0001235468-21-000173 | 10-K | XBRL Viewer

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Cover Page - USD ($) $ in Millions	12 Months Ended
Cover Page - USD ($) $ in Millions	Sep. 30, 2021	Dec. 06, 2021	Mar. 31, 2021
Cover [Abstract]
Entity Central Index Key	0001235468
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--09-30
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	0-51813
Entity Registrant Name	LIQUIDITY SERVICES, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	52-2209244
Entity Address, Address Line One	6931 Arlington Road, Suite 200
Entity Address, City or Town	Bethesda
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20814
City Area Code	202
Local Phone Number	467-6868
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	LQDT
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 460.3
Entity Common Stock, Shares Outstanding		35,491,056
Documents Incorporated by Reference	Portions of the registrant's Proxy Statement relating to its 2022 Annual Stockholders' Meeting, to be filed subsequently, are incorporated by reference into Part III (Items 10, 11, 12, 13 and 14) of this Form 10-K.

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Current assets:
Cash and cash equivalents	$ 106,335	$ 76,036
Accounts receivable, net of allowance for doubtful accounts of $490 and $389	5,866	5,322
Inventory, net	12,468	5,607
Prepaid taxes and tax refund receivable	1,713	1,652
Prepaid expenses and other current assets	5,460	5,962
Total current assets	131,842	94,579
Property and equipment, net	17,634	17,843
Operating lease assets	13,478	10,561
Intangible assets, net	3,453	4,758
Goodwill	59,872	59,839
Deferred tax assets	23,822	806
Other assets	5,475	8,248
Total assets	255,576	196,634
Current liabilities:
Accounts payable	40,611	21,957
Accrued expenses and other current liabilities	25,975	19,124
Current portion of operating lease liabilities	4,250	3,818
Deferred revenue	4,624	3,255
Payables to sellers	33,713	26,170
Total current liabilities	109,173	74,324
Operating lease liabilities	10,098	7,499
Deferred taxes and other long-term liabilities	1,290	2,996
Total liabilities	120,561	84,819
Commitments and contingencies (Note 15)
Stockholders' equity:
Common stock, $0.001 par value; 120,000,000 shares authorized; 35,457,095 shares issued and outstanding at September 30, 2021; 34,082,406 shares issued and outstanding at September 30, 2020	35	34
Additional paid-in capital	252,017	247,892
Treasury stock, at cost; 2,222,083 shares at September 30, 2021 and 547,508 shares at September 30, 2020	(36,628)	(3,983)
Accumulated other comprehensive loss	(9,011)	(9,782)
Accumulated deficit	(71,398)	(122,346)
Total stockholders' equity	135,015	111,815
Total liabilities and stockholders' equity	$ 255,576	$ 196,634

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 490	$ 389
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	35,457,095	34,082,406
Common stock, shares outstanding (in shares)	35,457,095	34,082,406
Treasury stock (in shares)	2,222,083	547,508

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Total revenue	$ 257,531	$ 205,940	$ 226,525
Costs and expenses from operations:
Cost of goods sold (excludes depreciation and amortization)	107,678	96,016	102,414
Seller distributions	0	0	10,831
Technology and operations	47,673	42,158	51,594
Sales and marketing	37,635	35,629	36,703
General and administrative	28,938	29,166	34,249
Depreciation and amortization	6,969	6,290	5,091
Acquisition costs and impairment of goodwill and long-lived assets	1,464	5	102
Other operating expenses	6	573	5,049
Total costs and expenses	230,363	209,837	246,033
Income (loss) from operations	27,168	(3,897)	(19,508)
Interest and other income, net	(411)	(924)	(1,448)
Income (loss) before income taxes	27,579	(2,973)	(18,060)
(Benefit) provision for income taxes	(23,370)	801	1,200
Net income (loss)	$ 50,949	$ (3,774)	$ (19,260)
Basic income (loss) per common share (in dollars per share)	$ 1.53	$ (0.11)	$ (0.58)
Diluted income (loss) per common share (in usd per share)	$ 1.45	$ (0.11)	$ (0.58)
Basic weighted average shares outstanding	33,333,557	33,612,263	33,062,976
Diluted weighted average shares outstanding	35,024,108	33,612,263	33,062,976
Revenue
Total revenue	$ 146,151	$ 127,580	$ 147,889
Fee revenue
Total revenue	$ 111,380	$ 78,360	$ 78,636

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 50,949	$ (3,774)	$ (19,260)
Other comprehensive (loss) income:
Defined benefit pension plan—unrecognized amounts, net of taxes	170	(2,293)	(540)
Foreign currency translation, net of taxes	601	484	(984)
Other comprehensive income (loss), net of taxes	771	(1,809)	(1,524)
Comprehensive income (loss)	$ 51,720	$ (5,583)	$ (20,784)

- Definition

Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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+ Details

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
Balance (in shares) at Sep. 30, 2018			32,774,118			0
Balance at Sep. 30, 2018	$ 129,654	$ 730	$ 33	$ 236,115	$ 0	$ 0	$ (6,449)	$ (100,045)	$ 730
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(19,260)							(19,260)
Exercise of common stock options, grants of restricted stock awards, and vesting of restricted stock units (in shares)			953,066
Exercise of common stock options, grants of restricted stock awards, and vesting of restricted stock units	590		$ 1	589
Tax settlements associated with stock compensation expense (in shares)			(6,906)
Taxes paid associated with net settlement of stock compensation awards	(44)			(44)
Forfeiture of restricted stock awards (in shares)			(33,163)
Stock compensation expense	6,026			6,026
Defined benefit pension plan—unrecognized amounts, net of taxes	(540)						(540)
Foreign currency translation and other	(981)						(984)	3
Balance (in shares) at Sep. 30, 2019			33,687,115			0
Balance at Sep. 30, 2019	116,175		$ 34	242,686		$ 0	(7,973)	(118,572)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(3,774)							(3,774)
Exercise of common stock options, grants of restricted stock awards, and vesting of restricted stock units (in shares)			494,683
Exercise of common stock options, grants of restricted stock awards, and vesting of restricted stock units	111			111
Tax settlements associated with stock compensation expense (in shares)			(84,392)
Taxes paid associated with net settlement of stock compensation awards	(594)			(594)
Forfeiture of restricted stock awards (in shares)			(15,000)
Common stock repurchases (in shares)						(547,508)
Common stock repurchases	(3,983)					$ (3,983)
Stock compensation expense	5,689			5,689
Defined benefit pension plan—unrecognized amounts, net of taxes	(2,293)						(2,293)
Foreign currency translation and other	484						484
Balance (in shares) at Sep. 30, 2020			34,082,406			(547,508)
Balance at Sep. 30, 2020	$ 111,815		$ 34	247,892		$ (3,983)	(9,782)	(122,346)
Increase (Decrease) in Stockholders' Equity
Accounting Standards Update	us-gaap:AccountingStandardsUpdate201602Member
Net income (loss)	$ 50,949							50,949
Exercise of common stock options, grants of restricted stock awards, and vesting of restricted stock units (in shares)			1,605,618
Exercise of common stock options, grants of restricted stock awards, and vesting of restricted stock units	445		$ 1	444
Tax settlements associated with stock compensation expense (in shares)			(217,196)
Taxes paid associated with net settlement of stock compensation awards	(3,915)			(3,915)
Forfeiture of restricted stock awards (in shares)			(13,733)
Common stock repurchases (in shares)						(1,591,963)
Common stock repurchases	$ (31,143)					$ (31,143)
Common stock surrendered in the exercise of stock options (in shares)	(82,612)					(82,612)
Common stock surrendered in the exercise of stock options	$ 0			1,502		$ (1,502)
Stock compensation expense	6,094			6,094
Defined benefit pension plan—unrecognized amounts, net of taxes	170						170
Foreign currency translation and other	600						601	(1)
Balance (in shares) at Sep. 30, 2021			35,457,095			(2,222,083)
Balance at Sep. 30, 2021	$ 135,015		$ 35	$ 252,017		$ (36,628)	$ (9,011)	$ (71,398)

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Operating activities
Net income (loss)	$ 50,949	$ (3,774)	$ (19,260)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	6,969	6,290	5,091
Change in fair value of earn-out liability	0	200	3,500
Stock compensation expense	6,947	5,660	6,508
Inventory adjustment to net realizable value	174	300	331
Provision for doubtful accounts	297	200	178
Deferred tax (benefit) expense	(24,510)	106	136
Impairment of long-lived and other non-current assets	1,338	0	0
Loss (gain) on disposal of property and equipment	80	(29)	(15)
Gain on disposal of lease assets	(23)	0	0
Changes in operating assets and liabilities:
Accounts receivable	(843)	1,182	(2,012)
Inventory	(7,035)	(64)	3,948
Prepaid taxes and tax refund receivable	(61)	878	(811)
Prepaid expenses and other assets	(2,022)	1,375	1,554
Operating lease assets and liabilities	(79)	(187)	0
Accounts payable	18,554	6,907	1,191
Accrued expenses and other current liabilities	6,060	(8,198)	1,999
Distributions payable	0	(1,675)	(453)
Deferred revenue	1,369	207	906
Payables to sellers	7,543	5,917	(8,716)
Other liabilities	(290)	1,183	(317)
Net cash provided by (used in) operating activities	65,417	16,478	(6,242)
Investing activities
Increase in intangibles	(33)	(62)	(23)
Purchases of property and equipment, including capitalized software	(5,419)	(4,186)	(5,938)
Proceeds from note receivable	4,343	2,824	0
Proceeds from sale of property and equipment	105	71	247
Purchase of short-term investments	0	(25,000)	(70,000)
Maturities of short-term investments	0	55,000	60,000
Net cash (used in) provided by investing activities	(1,004)	28,647	(15,714)
Financing activities
Payments of the principal portion of finance lease liabilities	(42)	(34)	0
Proceeds from exercise of common stock options (net of tax)	445	111	590
Taxes paid associated with net settlement of stock compensation awards	(3,915)	(594)	(44)
Payment of earn-out liability related to business acquisition	0	(1,200)	0
Common stock repurchases	(31,143)	(3,983)	0
Net cash (used in) provided by financing activities	(34,655)	(5,700)	546
Effect of exchange rate differences on cash and cash equivalents	541	114	(541)
Net increase (decrease) in cash and cash equivalents	30,299	39,539	(21,951)
Cash and cash equivalents at beginning of year	76,036	36,497	58,448
Cash and cash equivalents at end of year	106,335	76,036	36,497
Supplemental disclosure of cash flow information
Cash paid (received for) for income taxes, net of refunds	1,442	(1,519)	1,008
Non-cash: Common stock surrendered in the exercise of stock options	$ 1,502	$ 0	$ 0

Organization	12 Months Ended
Organization	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Liquidity Services, Inc. (the Company) is a leading global commerce company providing trusted marketplace platforms that power the circular economy. We create a better future for organizations, individuals, and the planet by capturing and unleashing the intrinsic value of surplus. We connect millions of buyers and thousands of sellers through our leading auction marketplaces, search engines, asset management software, and related services. Our comprehensive solutions enable the transparent, efficient, sustainable recovery of value from excess items owned by business and government sellers. We believe our ability to create liquid marketplaces for surplus and idle assets generates a continuous flow of goods from our sellers. This valuable and reliable flow of goods, in turn, attracts an increasing number of buyers to our marketplaces. Increasing numbers of buyers to our marketplaces, in turn, attracts more sellers to our marketplaces which, in turn, reinforces a valuable and reliable flow of surplus assets. Results from our operations are organized into four reportable segments: Retail Supply Chain Group (RSCG), Capital Assets Group (CAG), GovDeals, and Machinio. See Note 16 to the Consolidated Financial Statements for Segment Information. We were incorporated in Delaware in November 1999 as Liquidation.com, Inc. and commenced operations in early 2000. On November 1, 2021, we acquired Bid4Assets. Inc. (Bid4Assets), a Maryland corporation based in Silver Spring, MD. Bid4Assets auctions distressed real estate for the federal government, sheriffs, county-tax collectors, financial institutions, and real estate funds. See Note 17 - Subsequent Events for more information regarding this transaction. The Company's operations are subject to certain risks and uncertainties, many of which are associated with technology-oriented companies, including, but not limited to, the Company's dependence on use of the Internet; the effect of general business and economic trends, including the extent and duration of the COVID-19 pandemic; the Company's susceptibility to rapid technological change; actual and potential competition by entities with greater financial and other resources; and the potential for the commercial sellers from which the Company derives a significant portion of its inventory to change the way they conduct their disposition of surplus assets or to otherwise terminate or not renew their contracts with the Company.

Summary of Significant Accounting Policies

12 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect amounts in the consolidated financial statements and accompanying notes. For the year ended September 30, 2021, these estimates required the Company to make assumptions about the extent and duration of restrictions on cross-border transactions and the impact of the COVID-19 pandemic on macroeconomic conditions and, in turn, the Company's results of operations. As there remains uncertainty associated with the Pandemic, the Company will continue to update its assumptions as conditions change. Actual results could differ significantly from those estimates.

Principles of Consolidation and Basis of Presentation

The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). In addition, in the opinion of management, all adjustments (consisting of normal, recurring accruals) considered necessary for a fair presentation of the results for the periods presented have been included.

Business Combinations

The Company recognizes all of the assets acquired, liabilities assumed, contractual contingencies, and contingent consideration at their fair value on the acquisition date. Acquisition-related costs are recognized separately from the acquisition and expensed as incurred. Restructuring costs incurred in periods subsequent to the acquisition date are expensed when incurred. Subsequent changes to the purchase price (i.e., working capital adjustments) or other fair value adjustments determined during the measurement period are recorded as an adjustment to goodwill, with the exception of contingent consideration, which is recognized in the statement of operations in the period it is modified. All subsequent changes to a valuation allowance or uncertain tax position that relate to the acquired company and existed at the acquisition date that occur both within the measurement period and as a result of facts and circumstances that existed at the acquisition date are recognized as an adjustment to goodwill. All other changes in valuation allowances are recognized as a reduction or increase to income tax expense or as a direct adjustment to additional paid-in capital as required.

Cash and Cash Equivalents

The Company considers all highly liquid securities purchased with an initial maturity of three months or less to be cash equivalents.

Accounts Receivable

Accounts receivable are recorded at the invoiced amount and are non-interest bearing. The Company maintains an allowance for doubtful accounts to reserve for potentially uncollectible receivables. Allowances are based on management’s judgment, which considers historical bad debt experience, a specific review of all significant outstanding invoices, and an assessment of general economic conditions.

Inventory

Inventory consists of property obtained for resale, generally through the online auction process, and is stated at the lower of cost or net realizable value. Cost is generally determined using the specific identification method. Costs associated with our warehouse operations are expensed as incurred and included within Technology and operations expenses in the Statements of Operations. Charges for unsellable inventory, as well as for inventory written down to net realizable value, are included in Cost of goods sold in the period in which they have been determined to occur. As of September 30, 2021 and September 30, 2020, the Company's inventory reflects write-downs of $0.2 million and $0.3 million, respectively.

Prepaid expenses and other current assets

Prepaid expenses and other current assets include the short-term portion of a promissory note (described in "Other Assets"), as well as other miscellaneous prepaid expenses.

Other Assets

On September 30, 2015, the Company sold certain assets related to its Jacobs Trading business to Tanager Acquisitions, LLC ("Tanager"). In connection with the disposition, Tanager assumed certain liabilities related to the Jacobs Trading business. Tanager issued a $12.3 million five-year interest-bearing promissory note to the Company.

On October 10, 2019, the Company entered into a Forbearance Agreement and Amendment to Note, Security Agreement and Guaranty Agreement (the "Forbearance Agreement") with Tanager (now known as Jacobs Trading, LLC) and certain of its affiliates (collectively, "JTC"). In exchange for additional collateral, security, and a higher interest rate, the Company granted JTC a new repayment schedule that requires quarterly payments to be made from August 2020 to August 2023. Upon execution of the Forbearance Agreement, JTC repaid $2.5 million in principal, plus $0.4 million of accrued interest. As of March 31, 2021, JTC had repaid $7.7 million of the $12.3 million owed to the Company and had an outstanding principal balance of $4.6 million.

On May 12, 2021, the Company entered into the First Amendment to the Forbearance Agreement with JTC, providing JTC with full satisfaction and discharge from its indebtedness upon receipt of a $3.5 million payment made on May 17, 2021. As a result, the Company recorded a $1.1 million loss as component of Other operating expenses in its Consolidated Statement of Operations during the year ended September 30, 2021, representing the difference between the $4.6 million outstanding balance of principal and accrued interest and the $3.5 million payment received.

Property and Equipment

Property and equipment are recorded at cost, and depreciated or amortized on a straight-line basis over the following estimated useful lives:


Computers and purchased software						One to five years
Office/operational equipment						Three to five years
Furniture and fixtures						Five to seven years
Internally developed software for internal-use						Five years
Leasehold improvements						Shorter of lease term or useful life
Buildings						Thirty-nine years
Vehicles						Five years
Land						Not depreciated

Leases

The Company determines if an arrangement is a lease upon inception. A contract is or contains a lease if the contract provides the right to control the use of an identified asset for a period of time.

Lease assets and liabilities are recognized at the lease commencement date at an amount equal to the present value of the lease payments to be made over the lease term. The lease payments represent the combination of lease and nonlease components. The discount rate used to determine the present value is the Company’s incremental borrowing rate for a duration that is consistent with the lease term, as the rates implicit in the Company’s leases are generally not determinable. The Company’s incremental borrowing rate is estimated using publicly available information for companies with comparable financial profiles, adjusted for the impact of collateralization. The lease term includes the impacts of options to extend or terminate the lease only if it is reasonably certain that the option will be exercised.

Lease expense related to operating lease assets and liabilities is recognized on a straight-line basis over the lease term. Lease expense related to finance lease assets is recognized on a straight-line basis over the shorter of the useful life of the asset or the lease term, while lease expense related to finance lease liabilities is recognized using the interest method. Lease-related payments not included in the determination of the lease assets and liabilities, such as variable lease payments, are expensed as incurred.

Lease assets and liabilities are not recognized when the lease term is 12 months or less, however, short-term lease expense is still recognized on a straight-line basis over the lease term.

Balances related to the Company's finance leases are included with Other assets (finance lease assets), Accrued expenses and other liabilities (current portion of finance lease liabilities), and Deferred taxes and other long-term liabilities (non-current portion of finance lease liabilities).

Lease assets are assessed for impairment in accordance with the Company’s accounting policy for the impairment of long-lived assets.

Intangible Assets

Intangible assets consist of contract intangibles, brand and technology, and patent and trademarks. Intangible assets are amortized using the straight-line method over their estimated useful lives.

Impairment of Long-Lived Assets

Long-lived assets, including definite-lived intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. If an impairment indicator is present, the Company evaluates recoverability by comparing the carrying amount of the assets to future undiscounted net cash flows expected to be generated by the assets. If the assets are impaired, the impairment recognized is measured by the amount by which the carrying amount exceeds the estimated fair value of the assets. The Company did not record impairment charges on material long-lived assets during the years ended September 30, 2021, 2020, and 2019.

Goodwill

Goodwill represents the costs in excess of the fair value of net assets acquired through acquisitions by the Company. The Company reviews goodwill for impairment annually on July 1, or more frequently if events or circumstances indicate impairment may exist. Examples of such events or circumstances could include a significant change in business climate or the loss of a significant contract.

In evaluating goodwill for impairment, the Company may first assess qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50 percent) that the fair value of a reporting unit is less than its carrying amount. If the Company concludes that it is not more likely than not that the fair value of the reporting unit is less than its carrying value, no further testing of goodwill assigned to the reporting unit is required. If the Company concludes that it is more likely than not that the fair value of a reporting unit is less than its carrying value, the Company applies a fair value-based test.

The Company generally tests its goodwill for impairment using a fair-value based test, where the Company determines the fair value of each of its reporting units and compares that amount to the carrying amount of the respective reporting units, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, no impairment loss is recognized. If, instead, the carrying value of the reporting unit exceeds its fair value, an impairment loss is recognized in the amount of the excess carrying value.

Deferred Revenue

Deferred revenue is primarily derived from Machinio Advertising and System subscriptions that range from one to forty months. Subscription fees are recognized ratably over the term of the agreements.

Revenue Recognition

In the Consolidated Statements of Operations, revenue from the resale of inventory that the Company purchases from sellers is recognized within Revenue. Revenue from the sale of inventory that the Company sells on a consignment basis, and other non-consignment fee revenue, which includes Machinio's sales listing subscription service as well as other services including returns management and refurbishment of assets, is recognized within Fee Revenue.

The Company adopted the Financial Accounting Standard Board's (FASB) Accounting Standards Codification (ASC) Topic 606, Revenue from Contracts with Customers (ASC 606) effective October 1, 2018.

The Company recognizes revenue when or as performance obligations are satisfied and control is transferred to the customer. Revenue is recognized in the amount that reflects the consideration to which the Company expects to be entitled.

Revenue is also evaluated to determine whether the Company should report the gross proceeds as revenue, when the Company acts as the principal in the arrangement, or the Company should report its revenue on a net basis, when the Company acts as an agent. Specifically, when other parties are involved in providing goods or services to a customer, the Company must determine whether the nature of its promise is a performance obligation to provide the specified goods or services itself, or to arrange for another party to provide them. The Company evaluates the following factors to determine if it is acting as a principal: (1) whether the Company is primarily responsible for fulfilling the promise to provide the asset or assets; (2) whether the Company has inventory risk of the asset or assets before they are transferred to the buyer; and (3) whether the Company has discretion in establishing the price for the asset or assets.

The Company enters into contracts with buyers and sellers. The Company has master agreements with some sellers pertaining to the sale of a flow of surplus assets over the term of the master agreement; however, a revenue contract for accounting purposes exists when the Company agrees to sell a specific asset or assets. When acting as a principal (a “purchase” arrangement), the Company purchases an asset or assets from a seller and then the Company seeks to sell the asset or assets to a buyer. The Company recognizes as Revenue the gross proceeds from the sale, including buyer's premiums. In purchase arrangements, the contract with the seller is not a revenue contract in the scope of the revenue recognition guidance; rather, it is a purchase of inventory. When the Company is acting as an agent (a “consignment” arrangement), its performance obligation is to arrange for the seller to sell an asset or assets to the buyer directly. The Company recognizes Fee Revenue based on the sales commissions that are paid to the Company by the sellers for utilizing the Company's services; in this situation, sales commissions represent a percentage of the gross proceeds from the sale that the seller pays to the Company upon completion of the transaction.

In both purchase and consignment contracts, the Company sometimes provides distinct services to the seller, such as returns management, refurbishment of assets, or valuation services. These services are distinct because the seller could benefit from the services separately from the asset sale, and as such they are treated as separate performance obligations. Some services provided to sellers are not distinct, like providing access to the Company’s e-commerce marketplaces or promoting the asset or assets for sale, because they could not benefit the seller separately from the sale of the asset or assets.

The consideration received from buyers and sellers includes (1) buyer’s premiums, (2) seller’s commissions, and (3) fees for services, including reimbursed expenses. Consideration is variable based on units, final auction prices, or other factors, until the buyer’s purchase of the asset or assets is complete, or the service has been provided. Recognition of variable consideration that is based on the results of auctions or purchases by buyers is constrained until those transactions have been finalized. The Company estimates and recognizes amounts related to sales returns, discounts or rebates promised to customers, and reimbursed expenses, however, those estimates are not significant relative to the Company's consolidated revenues. The total transaction price is allocated to each distinct performance obligation and revenue is recognized when or as the performance obligation is satisfied. Variable consideration is allocated to individual performance obligations when the variable consideration is related to satisfying that performance obligation and consistent with the allocation objective. The Company's revenue is generally recorded subsequent to receipt of payment authorization, utilizing credit cards, wire transfers and PayPal, an Internet-based payment system, as methods of payments. Goods are generally not shipped before payment is received. For certain transactions, payment is due upon invoice and the payment terms vary depending on the business segment.

The Company collects and remits sales taxes on merchandise that it purchases and sells and has elected the practical expedient to report such amounts under the net method in its Consolidated Statements of Operations. The Company also provides shipping and handling services in some arrangements and has elected the practical expedient to treat those activities as a fulfillment cost. If the Company is acting as a principal for the combined obligation, amounts received from customers for shipping are recognized as Revenue, and amounts paid for shipping are recognized as costs of goods sold. If the Company is acting as an agent for the combined obligation, shipping revenue and costs will be netted and recognized within costs of goods sold.

The Company’s performance obligations are satisfied when control of the asset is transferred to the buyer or when the service is completed. The Company determines when control has transferred by evaluating the following five indicators: (1) whether the Company has a present right to payment for the asset or assets; (2) whether the buyer has legal title to the asset; (3) whether the buyer has physical possession of the asset or assets; (4) whether the buyer has the significant risks and rewards of ownership; and (5) whether the buyer has accepted the asset or assets.

For the Company's Machinio business segment, the performance obligation is satisfied over time as the Company provides the services over the term of the subscription. At September 30, 2021, the Machinio business segment had a remaining performance obligation of $4.6 million; the Company expects to recognize the substantial majority of that amount as Fee Revenue over the next 12 months.

Cost of Goods Sold

Cost of goods sold includes the costs of purchasing inventory, transporting property for auction, shipping and handling costs, and credit card transaction fees. For transactions where the Company resells inventory that was purchased from sellers, the cost of goods sold includes the cost of that inventory, generally using specific identification. There are no inventory costs associated with consignment sales.

Contract Assets and Liabilities

Contract assets reflect an estimate of expenses that will be reimbursed upon settlement with a seller. The contract asset balance was $0.4 million as of September 30, 2020 and $0.6 million as of September 30, 2021 and is included in the line item Prepaid expenses and other current assets on the consolidated balance sheets.

Contract liabilities reflect obligations to provide services for which the Company has already received consideration, and generally arise from up-front payments received in connection with Machinio's subscription services. The contract liability balance was $3.3 million as of September 30, 2020, and $4.6 million as of September 30, 2021 and is included in the line item Deferred revenue on the consolidated balance sheets. Of the September 30, 2020 contract liability balance, $3.2 million was earned as Fee Revenue during the year ended September 30, 2021.

Contract Costs

Contract costs relate to sales commissions paid on subscription contracts that are capitalized within our Machinio segment. Contract costs are amortized over the expected life of the customer contract. The contract cost balance was $1.6 million as of September 30, 2021 and $0.7 million as of September 30, 2020 and is included in the line item Prepaid expenses and other current assets and Other assets on the consolidated balance sheet. Amortization expense was $0.7 million during the year ended September 30, 2021 and was $0.4 million during the year ended September 30, 2020.

Risk Associated with Certain Concentrations

For the majority of buyers that receive goods before payment to the Company is made, credit evaluations are performed. However, for the remaining buyers, goods are not shipped before payment is made, and as a result the Company is not subject to significant collection risk from those buyers.

For consignment sales transactions, funds are typically collected from buyers and are held by the Company on the sellers' behalf. The funds are included in Cash and cash equivalents in the consolidated financial statements. The Company releases the funds to the seller, less the Company's commission and other fees due, after the buyer has accepted the goods or within 30 days, depending on the state where the buyer and seller conduct business. The amount of cash held on behalf of the sellers is recorded as Payables to sellers in the accompanying Consolidated Balance Sheets.

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash in banks and cash equivalent money market funds in accounts which may at times exceed federally insured limits (FDIC and/or SIPC), and Accounts receivable. The Company deposits its cash and acquires cash equivalent money market funds with financial institutions that the Company considers to be of high credit quality.

Additionally, the Company has multiple vendor contracts with Amazon.com, Inc. under which it acquires and sells commercial merchandise. The property purchased under this contract represented 60.7%, 55.1%, and 43.6% of cost of goods sold for the years ended September 30, 2021, 2020, and 2019, respectively. This contract is included within the RSCG segment.

Income Taxes

The Company accounts for income taxes using an asset and liability approach for measuring deferred taxes based on temporary differences between the financial statement and income tax bases of assets and liabilities existing at each balance sheet date using enacted tax rates for the years in which the taxes are expected to be paid or recovered. The Company recognizes deferred tax assets to the extent that it believes that these assets are more likely than not to be realized. In making such determination, the Company considers all available positive and negative evidence to estimate whether future taxable income will be generated to permit use of the existing deferred tax asset. The resulting net tax asset reflects management's estimate of the amount that will be realized.

The Company applies the authoritative guidance related to uncertainty in income taxes. Accounting Standards Codification (ASC) 740 states that a benefit from an uncertain tax position may be recognized when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of technical merits. The Company’s policy is to recognize interest and penalties in the period in which they occur in the income tax provision. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, various state and local jurisdictions and in foreign jurisdictions including, among others, Canada and the U.K.

Stock-Based Compensation

The Company has incentive plans under which stock options, restricted stock units, restricted stock awards, and stock appreciation rights are issued. The awards issued can contain service conditions, performance conditions based upon Company financial results, and/or market conditions based upon changes in the Company's stock price.

Service- and performance-based stock awards are measured at fair value on their grant date. Stock options and stock appreciation rights are measured at fair value using the Black-Scholes option-pricing model. However, because the stock appreciation rights are cash settled, they are also measured at fair value in each reporting period. The Black-Scholes option-pricing model includes assumptions for the expected term, volatility, and dividend yield, each of which are determined in reference to the Company's historical results. Where applicable, the expected term assumption is derived separately for homogenous groups within overall award population. Restricted stock units and restricted stock awards are measured at fair value using the closing price of the Company's stock on the grant date. For service-based stock awards, the Company recognizes expense on a straight-line basis over the service period, which is generally a period one to four years. For performance-based stock awards, the Company recognizes expense on a straight-line basis over the derived service period expected to be required to achieve the performance condition. The Company records a cumulative adjustment to compensation

expense for performance-based awards if there is a change in determination of whether it is probable that the performance condition will be achieved.

Market-based stock awards are measured at fair value on their grant date using a Monte Carlo simulation. The Monte Carlo simulation includes assumptions for the expected term, volatility, and dividend yield, each of which are determined in reference to the Company's historical results. For market-based stock option and restricted stock awards, the Company recognizes expense on a straight-line basis over the derived service period determined by the Monte Carlo simulation, for each stock price target within the award. The Company accelerates expense when a stock price target is achieved prior to the derived service period. The Company, however, does not reverse expense recognized if the stock price target(s) are not ultimately achieved, as required by equity accounting for market-based awards. For market-based stock appreciation rights, because they are cash settled, they are measured at fair value in each reporting period. The Company recognized expense on a straight-line basis over the derived service period determined by the Monte Carlo simulation in each reporting period, for each stock price target within the award. The Company accelerates expense when a stock price target is achieved prior to the derived service period, and reverses expense recognized if the stock price target(s) are not ultimately achieved, as required by liability accounting for market-based awards.

The Company recognizes the impact of forfeitures in the period they occur.

Compensation expense from the stock awards is included in the same lines on the consolidated statements of operations as the cash compensation to the employees receiving the stock awards.

Excess tax benefits realized from stock awards are reported as cash flows from operating activities on the consolidated statement of cash flows.

Advertising Costs

Advertising expenditures are expensed as incurred. Advertising costs charged to expense were $3.2 million, $2.6 million and $2.7 million for the years ended September 30, 2021, 2020, and 2019, respectively.

Treasury Stock

Treasury stock is presented at cost, including any applicable commissions and fees, as a reduction of stockholders’ equity in the consolidated balance sheets and statements of equity. Treasury stock held by us may be retired or reissued in the future.

Foreign Currency Translation

The functional currency of the Company's foreign subsidiaries is primarily the local currency. The translation of the subsidiary's financial statements into U.S. dollars is performed for balance sheet accounts using exchange rates in effect at the balance sheet date and for revenue and expense accounts using an average exchange rate during the period. The resulting translation adjustments are recognized in Accumulated other comprehensive loss, a separate component of stockholders' equity. Realized and unrealized foreign currency transaction gains and losses are included in Interest and other income, net in the Consolidated Statements of Operations.

Accumulated Other Comprehensive Loss

The following table shows the changes in accumulated other comprehensive income (loss), net of taxes (in thousands):


	Foreign Currency Translation Adjustments		Net Change Pension and Other Postretirement Benefit Plans		Accumulated Other Comprehensive Loss
Balance at September 30, 2018	$	(7,585)	$	1,136	$	(6,449)
Current-period other comprehensive (loss) income	(984)		(540)		(1,524)
Balance at September 30, 2019	(8,569)		596		(7,973)
Current-period other comprehensive (loss) income	484		(2,293)		(1,809)
Balance at September 30, 2020	(8,085)		(1,697)		(9,782)
Current-period other comprehensive (loss) income	601		170		771
Balance at September 30, 2021	$	(7,484)	$	(1,527)	$	(9,011)

Net Income (Loss) Per Share (EPS)

See discussion of our Net income (loss) per share (EPS) determination and related calculations below at Note 3 Earnings Per Share.

Recent Accounting Pronouncements

Accounting Standards Adopted

On October 1, 2020, the Company adopted ASU 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. This accounting standard has not had a material impact on the Company's consolidated financial statements as no significant implementations of cloud computing arrangements have occurred since adoption.

Accounting Standards Not Yet Adopted

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments (Topic 326), or ASC 326. ASC 326, including all amendments and related guidance, was designed to provide financial statement users with more useful information about the expected credit losses on financial instruments and other commitments to extend credit. ASC 326 will require estimation of expected credit losses using a methodology that takes into consideration a broad range of reasonable and supportable information. The guidance will be effective for the Company beginning on October 1, 2023 and will be applied on a modified-retrospective basis, with any cumulative-effect adjustment recorded to retained earnings on the adoption date. The Company is in the process of evaluating the impact ASC 326 will have on its consolidated financial statements and expects to estimate credit losses on its financial assets such as its Accounts receivable and money market funds. While the Company has not experienced significant credit losses historically, the materiality of the impact of adoption will depend on events and conditions as of the date of adoption, which cannot be determined conclusively at this time.

In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes. ASU 2019-12 seeks to improve the consistent application of, and simplify the guidance for, the accounting for income taxes. The ASU removes certain exceptions to the general principals in ASC 740, Income Taxes, and clarifies and amends other existing guidance. The ASU will become effective for the Company beginning October 1, 2021. The Company does not expect the adoption of this ASU will have a material impact on its consolidated financial statements.

Earnings Per Share

12 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share

The Company calculates basic EPS by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period, excluding unvested restricted stock awards.

The Company calculates diluted net income (loss) per share by dividing net income (loss) by the weighted-average number of common shares and potentially dilutive common shares outstanding during the reporting period using the treasury stock method.

The Company's potentially dilutive common shares include stock options, restricted stock units, and restricted stock awards. For such awards that have performance- or market-conditions, they are considered dilutive only when those performance- or market-conditions have been satisfied as of the reporting date. However, in periods of a net loss, the Company's diluted EPS will equal its basic EPS, as all its potential common shares are anti-dilutive in that case. In periods of net income, the calculation of diluted net income per share will exclude all anti-dilutive common shares.

The computation of basic and diluted net income per share is as follows:


	Year Ended September 30,
	2021		2020		2019
Numerator:
Net income (loss)	$	50,949	$	(3,774)	$	(19,260)
Denominator:
Basic weighted average shares outstanding	33,333,557		33,612,263		33,062,976
Dilutive impact of stock options, RSUs and RSAs	1,690,551		—		—
Diluted weighted average shares outstanding	35,024,108		33,612,263		33,062,976
Basic income (loss) per common share	$	1.53	$	(0.11)	$	(0.58)
Diluted income (loss) per common share	$	1.45	$	(0.11)	$	(0.58)
Stock options, RSUs and RSAs excluded from income (loss) per diluted share because their effect would have been anti-dilutive	420,454		3,526,055		4,621,199

DoD Contracts with DLA Disposition Services	12 Months Ended
DoD Contracts with DLA Disposition Services	Sep. 30, 2021
Contractors [Abstract]
DoD Contract with DLA Disposition Services	DoD Contract with DLA Disposition ServicesDuring the year ended September 30, 2019, the Company had a material vendor contract with the Department of Defense (DoD), the Scrap Contract, which concluded on September 30, 2019. Under the Scrap Contract, the Company was the remarketer of all DoD non-electronic scrap turned into the Defense Logistics Agency (DLA) available for sale within the United States, Puerto Rico, and Guam. The Company paid a revenue-sharing payment to the DLA under this contract equal to 64.5% of the gross resale proceeds of the scrap property, and the Company bore all of the costs for the sorting, merchandising and sale of the property. Revenue from the Scrap Contract accounted for 7.4% of the Company's consolidated revenue for the year ended September 30, 2019.

- Definition

The entire disclosure for long-term contracts or programs.

+ References

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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Property and Equipment

12 Months Ended

Sep. 30, 2021

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment, including equipment under capital lease obligations, consists of the following:


	September 30,
	2021		2020
	(in thousands)
Computers and purchased software	$	1,981	$	2,060
Internally developed software for internal-use	18,942		13,860
Office/Operational equipment	6,373		5,781
Leasehold improvements	3,244		3,451
Building	2,158		2,151
Furniture and fixtures	655		945
Vehicles	1,129		1,043
Land	754		754
Construction in progress	956		2,353
Total property and equipment	36,192		32,398
Less: Accumulated depreciation and amortization	(18,558)		(14,555)
Total property and equipment, net	$	17,634	$	17,843

Depreciation and amortization expense related to property and equipment for the years ended September 30, 2021, 2020 and 2019, was $5.6 million, $4.9 million and $3.7 million, respectively. Included in those amounts is amortization of internally developed software for internal-use of $3.9 million, $2.9 million and $1.2 million, respectively.

The Company did not record impairment charges on material property and equipment during the years ended September 30, 2021, 2020 and 2019.

Leases

12 Months Ended

Sep. 30, 2021

Leases [Abstract]

Leases

The Company has operating leases for its corporate offices, warehouses, vehicles and equipment. The operating leases have remaining terms of up to 5.3 years. Some of the leases have options to extend or terminate the leases. The exercise of such options is generally at the Company’s discretion. The lease agreements do not contain any significant residual value guarantees or restrictive covenants. The Company also subleases excess corporate office space. The Company's finance leases and related balances are not significant.

The components of lease expense are:


	September 30,
	2021		2020
	(in thousands)
Finance lease – lease asset amortization	$	54	$	69
Finance lease – interest on lease liabilities	22		23
Operating lease cost	5,139		5,264
Operating lease impairment expense	172		—
Short-term lease cost	242		125
Variable lease cost (1)	1,532		1,463
Sublease income	(184)		(258)
Total net lease cost	$	6,977	$	6,686

(1) Variable lease costs primarily relate to the Company's election to combine non-lease components such as common area maintenance, insurance and taxes related to its real estate leases. To a lesser extent, the Company's equipment leases have variable costs associated with usage and subsequent changes to costs based upon an index.

Maturities of lease liabilities are:


	September 30, 2021
(in thousands)	Operating Leases		Finance Leases
2022	$	4,882	$	78
2023	4,145		79
2024	3,076		59
2024	2,445		30
2025	1,441		30
Thereafter	212		12
Total lease payments (1)	$	16,201	$	288
Less: imputed interest (2)	(1,855)		(38)
Total lease liabilities	$	14,346	$	250

(1) The weighted average remaining lease term is 3.7 years for operating leases and 4.1 years for finance leases.

(2) The weighted average discount rate is 6.5% for operating leases and 6.7% for finance leases.

Additionally, the Company has approximately $1.9 million of future payment obligations related to an executed warehouse lease agreement that has not yet commenced as of September 30, 2021.

Supplemental disclosures of cash flow information related to leases are:


(in thousands)	Year Ended September 30,
	2021		2020
Cash paid for amounts included in operating lease liabilities	$	4,319	$	4,771
Cash paid for amounts included in finance lease liabilities	42		34
Non-cash: lease liabilities arising from new operating lease assets obtained (1)	3,349		12,190
Non-cash: lease liabilities arising from new finance lease assets obtained	137		10
Non-cash: adjustments to lease assets and liabilities	3,756		3,942

(1) Year ended September 30, 2020 amount includes $12.2 million of lease liabilities recognized upon the adoption of ASC 842 on October 1, 2019 (see Note 2).

Leases

The components of lease expense are:


	September 30,
	2021		2020
	(in thousands)
Finance lease – lease asset amortization	$	54	$	69
Finance lease – interest on lease liabilities	22		23
Operating lease cost	5,139		5,264
Operating lease impairment expense	172		—
Short-term lease cost	242		125
Variable lease cost (1)	1,532		1,463
Sublease income	(184)		(258)
Total net lease cost	$	6,977	$	6,686

Maturities of lease liabilities are:


	September 30, 2021
(in thousands)	Operating Leases		Finance Leases
2022	$	4,882	$	78
2023	4,145		79
2024	3,076		59
2024	2,445		30
2025	1,441		30
Thereafter	212		12
Total lease payments (1)	$	16,201	$	288
Less: imputed interest (2)	(1,855)		(38)
Total lease liabilities	$	14,346	$	250

(1) The weighted average remaining lease term is 3.7 years for operating leases and 4.1 years for finance leases.

(2) The weighted average discount rate is 6.5% for operating leases and 6.7% for finance leases.

Additionally, the Company has approximately $1.9 million of future payment obligations related to an executed warehouse lease agreement that has not yet commenced as of September 30, 2021.

Supplemental disclosures of cash flow information related to leases are:


(in thousands)	Year Ended September 30,
	2021		2020
Cash paid for amounts included in operating lease liabilities	$	4,319	$	4,771
Cash paid for amounts included in finance lease liabilities	42		34
Non-cash: lease liabilities arising from new operating lease assets obtained (1)	3,349		12,190
Non-cash: lease liabilities arising from new finance lease assets obtained	137		10
Non-cash: adjustments to lease assets and liabilities	3,756		3,942

(1) Year ended September 30, 2020 amount includes $12.2 million of lease liabilities recognized upon the adoption of ASC 842 on October 1, 2019 (see Note 2).

Goodwill

12 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

The carrying value and changes in the carrying value of goodwill attributable to each reportable segment were as follows:


Goodwill (in thousands)	CAG		GovDeals		Machinio		Total
Balance at September 30, 2018	$	21,530	$	23,731	$	14,558	$	59,819

Translation adjustments	(352)		—		—		(352)
Balance at September 30, 2019	$	21,178	$	23,731	$	14,558	$	59,467

Translation adjustments	372		—		—		372
Balance at September 30, 2020	$	21,550	$	23,731	$	14,558	$	59,839
Translation adjustments	33		—		—		33
Balance at September 30, 2021	$	21,583	$	23,731	$	14,558	$	59,872

Accumulated goodwill impairment losses as of September 30, 2021 and 2020 were $168.6 million.

Impairment Analysis

Goodwill is tested for impairment at the beginning of the fourth quarter and during interim periods whenever events or circumstances indicate that the carrying value may not be recoverable. Pursuant to ASC 350, Goodwill and Other, the Company may utilize the optional qualitative assessment for its reporting units. The qualitative assessment considers trends in macroeconomic conditions, industry and market conditions, cost factors, and overall performance of the reporting unit. After assessing the totality of these factors and trends, if it is determined that it is more likely than not that the fair value of the reporting unit exceeds its carrying value, then no further steps are required. If not however, then the Company will perform the quantitative impairment test.

As of July 1, 2021, the Company performed its annual impairment test using the optional qualitative assessment for each of our reporting units. For each of our reporting units, based upon the significance of positive indicators identified through our assessment of qualitative evidence, we concluded that it was more likely than not that the fair value of each reporting unit exceeded their carrying amounts. The Company did not record impairment charges on goodwill during the years ended September 30, 2021, 2020 and 2019.

Intangible Assets

12 Months Ended

Sep. 30, 2021

Finite-Lived Intangible Assets, Net [Abstract]

Intangible Assets

Intangible assets consist of the following:


			Balance as of September 30, 2021						Balance as of September 30, 2020
	Useful Life (in years)	Weighted average useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
			(in thousands)						(in thousands)
Contract intangibles	6	6.0	$	3,100	$	(1,679)	$	1,421	$	3,100	$	(1,162)	$	1,938
Brand and technology	5	5.0	2,700		(1,755)		945		2,700		(1,215)		1,485
Patent and trademarks	7 - 10	8.6	2,360		(1,273)		1,087		2,329		(994)		1,335
Total intangible assets, net			$	8,160	$	(4,707)	$	3,453	$	8,129	$	(3,371)	$	4,758

Future expected amortization of intangible assets at September 30, 2021, is as follows:


Year Ending September 30,	Amortization
	(in thousands)
2022	$	1,330
2023	1,187
2024	649
2025	287
2026	—
Thereafter	—
Total	$	3,453

Amortization expense related to intangible assets for the years ended September 30, 2021, 2020 and 2019 was $1.3 million, $1.3 million and $1.3 million, respectively. The Company did not record impairment charges on any intangible assets during the years ended September 30, 2021, 2020 and 2019.

The 401(k) Benefit Plan	12 Months Ended
The 401(k) Benefit Plan	Sep. 30, 2021
Retirement Benefits [Abstract]
401(k) Benefit Plan	401(k) Benefit PlanThe Company has a retirement plan (the Plan), which is intended to be a qualified plan under Section 401(k) of the Internal Revenue Code. The Plan is a defined contribution plan available to all eligible employees and allows participants to contribute up to the legal maximum of their eligible compensation, not to exceed the maximum tax-deferred amount allowed by the Internal Revenue Service. The Plan also allows the Company to make discretionary matching contributions. During the year ended September 30, 2020, the Company changed its employer contributions from a safe harbor matching program to be fully discretionary where employer contributions may be provided to participants based upon the Company's financial performance and metrics at the end of its fiscal and calendar years. For the years ended September 30, 2021, 2020, and 2019, the Company recorded expenses of $1.1 million, $0.9 million and $1.6 million, respectively, related to its contributions to the Plan.

Income Taxes

12 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

The components of the provision for income taxes of continuing operations are as follows:


	Year Ended September 30,
	2021		2020		2019
	(in thousands)
Current tax provision (benefit):
U.S. Federal	$	—	$	—	$	—
State	293		382		453
Foreign	847		313		611
	1,140		695		1,064
Deferred tax provision (benefit):
U.S. Federal	(23,315)		74		103
State	(1,252)		(27)		(31)
Foreign	57		59		64
	(24,510)		106		136
Total (benefit) provision	$	(23,370)	$	801	$	1,200

Deferred taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company's deferred tax assets and liabilities are as follows:


	September 30,
	2021		2020
	(in thousands)
Deferred tax assets:
Net operating losses—Foreign	$	13,593	$	12,709
Net operating losses—U.S.	31,456		35,126
Accrued vacation and bonus	678		571
Inventory capitalization	219		54
Allowance for doubtful accounts	96		65
Stock compensation expense	1,415		1,804
Operating lease assets	3,605		2,236

Depreciation	2,339		1,266
Other	897		893
Total deferred tax assets before valuation allowance	54,298		54,724
Less: valuation allowance	(13,813)		(41,788)
Net deferred tax assets	40,485		12,936
Deferred tax liabilities:
Amortization of intangibles	107		291
Amortization of goodwill	7,322		6,666

Capitalized costs	5,602		4,470
Operating lease liabilities	3,394		2,059
Pension liability	238		138
Total deferred tax liabilities	$	16,663	$	13,624
Net deferred taxes	$	23,822	$	(688)

The reconciliation of the U.S. federal statutory rate to the effective rate for continuing operations is as follows:


	Year Ended September 30,
	2021		2020		2019
U.S. statutory rate	21.0	%	21.0	%	21.0	%
Stock-based stock compensation expense	(14.1)	%	(14.9)	%	(2.0)	%
Nondeductible compensation expense	5.5	%	(6.0)	%	(0.6)	%
Other permanent items	0.1	%	(1.1)	%	(4.2)	%
State taxes	3.0	%	(13.2)	%	(0.4)	%
Net foreign rate differential	0.5	%	(0.8)	%	(0.6)	%
Unrecognized tax benefits	0.1	%	5.1	%	(1.5)	%
Change in valuation allowance	(98.9)	%	9.9	%	(22.5)	%

Write-down of deferred tax assets on share-based stock compensation	0.7	%	(12.3)	%	(7.9)	%
Write-down of deferred tax assets on net operating loss	(2.8)	%	(15.9)	%	10.6	%
Other	0.2	%	1.3	%	1.5	%
Effective rate	(84.7)	%	(26.9)	%	(6.6)	%

As of September 30, 2021 and 2020, the Company had federal and state deferred tax assets of $23.5 million and $27.7 million, respectively, related to available federal and state net operating loss (NOL) carryforwards, foreign tax credit carryforwards, and other U.S. deductible temporary differences. The federal and state NOL carryforwards expire beginning in 2035 and 2022, respectively. The Company's ability to use these various carryforwards to offset any taxable income generated in future taxable periods may be limited under Section 382 and other federal tax provisions. The foreign tax credit carryforwards expire beginning in 2023. At September 30, 2021 and 2020, the Company had deferred tax assets related to available foreign NOL carryforwards of $13.6 million and $12.7 million, respectively. All but $0.4 million of our foreign NOLs maintain an indefinite carry forward life. The NOLs with limited carryforward periods will expire beginning in 2022.

The Company evaluates the recoverability of its deferred tax assets on a jurisdictional basis by considering whether deferred tax assets will be realized on a more likely than not basis. To the extent a portion or all of the applicable deferred tax assets do not meet the more likely than not threshold, a valuation allowance is recorded. Consideration was given to the tax planning strategies and, when applicable, future taxable income as to how much of the relevant deferred tax asset could be realized on a more likely than not basis. The Company has recorded a valuation allowance of $13.8 million and $41.8 million against its gross deferred tax asset balance at September 30, 2021 and September 30, 2020, respectively. At each reporting date, the Company considers new evidence, both positive and negative, that could affect its view of the future realization of deferred tax assets. As of September 30, 2021, in part because in the current year we achieved three years of cumulative pre-tax income in the U.S. federal jurisdiction, the Company determined that there is sufficient positive evidence to conclude that it is more likely than not that additional deferred tax assets of $27.9 million are realizable. It therefore recorded a net valuation allowance release of $27.9 million for the year ended September 30, 2021.

On March 27, 2020, The Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted in response to the Pandemic. The CARES Act, among other things, accelerates the recovery of alternative minimum tax (AMT) credits into fiscal year 2020. During fiscal year 2020, the Company recovered its full AMT refund of $1.7 million. Prior to the CARES Act, the Company’s AMT credits were recoverable in fiscal years 2021 through 2023. The CARES Act also permits net operating loss (NOL) carryovers and carrybacks to offset 100% of taxable income for taxable years beginning before 2021. In addition, NOLs incurred in fiscal years 2019, 2020, and 2021 may be carried back to each of the five preceding taxable years to generate a refund of previously paid income taxes. The Company does not expect the NOL provisions of the CARES Act to result in a material cash benefit.

The Tax Act and Jobs Act of 2017 ("The Tax Act") subjects a U.S. shareholder to a minimum tax on "global intangible low-taxed income" ("GILTI") earned by certain foreign subsidiaries. The FASB Staff Q&A Topic 740 No. 5. Accounting for Global Intangible Low-Taxed Income states that an entity can make an accounting policy election to either recognize deferred taxes for temporary differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI resulting from those items in the year the tax is incurred. The Company has elected to recognize the resulting tax on GILTI as an expense in the period the tax is incurred.

On July 10, 2018, the Company acquired 100% of the stock of Machinio for $19.9 million. Under the acquisition method of accounting, the Company recorded a net deferred tax liability of $0.7 million comprised primarily of acquired intangibles netted

against NOLs and other deferred assets and recognized a $0.7 million tax benefit from a reduction to its valuation allowance. The total amount of acquired NOLs, which are subject to limitations under Section 382, were $1.4 million.

The Company has not recorded a provision for deferred U.S. tax expense on the undistributed earnings of foreign subsidiaries since the Company intends to indefinitely reinvest the earnings of these foreign subsidiaries outside the U.S. The amount of such undistributed foreign earnings was $6.9 million as of September 30, 2021. As of September 30, 2021, and 2020, $22.4 million and $19.5 million, respectively, of cash and cash equivalents was held overseas and not available to fund domestic operations without incurring taxes upon repatriation.

The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (in thousands):


	Year Ended September 30,
	2021		2020		2019
Beginning balance at October 1	$	123	$	273	$	—
Additions based on positions related to the current year	20		—		—
Additions for tax positions of prior years	—		—		273
Reductions for tax positions of prior years	—		(150)		—
Settlements	—		—		—
Balance at September 30	$	143	$	123	$	273

The Company applies the authoritative guidance related to uncertainty in income taxes. ASC 740 states that a benefit from an uncertain tax position may be recognized when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. During 2021, the Company recorded a charge of $0.1 million due to unrecognized tax benefits related to foreign operations.

The Company recognizes interest and penalties in the period in which they occur in the income tax provision. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, various state and local jurisdictions and in foreign jurisdictions, primarily Canada and the U.K. The Company has no open income tax examinations in the U.S. and the statute of limitations for years prior to 2018 is now closed. However, certain tax attribute carryforwards that were generated prior to fiscal year 2018 may be adjusted upon examination by tax authorities if they are utilized.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 270
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

Equity Transactions

12 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Equity Transactions

Stock Compensation Incentive Plans

The Company has several incentive plans under which stock options, restricted stock units (RSUs), restricted stock awards (RSAs), and cash-settled stock appreciation rights (SARs) have been issued, including the Third Amended and Restated 2006 Omnibus Long-Term Incentive Plan, as amended, and a plan and private placement issuances related to the Company’s acquisition of Machinio. As of September 30, 2021, the Company has reserved at total of 19,100,000 shares of its common stock for exercises of stock options, vesting of RSUs, and grants of RSAs under these plans. Vesting of RSUs and grants of RSAs count as 1.5x shares against the plan reserves. As of September 30, 2021, 1,993,244 shares of common stock remained available for use.

Stock Compensation Expense

The table below presents the components of share-based compensation expense (in thousands):


	Year Ended September 30,
	2021		2020		2019
Equity-classified awards:
Stock options	$	3,117	$	2,054	$	1,530
RSUs & RSAs	2,977		3,635		4,496
Liability-classified awards:
SARs	$	853	$	(29)	$	482
Total stock compensation expense:	$	6,947	$	5,660	$	6,508

The Company’s total liabilities for liability-classified stock compensation awards was $0.5 million and $0.1 million as of September 30, 2021 and 2020, the current portion of which was $0.3 million and $0.1 million, respectively.

Share-Based Award Activity

Stock Options

The table below presents stock option activity (aggregate intrinsic value in thousands):


	Stock Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding as of September 30, 2020	3,075,914	$	8.54	6.16	$	2,841
Granted	1,108,273	$	10.60		$	—
Exercised	(1,033,529)	$	6.59		$	15,036
Forfeited	(272,720)	$	7.82		$	2,547
Expired	(33,653)	$	15.35		$	108
Outstanding as of September 30, 2021	2,844,285	$	10.04	6.14	$	34,877
Vested and expected to vest as of September 30, 2021	2,810,202	$	9.94	6.10	$	34,775
Exercisable as of September 30, 2021	1,477,408	$	10.37	4.24	$	18,589

Of the 1,366,877 stock options not yet exercisable as of September 30, 2021, 853,553 can become exercisable by satisfying service conditions only, and 513,324 can become exercisable by satisfying service and performance or market conditions.

Stock options containing only service conditions generally vest over periods of one to four years and expire five to ten years from the date of grant. Stock compensation cost is expensed ratably over the entire service period. As of September 30, 2021, there was $2.7 million of unrecognized compensation cost related to stock options containing only service conditions, which is expected to be recognized over a weighted-average period of 2.8 years.

The range of assumptions used to determine the fair value of stock options using the Black-Scholes option-pricing model during the years ended September 30, 2021, 2020 and 2019 were as follows:


	Year ended September 30
	2021	2020	2019
Dividend yield	—	—	—
Expected volatility	51.0% - 55.9%	46.5% - 51.0%	47.8% - 53.7%
Risk-free interest rate	0.4% - 0.8%	0.5% - 1.5%	1.9% - 2.8%
Expected term	4.6- 7.6 years	4.6 - 7.4 years	4.2 - 7.1 years

The weighted-average grant date fair value of options granted during the year-ended September 30, 2021, 2020 and 2019 was $4.81, $2.66 and $2.70, respectively. The total intrinsic value of options exercised during 2021, 2020 and 2019 was $15.0 million, $0.1 million and $0.3 million, respectively. Stock options containing performance conditions are discussed separately in the section below.

RSUs & RSAs

The table below presents RSU & RSA activity (aggregate fair value in thousands):


	RSU & RSA	Weighted- Average Grant Date Fair Value		Weighted- Average Remaining Contractual Term (years)	Aggregate Fair Value
Outstanding as of September 30, 2020	1,545,285	$	6.84	1.85	$	11,528
Granted	330,545	$	14.08		$	4,653
Vested	(811,773)	$	6.78		$	13,780
Forfeited	(146,676)	$	8.98		$	2,688
Outstanding as of September 30, 2021	917,381	$	9.15	1.98	$	19,825
Expected to vest as of September 30, 2021	666,092	$	10.17	2.35	$	14,394

Of the outstanding RSUs & RSAs as of September 30, 2021, 463,300 can vest by satisfying service conditions only, and 454,081 can vest by satisfying service and performance or market conditions.

RSUs containing only service conditions vest ratably each year over periods of one to four years. Stock compensation cost is expensed ratably over the entire service period. As of September 30, 2021, there was $3.6 million of unrecognized compensation cost related to RSUs containing only service conditions, which is expected to be recognized over a weighted-average period of 2.9 years. RSUs and RSAs containing performance conditions and market conditions are discussed separately in the section below.

SARs

The table below presents SAR award activity (aggregate intrinsic value in thousands):


	SARs	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding as of September 30, 2020	160,810	$	8.45	1.00	$	96

Exercised	(45,084)	$	8.45		$	443
Forfeited	(73,681)	$	9.80		$	213
Outstanding as of September 30, 2021	42,045	$	6.11	1.26	$	652
Vested and expected to vest as of September 30, 2021	42,045	$	6.11	1.26	$	652
Exercisable as of September 30, 2021	12,045	$	6.11	1.26	$	187

The 30,000 SARs not yet exercisable as of September 30, 2021 can become exercisable by satisfying service conditions only.

As of September 30, 2021, there was $0.3 million of unrecognized compensation cost related to SARs containing service conditions, which is expected to be recognized over a weighted-average period of 1.3 years. The Company made cash payments of $0.4 million, $0.6 million and $0.5 million to settle SARs exercised during the years ended September 30, 2021, 2020 and 2019, respectively.

The fair value of outstanding SARs containing only service conditions is estimated using the Black-Scholes option-pricing model. The range of assumptions used to determine the fair value of outstanding SARs as of September 30, 2021, 2020 and 2019 were as follows:


	Year ended September 30
	2021	2020	2019
Dividend yield	—	—	—
Expected volatility	78.3% - 78.3%	55.0% - 68.8%	38.2% - 48.8%
Risk-free interest rate	0.1% - 0.1%	0.1% - 0.1%	1.3% - 1.7%
Expected term	1.3-1.3 years	0.0-2.3 years	0.1-3.3 years

As of September 30, 2021 and 2020, the weighted-average fair value of SARs outstanding was $18.86 and $0.63 per award, respectively. SARs containing performance conditions and market conditions are discussed separately in the section below.

Stock Awards Containing Performance and Market Conditions

Stock awards containing performance conditions vest upon the achievement of specified financial targets of the Company or its business units. Vesting is generally measured on the first day of each fiscal quarter over the four-year terms of the awards, starting with the first fiscal quarter after the first anniversary of the grant date, based upon the trailing twelve months performance of the Company or its business units. When it is probable that the performance targets will be achieved, stock compensation expense is recognized ratably over the derived service period. If the Company determines that achievement of the performance targets is no longer probable, the Company no longer records expense and reverses all previously recognized expense. As of September 30, 2021, there was $0.4 million of unrecognized compensation costs related to stock options and RSUs & RSAs, containing performance conditions that are considered probable of being met, which is expected to be recognized over a weighted-average period of 3.0 years.

Stock awards containing market conditions vest upon the achievement of specified increases in the Company’s share price. Vesting is measured the first day of each fiscal quarter over the four-year terms of the award, starting with the first fiscal quarter after the first anniversary of the grant date, based upon the trailing 20-days average of the Company’s share price. Stock compensation cost is expensed on a straight-line basis over the derived service period for each stock price target within the award. The Company accelerates expense when a stock price target is achieved prior to the derived service period. For equity-classified awards, the Company does not reverse expense recognized if the stock price target(s) are not ultimately achieved, but expense is reversed when such situations occur for liability classified awards. As of September 30, 2021, there was $0.9 million of unrecognized compensation costs related to stock options, RSUs and SARs, containing market conditions, which is expected to be recognized over a weighted-average period of 0.5 years.

The fair value of stock options, RSUs and SARs containing market conditions is estimated using Monte Carlo simulations. The range of assumptions used to determine the fair value of these awards during the years ended September 30, 2021, 2020 and 2019 were as follows:


	Year ended September 30
	2021	2020	2019
Dividend yield	—	—	—
Expected volatility	51.6% - 54.6%	45.2% - 54.9%	45.5% - 55.0%
Risk-free interest rate	0.3% - 0.9%	0.1% - 1.7%	1.5% - 2.9%
Expected holding period (% of remaining term)	31.7% - 100.0%	30.7% - 100.0%	25.9% - 100.0%

Share Repurchase Program

We are authorized to repurchase issued and outstanding shares of our common stock under a share repurchase program approved by our Board of Directors. Share repurchases may be made through open market purchases, privately negotiated transactions or otherwise, at times and in such amounts as management deems appropriate. The timing and actual number of shares repurchased will depend on a variety of factors including price, corporate and regulatory requirements and other market conditions. The repurchase program may be discontinued or suspended at any time and will be funded using our available cash.

As of the fiscal year ended September 30, 2020, we had $6.1 million of remaining share repurchase authorization. On March 8, 2021, our Board of Directors authorized an additional $10 million of share repurchases of the Company's outstanding shares of common stock through March 31, 2023. We repurchased 957,079 shares for $16.1 million under this program during the six months ended March 31, 2021.

On May 3, 2021, the Company's Board of Directors authorized a new stock repurchase plan (the “May 3, 2021 Stock Repurchase Plan”) of up to $15 million of our outstanding shares of common stock through June 30, 2023. We repurchased 634,884 shares for $15.0 million under this program during the year ended September 30, 2021. On December 6, 2021, the Company's Board of Directors authorized the repurchase of up to $20 million of the Company's outstanding shares of common stock through December 31, 2023.

Other Share Repurchases

Separate from the share repurchase program, our stock incentive plans allow for participants to exercise stock options by surrendering shares of common stock equivalent in value to the exercise price due. During the three months ended June 30, 2021, no shares of common stock were surrendered by participants in the exercise of stock options. During the year ended September 30, 2021, participants surrendered 82,612 shares of common stock in the exercise of stock options. Any shares surrendered to the Company in this manner are not available for future grant.

Fair Value Measurement

12 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurement

The Company measures and records in the accompanying consolidated financial statements certain assets and liabilities at fair value on a recurring basis. Authoritative guidance issued by the FASB establishes a fair value hierarchy for those instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company's assumptions (unobservable inputs). The hierarchy consists of three levels:


Level 1						Quoted market prices in active markets for identical assets or liabilities;
Level 2						Inputs other than Level 1 inputs that are either directly or indirectly observable; and
Level 3						Unobservable inputs developed using estimates and assumptions developed by the Company, which reflect those that a market participant would use.

The Company had $40.0 million and $30.0 million of money market funds considered cash equivalents at September 30, 2021 and 2020, respectively. These assets were measured at fair value at September 30, 2021 and 2020 and were classified as Level 1 assets within the fair value hierarchy. There were no transfers between levels during the periods presented.

The Company’s financial assets and liabilities not measured at fair value are cash, accounts receivable, and accounts payable. The Company believes the carrying values of these instruments approximate fair value.

As of September 30, 2021 and 2020, the Company did not have any material assets or liabilities measured at fair value on a non-recurring basis.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Defined Benefit Pension Plan

12 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Defined Benefit Pension Plan

Certain employees of Liquidity Services UK Limited ("GoIndustry"), which the Company acquired in July 2012, are covered by the Henry Butcher Pension Fund and Life Assurance Scheme (the "Scheme"), a qualified defined benefit pension plan. The Company guarantees GoIndustry's performance on all present and future obligations to make payments to the Scheme for up to a maximum of £10 million British pounds. The Scheme was closed to new members on January 1, 2002.

The Company recognizes the funded status of its postretirement benefit plans, with a corresponding noncash adjustment to accumulated other comprehensive loss, net of tax, in stockholders' equity. The funded status is measured as the difference between the fair value of the Scheme's assets and the benefit obligation of the Scheme.

The net periodic benefit cost is recognized within Interest and other income, net in the Consolidated Statements of Operations, and for the years ended September 30, 2021, 2020 and 2019, included the following components:


	Year Ended September 30,
	2021		2020		2019
	(in thousands)
Interest cost	$	438	$	431	$	618
Expected return on plan assets	(793)		(797)		(965)
Amortization of prior service cost	21		19		—
Total net periodic benefit	$	(334)	$	(347)	$	(347)

The following table provides a reconciliation of benefit obligations, plan assets, and funded status related to the Company's qualified defined benefit pension plan for the years ended September 30, 2021 and 2020:


	Year Ended September 30,
	2021		2020
	(in thousands)
Change in benefit obligation
Beginning balance	$	26,047	$	23,240
Interest cost	438		431
Benefits paid	(781)		(597)
Actuarial loss/(gain)	152		1,803
Foreign currency exchange rate changes	1,099		1,170
Ending balance	$	26,955	$	26,047


	Year Ended September 30,
	2021		2020
	(in thousands)
Change in plan assets
Beginning balance at fair value	$	26,771	$	25,779
Actual return on plan assets	1,077		297
Benefits paid	(781)		(597)

Foreign currency exchange rate changes	1,141		1,292
Ending balance at fair value	$	28,208	$	26,771
Overfunded status of the Scheme	$	1,253	$	724

The pension asset of $1.3 million is recorded in Other long-term assets in the Consolidated Balance Sheet. Because the Scheme is closed to new participants, the accumulated benefit obligation is equal to the projected benefit obligation, which was $27.0 million and $26.0 million at September 30, 2021 and 2020, respectively.

During the year ended September 30, 2021, the Company extended early settlement offers to all members of the Scheme. There was no material impact to the consolidated financial statements as a result of the early settlement offers.

The amounts recognized in other comprehensive (income) loss related to the Company's qualified defined benefit pension plan, net of taxes, and the related foreign currency translation adjustments, for the years ended September 30, 2021 and 2020, is shown in the following table:


	Year Ended September 30,
	2021		2020
	(in thousands)
Accumulated other comprehensive (loss) income at beginning of year	$	(1,971)	$	303
Net actuarial gain (loss)	170		(2,293)
Foreign currency translation adjustments	(84)		19
Accumulated other comprehensive loss at end of year	$	(1,885)	$	(1,971)

The plan complies with the funding provisions of the UK Pensions Act 2004 and the Occupational Pension Schemes Regulations Act 2005. The Company does not plan to make contributions to the plan in the near future.

Actuarial Assumptions

The actuarial assumptions used to determine the benefit obligations at September 30, 2021 and 2020, and to determine the net periodic (benefit) cost for the year were as follows:


	September 30, 2021		September 30, 2020
Discount rate to determine net periodic (benefit) cost	1.60	%	1.80	%
Expected return on plan assets	2.82	%	3.00	%
Discount rate to determine benefit obligations	2.00	%	1.60	%
Rate of increases to deferred CPI linked benefits	3.10	%	2.50	%
Rate of increases to deferred RPI linked benefits	3.60	%	3.00	%

Mortality—105% for males and females of S2PxA mortality tables, projected in line with the 2020 Continuous Mortality Investigation projection model and a 1.3% per annum long-term rate of improvement.

Estimated Future Benefit Payments

The Company's pension plan expects to make the following benefit payments to participants over the next 10 years:


	Pension Benefits
	(in thousands)
Year ending September 30,
2022	$	904
2023	789
2024	1,213
2025	1,052
2027	1,010
2027 through 2030	4,390
Total	$	9,358

Fair Value Measurements

The investment policy and strategy of the plan assets, as established by the Trustees (the "Trustees") of the plan, strive to maximize the likelihood of achieving primary objectives of the investment policy established for the plan, which are:

•Funding—to ensure that the Plan is fully funded using assumptions that contain a modest margin for prudence. Where an actuarial valuation reveals a deficit, a recovery plan will be put in place which will take into account the financial covenant of the employer;

•Stability—to have due regard to the likely level and volatility of required contributions when setting the Plan's investment strategy; and

•Security—to ensure that the solvency position of the Scheme is expected to improve. The Trustees will take into account the strength of employer's covenant when determining the expected improvement in the solvency position of the Plan.

The assets are allocated among equity securities, corporate bonds, and diversified funds. The assets are not rebalanced, but the allocation is reviewed on a periodic basis to ensure that the investments are appropriate to the Scheme's circumstances. The Trustees review the investment policy on an ongoing basis, to determine whether a change in the policy or asset allocation targets is necessary. The Company has elected to use a bid value of Scheme assets to calculate the expected return on assets in the net periodic benefit cost. The assets consisted of the following as of September 30, 2021 and 2020:


	2021		2020
Equity securities	21.0	%	20.6	%
Corporate bonds	53.0	%	53.0	%
Diversified fund	26.0	%	26.0	%
Cash	—	%	0.4	%
Total	100.0	%	100.0	%

The expected long-term rate of return for the plan's total assets is based on the expected returns of each of the above categories, weighted based on the current target allocation for each class. The Trustees evaluate whether adjustments are needed based on historical returns to more accurately reflect expectations of future returns.

The Company is required to present certain fair value disclosures related to its postretirement benefit plan assets, even though those assets are not included in the Company's Consolidated Balance Sheets. The following table presents the fair value of the assets of the Company's qualified defined benefit pension plan by asset category and their level within the fair value hierarchy.


Balance as of September 30, 2021	Level 1		Level 2		Level 3		Total
	(in thousands)
Equity securities	$	—	$	5,860	$	—	$	5,860
Corporate bonds	—		14,878		—		14,878
Diversified fund	—		7,279		—		7,279
Cash	191		—		—		191
Total	$	191	$	28,017	$	—	$	28,208


Balance as of September 30, 2020	Level 1		Level 2		Level 3		Total
	(in thousands)
Equity securities	$	—	$	5,526	$	—	$	5,526
Corporate bonds	—		14,194		—		14,194
Diversified fund	—		6,957		—		6,957
Cash	94		—		—		94
Total	$	94	$	26,677	$	—	$	26,771

Valuation Techniques

The Company relies on pricing inputs from investment fund managers to value investments. The fund manager prices the underlying securities using independent external pricing sources.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Name Accounting Standards Codification
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+ Details

Business Realignment Expenses

12 Months Ended

Sep. 30, 2021

Restructuring and Related Activities [Abstract]

Business Realignment Expenses

Business realignment expenses are associated with management changes, exiting certain businesses, or other cost saving actions, and include employee severance and benefit costs associated with terminations, occupancy costs associated the ceased use of facilities, and other related costs, such as impairments. Business realignment expenses are recorded as a component of Other operating expenses on the Consolidated Statements of Operations.

For the year ended September 30, 2020, business realignment expenses were incurred related to the elimination of certain positions in response to the COVID-19 pandemic.

For the year ended September 30, 2019, business realignment expenses were incurred related to: management changes associated with a strategic reorganization of the Company's go-to-market strategy for self-directed and fully-managed market place services, the conclusion of the Scrap contract, and other cost saving actions.

The table below sets forth the significant components and activity in the liability for business realignment initiatives during the year ended September 30, 2021, on a segment and consolidated basis:


(in thousands)	Liability Balance at September 30, 2019		Adoption of ASC 842			Business Realignment Expenses		Cash Payments		Liability Balance at September 30, 2020		Business Realignment Expenses		Cash Payments		Liability Balance at September 30, 2021
Employee severance and benefit costs:
GovDeals	$	—	$	—		$	29	$	(25)	$	4	$	—	$	(4)	$	—
RSCG	—		—			84		(64)		20		—		(20)		—
CAG	414		—			120		(481)		53		5		(58)		—
Corporate & Other	238		—			172		(410)		—		—		—		—
Total employee severance and benefit costs	652		—		—	405		(980)		77		5		(82)		—
Occupancy and other costs:
CAG	169		(169)			—		—		—		—		—		—
Corporate & Other	—		—			—		—		—		—		—		—
Total occupancy and other costs	169		(169)			—		—		—		—		—		—
Total business realignment	$	821	$	(169)		$	405	$	(980)	$	77	$	5	$	(82)	$	—

Legal Proceedings	12 Months Ended
Legal Proceedings	Sep. 30, 2021
Loss Contingency, Information about Litigation Matters [Abstract]
Legal Proceedings	Legal Proceedings The Company reserves for contingent liabilities based on ASC 450, Contingencies, when it determines that a liability is probable and reasonably estimable. From time to time, the Company may become involved in litigation relating to claims arising in the ordinary course of the business. Former Employee Matters On December 22, 2020, the Company’s former Vice President, Human Resources (the “HR Plaintiff”) filed a claim with the Equal Employment Opportunity Commission (“EEOC”) for wrongful termination on the basis of gender, race, and age. The EEOC subsequently assigned HR Plaintiff’s claim to the Montgomery County Office of Human Rights for investigation, which, in turn, dismissed HR Plaintiff’s claim after HR Plaintiff filed a complaint in the United States District Court for the District of Maryland Southern Division on May 19, 2021. The Company believes this claim is without merit and cannot estimate a range of potential liability, if any, at this time. The Company’s employment practices liability insurance carrier, CNA, has accepted tender of this claim. Separately, HR Plaintiff also alleged outside of the above process wage and hour violations under Maryland law for failure to pay his fiscal year 2020 performance bonus. The Company and HR Plaintiff settled the wage and hour claims for an immaterial amount in May 2021. On October 22, 2021, the Company’s former Chief Marketing Officer (“Marketing Plaintiff”) filed a claim with the EEOC alleging that the Company discriminated against him on the basis of his race and age and that the Company retaliated against him. The Company believes these claims are without merit and cannot estimate a range of potential liability, if any, at this time. CNA has accepted tender of the claims. Separately, Marketing Plaintiff also alleged wage and hour violations under Maryland law for failure to pay his fiscal year 2021 performance bonus. Unless otherwise noted, there are no claims or actions pending or threatened against the Company that, if adversely determined, would in the Company's management's judgment have a material adverse effect on the Company.

Segment Information

12 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Segment Information

The Company provides operating results in four reportable segments: GovDeals, Capital Assets Group (CAG), Retail Supply Chain Group (RSCG), Machinio. Descriptions of our reportable segments are as follows:

•The GovDeals reportable segment provides self-directed service solutions that enable local and state government entities including city, county and state agencies, located in the United States and Canada to sell surplus and

salvage assets through our GovDeals marketplace. Through the end of fiscal 2019, GovDeals provided self-directed service solutions to commercial businesses as part of the Auction Deals marketplace.

•The RSCG reportable segment consists of marketplaces that enable corporations located in the United States and Canada to sell surplus and salvage consumer goods. RSCG also offers a suite of services that includes returns management, asset recovery, and e-commerce services. This segment includes the Company's Liquidation.com and Secondipity marketplaces. Through the end of third quarter fiscal 2021, RSCG operated the Liquidation.com DIRECT marketplace for truckload quantities of retail surplus. Those assets are now sold on the Liquidation.com marketplace.

•The CAG reportable segment provides managed and self-directed service solutions to sellers and consists of marketplaces that enable commercial businesses to sell surplus and idle assets. CAG also offers a suite of services that includes surplus management, asset valuation, asset sales and marketing. Commercial seller assets are located across North America, Europe, Australia, Asia, and Africa. This segment includes the Company's Network International and GoIndustry DoveBid marketplaces and, beginning in fiscal 2020, self-directed service solutions for commercial businesses on the AllSurplus marketplace. Prior to the conclusion of the Scrap Contract, CAG sold scrap assets from the DoD on its Government Liquidation marketplace.

•The Machinio reportable segment operates a global search engine platform for listing used equipment for sale in the construction, machine tool, transportation, printing and agriculture sectors.

We also report results of Corporate & Other, including elimination adjustments. For the year ended September 30, 2019, Corporate & Other included a previously existing operating segment that did not meet the quantitative thresholds to be a reportable segment, IronDirect. The Company exited the IronDirect business in January 2019.

Decisions concerning the allocation of the Company’s resources are made by the Company’s Chief Operating Decision Maker ("CODM"), which is the Company's Chief Executive Officer, with oversight by the Board of Directors. The Company reports segment information based on the internal performance measures used by the CODM to assess the performance of each operating segment in a given period. In connection with that assessment, the CODM uses segment gross profit to evaluate the performance of each segment. Segment gross profit is calculated as total revenue less cost of goods sold and seller distributions (excludes depreciation and amortization).

The following table sets forth certain financial information for the Company's reportable segments:


		Year Ended September 30,
(in thousands)		2021		2020		2019
GovDeals:
	Revenue	$	—	$	—	$	—
	Fee revenue	49,579		32,806		32,936
	Total revenue	49,579		32,806		32,936
	Gross profit	47,030		30,721		30,386

RSCG:
	Revenue	130,790		118,398		110,736
	Fee revenue	28,016		18,093		16,585
	Total revenue	158,806		136,491		127,321
	Gross profit	64,564		49,727		44,967

CAG:
	Revenue	15,361		9,182		36,684
	Fee revenue	24,284		20,299		23,558
	Total revenue	39,645		29,481		60,242
	Gross profit	29,324		22,714		32,679

Machinio:
	Revenue	—		—		—
	Fee revenue	9,559		7,213		5,598
	Total revenue	9,559		7,213		5,598
	Gross profit	8,992		6,813		5,196

Corporate & Other, including elimination adjustments:
	Revenue	—		—		469
	Fee revenue	(57)		(51)		(41)
	Total revenue	(57)		(51)		428
	Gross profit	(57)		(51)		52

Consolidated:
	Revenue	146,151		127,580		147,889
	Fee revenue	111,380		78,360		78,636
	Total revenue	257,531		205,940		226,525
	Gross profit	149,853		109,924		113,280

The following table presents a reconciliation between gross profit used in the reportable segments and the Company's consolidated results:


		Year Ended September 30,
(in thousands)		2021	2020	2019
Reconciliation:
	Gross profit	149,853	109,924	113,280
	Operating expenses	122,679	113,248	127,739
	Other operating expenses	6	573	5,049
	Interest and other income, net	(411)	(924)	(1,448)
	Income (loss) before income taxes	27,579	(2,973)	(18,060)

Total segment assets reconciled to consolidated amounts are as follows:


	September 30,
(in thousands)	2021		2020
GovDeals	$	148,111	$	102,083
RSCG	84,971		51,230
CAG	94,884		107,529
Machinio	29,806		26,568
Corporate & Other, including elimination adjustments	(102,196)		(90,776)
Total Assets:	$	255,576	$	196,634

Revenue attributed to countries that represent a significant portion of consolidated revenues are as follows:


	Year Ended September 30,
(in thousands)	2021		2020		2019
United States	$	214,162	$	180,887	$	191,816
Rest of the world	43,369		25,053		34,709
Total Revenue	$	257,531	$	205,940	$	226,525

Total long-lived assets by geographic areas are as follows:


	September 30,
(in thousands)	2021		2020
United States	$	17,261	$	17,358
Rest of the world	373		485
Total Long-lived Assets	$	17,634	$	17,843

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

+ Details

Subsequent Events	12 Months Ended
Subsequent Events	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On November 1, 2021, the Company entered into a definitive agreement to purchase all of the issued and outstanding shares of stock of Bid4Assets, Inc. (Bid4Assets), a pioneer in internet-based public auctions of real property. This acquisition will support our growth objectives for the GovDeals reportable segment. Upon closing, the Company paid $15 million in cash, including the assumption of a minimum working capital amount of $0.3 million. Shareholders of Bid4Assets are eligible to receive earn-out consideration of up to $37.5 million in cash, payable based on Bid4Assets' achievement of certain EBITDA targets measured as of each trailing twelve-month period and determined at the end of each calendar quarter, for the period from October 1, 2021 until the quarter ended December 31, 2022. The Company is currently evaluating the purchase price accounting for this transaction and as such, the final accounting treatment could result in material changes to our balance sheet and earnings during fiscal 2022.

Quarterly Results (Unaudited)

12 Months Ended

Sep. 30, 2021

Quarterly Financial Information Disclosure [Abstract]

Quarterly Results (Unaudited)

Quarterly Results (Unaudited) The following table sets forth for the eight most recent quarters the selected unaudited quarterly consolidated statement of operations data. The unaudited quarterly consolidated statement of operations data has been prepared on the same basis as the Company's audited consolidated financial statements and, in the opinion of management, includes all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of this data.


	Three months ended
	Dec. 31, 2019		Mar. 31, 2020		June 30, 2020		Sept. 30, 2020		Dec. 31, 2020		Mar. 31, 2021		June 30, 2021		Sept. 30, 2021
	(in thousands, except share and per share data)
Revenue	$	49,504	$	52,824	$	47,722	$	55,890	$	55,751	$	61,786	$	69,666	$	70,328
Gross profit (excludes depreciation and amortization)	$	25,328	$	26,205	$	25,228	$	33,163	$	33,178	$	35,401	$	41,213	$	40,061
Income (loss) before income taxes	$	(4,738)	$	(4,195)	$	422	$	5,538	$	4,811	$	5,667	$	8,848	$	8,253
Net income (loss)	$	(5,196)	$	(4,238)	$	213	$	5,447	$	4,514	$	5,260	$	8,419	$	32,756
Basic income (loss) per common share	$	(0.15)	$	(0.13)	$	0.01	$	0.16	$	0.14	$	0.16	$	0.25	$	0.98
Diluted income (loss) per common share	$	(0.15)	$	(0.13)	$	0.01	$	0.16	$	0.13	$	0.15	$	0.24	$	0.93
Basic weighted average shares outstanding	33,545,235		33,624,889		33,695,936		33,584,040		33,176,895		33,491,395		33,371,906		33,297,879
Diluted weighted average shares outstanding	33,545,235		33,624,889		33,815,332		33,986,862		34,911,119		35,559,747		35,437,761		35,294,326

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Sep. 30, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

(Dollars in Thousands)


	Balance at beginning of period		Charged (credited) to expense	Reductions	Balance at end of period
Deferred tax valuation allowance (deducted from net deferred tax assets)
Year ended September 30, 2019	$	39,337	2,572	—	$	41,909
Year ended September 30, 2020	41,909		(121)	—	41,788
Year ended September 30, 2021	$	41,788	(27,975)	—	$	13,813
Allowance for doubtful accounts (deducted from accounts receivable)
Year ended September 30, 2019	$	337	178	(224)	$	291
Year ended September 30, 2020	291		200	(102)	389
Year ended September 30, 2021	$	389	297	(196)	$	490
Provision for inventory allowance (deducted from inventory)
Year ended September 30, 2019	$	503	331	(503)	$	331
Year ended September 30, 2020	331		328	(359)	300
Year ended September 30, 2021	$	300	174	(300)	$	174

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Use of Estimates

Principles of Consolidation and Basis of Presentation

Business Combinations

Cash and Cash Equivalents

The Company considers all highly liquid securities purchased with an initial maturity of three months or less to be cash equivalents.

Accounts Receivable

Inventory

InventoryInventory consists of property obtained for resale, generally through the online auction process, and is stated at the lower of cost or net realizable value. Cost is generally determined using the specific identification method. Costs associated with our warehouse operations are expensed as incurred and included within Technology and operations expenses in the Statements of Operations. Charges for unsellable inventory, as well as for inventory written down to net realizable value, are included in Cost of goods sold in the period in which they have been determined to occur.

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assetsPrepaid expenses and other current assets include the short-term portion of a promissory note (described in "Other Assets"), as well as other miscellaneous prepaid expenses.

Other Assets

Property and Equipment

Property and equipment are recorded at cost, and depreciated or amortized on a straight-line basis over the following estimated useful lives:


Computers and purchased software						One to five years
Office/operational equipment						Three to five years
Furniture and fixtures						Five to seven years
Internally developed software for internal-use						Five years
Leasehold improvements						Shorter of lease term or useful life
Buildings						Thirty-nine years
Vehicles						Five years
Land						Not depreciated

Leases

Lease assets and liabilities are not recognized when the lease term is 12 months or less, however, short-term lease expense is still recognized on a straight-line basis over the lease term.

Lease assets are assessed for impairment in accordance with the Company’s accounting policy for the impairment of long-lived assets.

Intangible Assets

Intangible assets consist of contract intangibles, brand and technology, and patent and trademarks. Intangible assets are amortized using the straight-line method over their estimated useful lives.

Impairment of Long-Lived Assets

Impairment of Long-Lived AssetsLong-lived assets, including definite-lived intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. If an impairment indicator is present, the Company evaluates recoverability by comparing the carrying amount of the assets to future undiscounted net cash flows expected to be generated by the assets. If the assets are impaired, the impairment recognized is measured by the amount by which the carrying amount exceeds the estimated fair value of the assets.

Goodwill

Deferred Revenue

Deferred revenue is primarily derived from Machinio Advertising and System subscriptions that range from one to forty months. Subscription fees are recognized ratably over the term of the agreements.

Revenue Recognition

The Company adopted the Financial Accounting Standard Board's (FASB) Accounting Standards Codification (ASC) Topic 606, Revenue from Contracts with Customers (ASC 606) effective October 1, 2018.

Cost of Goods Sold

Contract Assets and Liabilities

Contract CostsContract costs relate to sales commissions paid on subscription contracts that are capitalized within our Machinio segment. Contract costs are amortized over the expected life of the customer contract.

Risk Associated with Certain Concentrations

Income Taxes

Stock-Based Compensation

expense for performance-based awards if there is a change in determination of whether it is probable that the performance condition will be achieved.

The Company recognizes the impact of forfeitures in the period they occur.

Compensation expense from the stock awards is included in the same lines on the consolidated statements of operations as the cash compensation to the employees receiving the stock awards.

Excess tax benefits realized from stock awards are reported as cash flows from operating activities on the consolidated statement of cash flows.

Advertising Costs

Advertising CostsAdvertising expenditures are expensed as incurred.

Treasury Stock

Treasury StockTreasury stock is presented at cost, including any applicable commissions and fees, as a reduction of stockholders’ equity in the consolidated balance sheets and statements of equity. Treasury stock held by us may be retired or reissued in the future.

Foreign Currency Translation

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Loss

The following table shows the changes in accumulated other comprehensive income (loss), net of taxes (in thousands):


	Foreign Currency Translation Adjustments		Net Change Pension and Other Postretirement Benefit Plans		Accumulated Other Comprehensive Loss
Balance at September 30, 2018	$	(7,585)	$	1,136	$	(6,449)
Current-period other comprehensive (loss) income	(984)		(540)		(1,524)
Balance at September 30, 2019	(8,569)		596		(7,973)
Current-period other comprehensive (loss) income	484		(2,293)		(1,809)
Balance at September 30, 2020	(8,085)		(1,697)		(9,782)
Current-period other comprehensive (loss) income	601		170		771
Balance at September 30, 2021	$	(7,484)	$	(1,527)	$	(9,011)

Net Loss Per Share (EPS)

Net Income (Loss) Per Share (EPS)See discussion of our Net income (loss) per share (EPS) determination and related calculations below at Note 3 Earnings Per Share.

Recent Accounting Pronouncements

Accounting Standards Adopted

Accounting Standards Not Yet Adopted

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Schedule of property and equipment useful lives

Property and equipment are recorded at cost, and depreciated or amortized on a straight-line basis over the following estimated useful lives:


Computers and purchased software						One to five years
Office/operational equipment						Three to five years
Furniture and fixtures						Five to seven years
Internally developed software for internal-use						Five years
Leasehold improvements						Shorter of lease term or useful life
Buildings						Thirty-nine years
Vehicles						Five years
Land						Not depreciated

Schedule of changes in accumulated other comprehensive income (loss), net of taxes

The following table shows the changes in accumulated other comprehensive income (loss), net of taxes (in thousands):


	Foreign Currency Translation Adjustments		Net Change Pension and Other Postretirement Benefit Plans		Accumulated Other Comprehensive Loss
Balance at September 30, 2018	$	(7,585)	$	1,136	$	(6,449)
Current-period other comprehensive (loss) income	(984)		(540)		(1,524)
Balance at September 30, 2019	(8,569)		596		(7,973)
Current-period other comprehensive (loss) income	484		(2,293)		(1,809)
Balance at September 30, 2020	(8,085)		(1,697)		(9,782)
Current-period other comprehensive (loss) income	601		170		771
Balance at September 30, 2021	$	(7,484)	$	(1,527)	$	(9,011)

Earnings Per Share (Tables)

12 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

The computation of basic and diluted net income per share is as follows:


	Year Ended September 30,
	2021		2020		2019
Numerator:
Net income (loss)	$	50,949	$	(3,774)	$	(19,260)
Denominator:
Basic weighted average shares outstanding	33,333,557		33,612,263		33,062,976
Dilutive impact of stock options, RSUs and RSAs	1,690,551		—		—
Diluted weighted average shares outstanding	35,024,108		33,612,263		33,062,976
Basic income (loss) per common share	$	1.53	$	(0.11)	$	(0.58)
Diluted income (loss) per common share	$	1.45	$	(0.11)	$	(0.58)
Stock options, RSUs and RSAs excluded from income (loss) per diluted share because their effect would have been anti-dilutive	420,454		3,526,055		4,621,199

Property and Equipment (Tables)

12 Months Ended

Sep. 30, 2021

Property, Plant and Equipment [Abstract]

Schedule of property and equipment

Property and equipment, including equipment under capital lease obligations, consists of the following:


	September 30,
	2021		2020
	(in thousands)
Computers and purchased software	$	1,981	$	2,060
Internally developed software for internal-use	18,942		13,860
Office/Operational equipment	6,373		5,781
Leasehold improvements	3,244		3,451
Building	2,158		2,151
Furniture and fixtures	655		945
Vehicles	1,129		1,043
Land	754		754
Construction in progress	956		2,353
Total property and equipment	36,192		32,398
Less: Accumulated depreciation and amortization	(18,558)		(14,555)
Total property and equipment, net	$	17,634	$	17,843

Leases (Tables)

12 Months Ended

Sep. 30, 2021

Leases [Abstract]

Lease, cost

The components of lease expense are:


	September 30,
	2021		2020
	(in thousands)
Finance lease – lease asset amortization	$	54	$	69
Finance lease – interest on lease liabilities	22		23
Operating lease cost	5,139		5,264
Operating lease impairment expense	172		—
Short-term lease cost	242		125
Variable lease cost (1)	1,532		1,463
Sublease income	(184)		(258)
Total net lease cost	$	6,977	$	6,686

Supplemental disclosures of cash flow information related to leases are:


(in thousands)	Year Ended September 30,
	2021		2020
Cash paid for amounts included in operating lease liabilities	$	4,319	$	4,771
Cash paid for amounts included in finance lease liabilities	42		34
Non-cash: lease liabilities arising from new operating lease assets obtained (1)	3,349		12,190
Non-cash: lease liabilities arising from new finance lease assets obtained	137		10
Non-cash: adjustments to lease assets and liabilities	3,756		3,942

(1) Year ended September 30, 2020 amount includes $12.2 million of lease liabilities recognized upon the adoption of ASC 842 on October 1, 2019 (see Note 2).

Lessee, operating lease, liability, maturity

Maturities of lease liabilities are:


	September 30, 2021
(in thousands)	Operating Leases		Finance Leases
2022	$	4,882	$	78
2023	4,145		79
2024	3,076		59
2024	2,445		30
2025	1,441		30
Thereafter	212		12
Total lease payments (1)	$	16,201	$	288
Less: imputed interest (2)	(1,855)		(38)
Total lease liabilities	$	14,346	$	250

(1) The weighted average remaining lease term is 3.7 years for operating leases and 4.1 years for finance leases.

(2) The weighted average discount rate is 6.5% for operating leases and 6.7% for finance leases.

Finance lease, liability, fiscal year maturity

Maturities of lease liabilities are:


	September 30, 2021
(in thousands)	Operating Leases		Finance Leases
2022	$	4,882	$	78
2023	4,145		79
2024	3,076		59
2024	2,445		30
2025	1,441		30
Thereafter	212		12
Total lease payments (1)	$	16,201	$	288
Less: imputed interest (2)	(1,855)		(38)
Total lease liabilities	$	14,346	$	250

(1) The weighted average remaining lease term is 3.7 years for operating leases and 4.1 years for finance leases.

(2) The weighted average discount rate is 6.5% for operating leases and 6.7% for finance leases.

Goodwill (Tables)

12 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of goodwill activity

The carrying value and changes in the carrying value of goodwill attributable to each reportable segment were as follows:


Goodwill (in thousands)	CAG		GovDeals		Machinio		Total
Balance at September 30, 2018	$	21,530	$	23,731	$	14,558	$	59,819

Translation adjustments	(352)		—		—		(352)
Balance at September 30, 2019	$	21,178	$	23,731	$	14,558	$	59,467

Translation adjustments	372		—		—		372
Balance at September 30, 2020	$	21,550	$	23,731	$	14,558	$	59,839
Translation adjustments	33		—		—		33
Balance at September 30, 2021	$	21,583	$	23,731	$	14,558	$	59,872

Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2021

Finite-Lived Intangible Assets, Net [Abstract]

Schedule of intangible assets

Intangible assets consist of the following:


			Balance as of September 30, 2021						Balance as of September 30, 2020
	Useful Life (in years)	Weighted average useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
			(in thousands)						(in thousands)
Contract intangibles	6	6.0	$	3,100	$	(1,679)	$	1,421	$	3,100	$	(1,162)	$	1,938
Brand and technology	5	5.0	2,700		(1,755)		945		2,700		(1,215)		1,485
Patent and trademarks	7 - 10	8.6	2,360		(1,273)		1,087		2,329		(994)		1,335
Total intangible assets, net			$	8,160	$	(4,707)	$	3,453	$	8,129	$	(3,371)	$	4,758

Schedule of future expected amortization of intangible assets

Future expected amortization of intangible assets at September 30, 2021, is as follows:


Year Ending September 30,	Amortization
	(in thousands)
2022	$	1,330
2023	1,187
2024	649
2025	287
2026	—
Thereafter	—
Total	$	3,453

Income Taxes (Tables)

12 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Schedule of components of provision for income taxes of continuing operations

The components of the provision for income taxes of continuing operations are as follows:


	Year Ended September 30,
	2021		2020		2019
	(in thousands)
Current tax provision (benefit):
U.S. Federal	$	—	$	—	$	—
State	293		382		453
Foreign	847		313		611
	1,140		695		1,064
Deferred tax provision (benefit):
U.S. Federal	(23,315)		74		103
State	(1,252)		(27)		(31)
Foreign	57		59		64
	(24,510)		106		136
Total (benefit) provision	$	(23,370)	$	801	$	1,200

Schedule of significant components of deferred tax assets and liabilities

Significant components of the Company's deferred tax assets and liabilities are as follows:


	September 30,
	2021		2020
	(in thousands)
Deferred tax assets:
Net operating losses—Foreign	$	13,593	$	12,709
Net operating losses—U.S.	31,456		35,126
Accrued vacation and bonus	678		571
Inventory capitalization	219		54
Allowance for doubtful accounts	96		65
Stock compensation expense	1,415		1,804
Operating lease assets	3,605		2,236

Depreciation	2,339		1,266
Other	897		893
Total deferred tax assets before valuation allowance	54,298		54,724
Less: valuation allowance	(13,813)		(41,788)
Net deferred tax assets	40,485		12,936
Deferred tax liabilities:
Amortization of intangibles	107		291
Amortization of goodwill	7,322		6,666

Capitalized costs	5,602		4,470
Operating lease liabilities	3,394		2,059
Pension liability	238		138
Total deferred tax liabilities	$	16,663	$	13,624
Net deferred taxes	$	23,822	$	(688)

Schedule of reconciliation of U.S. federal statutory rate to effective rate for continuing operations

The reconciliation of the U.S. federal statutory rate to the effective rate for continuing operations is as follows:


	Year Ended September 30,
	2021		2020		2019
U.S. statutory rate	21.0	%	21.0	%	21.0	%
Stock-based stock compensation expense	(14.1)	%	(14.9)	%	(2.0)	%
Nondeductible compensation expense	5.5	%	(6.0)	%	(0.6)	%
Other permanent items	0.1	%	(1.1)	%	(4.2)	%
State taxes	3.0	%	(13.2)	%	(0.4)	%
Net foreign rate differential	0.5	%	(0.8)	%	(0.6)	%
Unrecognized tax benefits	0.1	%	5.1	%	(1.5)	%
Change in valuation allowance	(98.9)	%	9.9	%	(22.5)	%

Write-down of deferred tax assets on share-based stock compensation	0.7	%	(12.3)	%	(7.9)	%
Write-down of deferred tax assets on net operating loss	(2.8)	%	(15.9)	%	10.6	%
Other	0.2	%	1.3	%	1.5	%
Effective rate	(84.7)	%	(26.9)	%	(6.6)	%

Schedule of reconciliation unrecognized tax benefits

The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (in thousands):


	Year Ended September 30,
	2021		2020		2019
Beginning balance at October 1	$	123	$	273	$	—
Additions based on positions related to the current year	20		—		—
Additions for tax positions of prior years	—		—		273
Reductions for tax positions of prior years	—		(150)		—
Settlements	—		—		—
Balance at September 30	$	143	$	123	$	273

Equity Transactions (Tables)

12 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Summary of share-based compensation expense

The table below presents the components of share-based compensation expense (in thousands):


	Year Ended September 30,
	2021		2020		2019
Equity-classified awards:
Stock options	$	3,117	$	2,054	$	1,530
RSUs & RSAs	2,977		3,635		4,496
Liability-classified awards:
SARs	$	853	$	(29)	$	482
Total stock compensation expense:	$	6,947	$	5,660	$	6,508

Summary of stock option activity

The table below presents stock option activity (aggregate intrinsic value in thousands):


	Stock Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding as of September 30, 2020	3,075,914	$	8.54	6.16	$	2,841
Granted	1,108,273	$	10.60		$	—
Exercised	(1,033,529)	$	6.59		$	15,036
Forfeited	(272,720)	$	7.82		$	2,547
Expired	(33,653)	$	15.35		$	108
Outstanding as of September 30, 2021	2,844,285	$	10.04	6.14	$	34,877
Vested and expected to vest as of September 30, 2021	2,810,202	$	9.94	6.10	$	34,775
Exercisable as of September 30, 2021	1,477,408	$	10.37	4.24	$	18,589

Summary of fair value assumptions, stock options

The range of assumptions used to determine the fair value of stock options using the Black-Scholes option-pricing model during the years ended September 30, 2021, 2020 and 2019 were as follows:


	Year ended September 30
	2021	2020	2019
Dividend yield	—	—	—
Expected volatility	51.0% - 55.9%	46.5% - 51.0%	47.8% - 53.7%
Risk-free interest rate	0.4% - 0.8%	0.5% - 1.5%	1.9% - 2.8%
Expected term	4.6- 7.6 years	4.6 - 7.4 years	4.2 - 7.1 years

Summary of RSU and RSA Activity

The table below presents RSU & RSA activity (aggregate fair value in thousands):


	RSU & RSA	Weighted- Average Grant Date Fair Value		Weighted- Average Remaining Contractual Term (years)	Aggregate Fair Value
Outstanding as of September 30, 2020	1,545,285	$	6.84	1.85	$	11,528
Granted	330,545	$	14.08		$	4,653
Vested	(811,773)	$	6.78		$	13,780
Forfeited	(146,676)	$	8.98		$	2,688
Outstanding as of September 30, 2021	917,381	$	9.15	1.98	$	19,825
Expected to vest as of September 30, 2021	666,092	$	10.17	2.35	$	14,394

Summary of stock appreciation right activity

The table below presents SAR award activity (aggregate intrinsic value in thousands):


	SARs	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding as of September 30, 2020	160,810	$	8.45	1.00	$	96

Exercised	(45,084)	$	8.45		$	443
Forfeited	(73,681)	$	9.80		$	213
Outstanding as of September 30, 2021	42,045	$	6.11	1.26	$	652
Vested and expected to vest as of September 30, 2021	42,045	$	6.11	1.26	$	652
Exercisable as of September 30, 2021	12,045	$	6.11	1.26	$	187

Summary of fair value assumptions, stock appreciation rights

The range of assumptions used to determine the fair value of outstanding SARs as of September 30, 2021, 2020 and 2019 were as follows:


	Year ended September 30
	2021	2020	2019
Dividend yield	—	—	—
Expected volatility	78.3% - 78.3%	55.0% - 68.8%	38.2% - 48.8%
Risk-free interest rate	0.1% - 0.1%	0.1% - 0.1%	1.3% - 1.7%
Expected term	1.3-1.3 years	0.0-2.3 years	0.1-3.3 years

Summary of fair value assumptions


	Year ended September 30
	2021	2020	2019
Dividend yield	—	—	—
Expected volatility	51.6% - 54.6%	45.2% - 54.9%	45.5% - 55.0%
Risk-free interest rate	0.3% - 0.9%	0.1% - 1.7%	1.5% - 2.9%
Expected holding period (% of remaining term)	31.7% - 100.0%	30.7% - 100.0%	25.9% - 100.0%

Defined Benefit Pension Plan (Tables)

12 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of net periodic benefit cost recognized


	Year Ended September 30,
	2021		2020		2019
	(in thousands)
Interest cost	$	438	$	431	$	618
Expected return on plan assets	(793)		(797)		(965)
Amortization of prior service cost	21		19		—
Total net periodic benefit	$	(334)	$	(347)	$	(347)

Schedule of reconciliation of benefit obligations, plan assets, and funded status related to qualified defined benefit pension plan


	Year Ended September 30,
	2021		2020
	(in thousands)
Change in benefit obligation
Beginning balance	$	26,047	$	23,240
Interest cost	438		431
Benefits paid	(781)		(597)
Actuarial loss/(gain)	152		1,803
Foreign currency exchange rate changes	1,099		1,170
Ending balance	$	26,955	$	26,047


	Year Ended September 30,
	2021		2020
	(in thousands)
Change in plan assets
Beginning balance at fair value	$	26,771	$	25,779
Actual return on plan assets	1,077		297
Benefits paid	(781)		(597)

Foreign currency exchange rate changes	1,141		1,292
Ending balance at fair value	$	28,208	$	26,771
Overfunded status of the Scheme	$	1,253	$	724

Schedule of amount recognized in other comprehensive loss related to qualified defined benefit pension plan, net of tax


	Year Ended September 30,
	2021		2020
	(in thousands)
Accumulated other comprehensive (loss) income at beginning of year	$	(1,971)	$	303
Net actuarial gain (loss)	170		(2,293)
Foreign currency translation adjustments	(84)		19
Accumulated other comprehensive loss at end of year	$	(1,885)	$	(1,971)

Schedule of actuarial assumptions used to determine (benefit) obligations and net periodic benefit cost

The actuarial assumptions used to determine the benefit obligations at September 30, 2021 and 2020, and to determine the net periodic (benefit) cost for the year were as follows:


	September 30, 2021		September 30, 2020
Discount rate to determine net periodic (benefit) cost	1.60	%	1.80	%
Expected return on plan assets	2.82	%	3.00	%
Discount rate to determine benefit obligations	2.00	%	1.60	%
Rate of increases to deferred CPI linked benefits	3.10	%	2.50	%
Rate of increases to deferred RPI linked benefits	3.60	%	3.00	%

Schedule of expected benefit payments to participants

The Company's pension plan expects to make the following benefit payments to participants over the next 10 years:


	Pension Benefits
	(in thousands)
Year ending September 30,
2022	$	904
2023	789
2024	1,213
2025	1,052
2027	1,010
2027 through 2030	4,390
Total	$	9,358

Schedule of allocation of plan assets

The assets consisted of the following as of September 30, 2021 and 2020:


	2021		2020
Equity securities	21.0	%	20.6	%
Corporate bonds	53.0	%	53.0	%
Diversified fund	26.0	%	26.0	%
Cash	—	%	0.4	%
Total	100.0	%	100.0	%

Schedule of fair value of assets of qualified defined benefit pension plan by asset category and level within fair value hierarchy

The following table presents the fair value of the assets of the Company's qualified defined benefit pension plan by asset category and their level within the fair value hierarchy.


Balance as of September 30, 2021	Level 1		Level 2		Level 3		Total
	(in thousands)
Equity securities	$	—	$	5,860	$	—	$	5,860
Corporate bonds	—		14,878		—		14,878
Diversified fund	—		7,279		—		7,279
Cash	191		—		—		191
Total	$	191	$	28,017	$	—	$	28,208


Balance as of September 30, 2020	Level 1		Level 2		Level 3		Total
	(in thousands)
Equity securities	$	—	$	5,526	$	—	$	5,526
Corporate bonds	—		14,194		—		14,194
Diversified fund	—		6,957		—		6,957
Cash	94		—		—		94
Total	$	94	$	26,677	$	—	$	26,771

Business Realignment Expenses (Tables)

12 Months Ended

Sep. 30, 2021

Restructuring and Related Activities [Abstract]

Schedule of significant components and activity in business realignment initiatives

The table below sets forth the significant components and activity in the liability for business realignment initiatives during the year ended September 30, 2021, on a segment and consolidated basis:


(in thousands)	Liability Balance at September 30, 2019		Adoption of ASC 842			Business Realignment Expenses		Cash Payments		Liability Balance at September 30, 2020		Business Realignment Expenses		Cash Payments		Liability Balance at September 30, 2021
Employee severance and benefit costs:
GovDeals	$	—	$	—		$	29	$	(25)	$	4	$	—	$	(4)	$	—
RSCG	—		—			84		(64)		20		—		(20)		—
CAG	414		—			120		(481)		53		5		(58)		—
Corporate & Other	238		—			172		(410)		—		—		—		—
Total employee severance and benefit costs	652		—		—	405		(980)		77		5		(82)		—
Occupancy and other costs:
CAG	169		(169)			—		—		—		—		—		—
Corporate & Other	—		—			—		—		—		—		—		—
Total occupancy and other costs	169		(169)			—		—		—		—		—		—
Total business realignment	$	821	$	(169)		$	405	$	(980)	$	77	$	5	$	(82)	$	—

Segment Information (Tables)

12 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Schedule of segment reporting information, by segment

The following table sets forth certain financial information for the Company's reportable segments:


		Year Ended September 30,
(in thousands)		2021		2020		2019
GovDeals:
	Revenue	$	—	$	—	$	—
	Fee revenue	49,579		32,806		32,936
	Total revenue	49,579		32,806		32,936
	Gross profit	47,030		30,721		30,386

RSCG:
	Revenue	130,790		118,398		110,736
	Fee revenue	28,016		18,093		16,585
	Total revenue	158,806		136,491		127,321
	Gross profit	64,564		49,727		44,967

CAG:
	Revenue	15,361		9,182		36,684
	Fee revenue	24,284		20,299		23,558
	Total revenue	39,645		29,481		60,242
	Gross profit	29,324		22,714		32,679

Machinio:
	Revenue	—		—		—
	Fee revenue	9,559		7,213		5,598
	Total revenue	9,559		7,213		5,598
	Gross profit	8,992		6,813		5,196

Corporate & Other, including elimination adjustments:
	Revenue	—		—		469
	Fee revenue	(57)		(51)		(41)
	Total revenue	(57)		(51)		428
	Gross profit	(57)		(51)		52

Consolidated:
	Revenue	146,151		127,580		147,889
	Fee revenue	111,380		78,360		78,636
	Total revenue	257,531		205,940		226,525
	Gross profit	149,853		109,924		113,280

Reconciliation of revenue from segments to consolidated

The following table presents a reconciliation between gross profit used in the reportable segments and the Company's consolidated results:


		Year Ended September 30,
(in thousands)		2021	2020	2019
Reconciliation:
	Gross profit	149,853	109,924	113,280
	Operating expenses	122,679	113,248	127,739
	Other operating expenses	6	573	5,049
	Interest and other income, net	(411)	(924)	(1,448)
	Income (loss) before income taxes	27,579	(2,973)	(18,060)

Reconciliation of assets from segment to consolidated

Total segment assets reconciled to consolidated amounts are as follows:


	September 30,
(in thousands)	2021		2020
GovDeals	$	148,111	$	102,083
RSCG	84,971		51,230
CAG	94,884		107,529
Machinio	29,806		26,568
Corporate & Other, including elimination adjustments	(102,196)		(90,776)
Total Assets:	$	255,576	$	196,634

Revenue by geographical areas

Revenue attributed to countries that represent a significant portion of consolidated revenues are as follows:


	Year Ended September 30,
(in thousands)	2021		2020		2019
United States	$	214,162	$	180,887	$	191,816
Rest of the world	43,369		25,053		34,709
Total Revenue	$	257,531	$	205,940	$	226,525

Long-lived assets by geographical areas

Total long-lived assets by geographic areas are as follows:


	September 30,
(in thousands)	2021		2020
United States	$	17,261	$	17,358
Rest of the world	373		485
Total Long-lived Assets	$	17,634	$	17,843

Quarterly Results (Unaudited) (Tables)

12 Months Ended

Sep. 30, 2021

Quarterly Financial Information Disclosure [Abstract]

Schedule of unaudited quarterly consolidated statement of operations data

The following table sets forth for the eight most recent quarters the selected unaudited quarterly consolidated statement of operations data. The unaudited quarterly consolidated statement of operations data has been prepared on the same basis as the Company's audited consolidated financial statements and, in the opinion of management, includes all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of this data.


	Three months ended
	Dec. 31, 2019		Mar. 31, 2020		June 30, 2020		Sept. 30, 2020		Dec. 31, 2020		Mar. 31, 2021		June 30, 2021		Sept. 30, 2021
	(in thousands, except share and per share data)
Revenue	$	49,504	$	52,824	$	47,722	$	55,890	$	55,751	$	61,786	$	69,666	$	70,328
Gross profit (excludes depreciation and amortization)	$	25,328	$	26,205	$	25,228	$	33,163	$	33,178	$	35,401	$	41,213	$	40,061
Income (loss) before income taxes	$	(4,738)	$	(4,195)	$	422	$	5,538	$	4,811	$	5,667	$	8,848	$	8,253
Net income (loss)	$	(5,196)	$	(4,238)	$	213	$	5,447	$	4,514	$	5,260	$	8,419	$	32,756
Basic income (loss) per common share	$	(0.15)	$	(0.13)	$	0.01	$	0.16	$	0.14	$	0.16	$	0.25	$	0.98
Diluted income (loss) per common share	$	(0.15)	$	(0.13)	$	0.01	$	0.16	$	0.13	$	0.15	$	0.24	$	0.93
Basic weighted average shares outstanding	33,545,235		33,624,889		33,695,936		33,584,040		33,176,895		33,491,395		33,371,906		33,297,879
Diluted weighted average shares outstanding	33,545,235		33,624,889		33,815,332		33,986,862		34,911,119		35,559,747		35,437,761		35,294,326

Organization (Details)	12 Months Ended
Organization (Details)	Sep. 30, 2021 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reportable segments	4

Summary of Significant Accounting Policies - Inventory (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Accounting Policies [Abstract]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 0.2	$ 0.3

Summary of Significant Accounting Policies - Other Assets (Details) - USD ($) $ in Thousands			12 Months Ended				66 Months Ended
	May 17, 2021	Oct. 10, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2017	Mar. 31, 2021
Receivables with Imputed Interest [Line Items]
Interest income			$ 411	$ 924	$ 1,448
Loss on sale of financing receivable			1,100
Tanager Acquisitions Promissory Note
Receivables with Imputed Interest [Line Items]
Receivable with imputed interest, face amount						$ 12,300
Receivable with imputed interest, term (in years)						5 years
Proceeds from collection of notes receivable	$ 3,500	$ 2,500					$ 7,700
Interest income		$ 400
Receivable with imputed interest, net amount			$ 4,600				$ 4,600

Summary of Significant Accounting Policies - PP&E (Details)	12 Months Ended
	Sep. 30, 2021
Computers and purchased software \| Minimum
Property and Equipment
Estimated useful life	1 year
Computers and purchased software \| Maximum
Property and Equipment
Estimated useful life	5 years
Office/operational equipment \| Minimum
Property and Equipment
Estimated useful life	3 years
Office/operational equipment \| Maximum
Property and Equipment
Estimated useful life	5 years
Furniture and fixtures \| Minimum
Property and Equipment
Estimated useful life	5 years
Furniture and fixtures \| Maximum
Property and Equipment
Estimated useful life	7 years
Internally developed software for internal-use
Property and Equipment
Estimated useful life	5 years
Building
Property and Equipment
Estimated useful life	39 years
Vehicles
Property and Equipment
Estimated useful life	5 years

Summary of Significant Accounting Policies - Intangible Assets and Impairment of Long-Lived Assets (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Accounting Policies [Abstract]
Impairment of long-lived assets	$ 0	$ 0	$ 0

Summary of Significant Accounting Policies - Contract Assets and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Accounting Policies [Abstract]
Contract liability	$ 4.6	$ 3.3
Contract asset	0.6	0.4
Contract liability recognized as revenue	3.2
Contract costs	1.6	0.7
Capitalized contract cost, amortization	$ 0.7	$ 0.4

Summary of Significant Accounting Policies - Concentration (Details)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Supplier Concentration Risk \| Cost of Goods Sold \| Contract with commercial client
Risk Associated with Certain Concentrations
Concentration risk	60.70%	55.10%	43.60%
Maximum
Risk Associated with Certain Concentrations
Term for release of funds to the seller	30 days

Summary of Significant Accounting Policies - Stock-Based Compensation (Details)	12 Months Ended
	Sep. 30, 2021
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Shares and options vesting period	1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Shares and options vesting period	4 years

Summary of Significant Accounting Policies - Advertising Costs and AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Advertising Costs
Advertising costs	$ 3,200	$ 2,600	$ 2,700
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	111,815	116,175	129,654
Current-period other comprehensive (loss) income	771	(1,809)	(1,524)
Balance	135,015	111,815	116,175
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(9,782)	(7,973)	(6,449)
Balance	(9,011)	(9,782)	(7,973)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(8,085)	(8,569)	(7,585)
Current-period other comprehensive (loss) income	601	484	(984)
Balance	(7,484)	(8,085)	(8,569)
Net Change Pension and Other Postretirement Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(1,697)	596	1,136
Current-period other comprehensive (loss) income	170	(2,293)	(540)
Balance	$ (1,527)	$ (1,697)	$ 596

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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+ Details

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net income (loss)	$ 32,756	$ 8,419	$ 5,260	$ 4,514	$ 5,447	$ 213	$ (4,238)	$ (5,196)	$ 50,949	$ (3,774)	$ (19,260)
Denominator:
Basic weighted average shares outstanding	33,297,879	33,371,906	33,491,395	33,176,895	33,584,040	33,695,936	33,624,889	33,545,235	33,333,557	33,612,263	33,062,976
Dilutive impact of stock options, RSUs and RSAs (in shares)									1,690,551	0	0
Diluted weighted average shares outstanding	35,294,326	35,437,761	35,559,747	34,911,119	33,986,862	33,815,332	33,624,889	33,545,235	35,024,108	33,612,263	33,062,976
Basic income (loss) per common share (in dollars per share)	$ 0.98	$ 0.25	$ 0.16	$ 0.14	$ 0.16	$ 0.01	$ (0.13)	$ (0.15)	$ 1.53	$ (0.11)	$ (0.58)
Diluted income (loss) per common share (in usd per share)	$ 0.93	$ 0.24	$ 0.15	$ 0.13	$ 0.16	$ 0.01	$ (0.13)	$ (0.15)	$ 1.45	$ (0.11)	$ (0.58)
Stock options, RSUs and RSAs excluded from income (loss) per diluted share because their effect would have been anti-dilutive									420,454	3,526,055	4,621,199

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

- Definition

Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

+ References

+ Details

DoD Contracts with DLA Disposition Services (Details) - contract	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Significant Contracts
Number of contracts	1
Scrap Contract
Significant Contracts
Adjusted percentage of profit sharing distribution	64.50%
Scrap Contract \| U.S. Department of Defense \| Revenue
Significant Contracts
Concentration risk		7.40%

Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Property and Equipment
Property, plant, and equipment	$ 36,192	$ 32,398
Less: Accumulated depreciation and amortization	(18,558)	(14,555)
Property and equipment, net	17,634	17,843
Computers and purchased software
Property and Equipment
Property, plant, and equipment	1,981	2,060
Internally developed software for internal-use
Property and Equipment
Property, plant, and equipment	18,942	13,860
Office/Operational equipment
Property and Equipment
Property, plant, and equipment	6,373	5,781
Leasehold improvements
Property and Equipment
Property, plant, and equipment	3,244	3,451
Building
Property and Equipment
Property, plant, and equipment	2,158	2,151
Furniture and fixtures
Property and Equipment
Property, plant, and equipment	655	945
Vehicles
Property and Equipment
Property, plant, and equipment	1,129	1,043
Land
Property and Equipment
Property, plant, and equipment	754	754
Construction in progress
Property and Equipment
Property, plant, and equipment	$ 956	$ 2,353

Property and Equipment - Narrative (Details) - USD ($)	12 Months Ended
Property and Equipment - Narrative (Details) - USD ($)	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Property and Equipment
Depreciation and amortization	$ 5,600,000	$ 4,900,000	$ 3,700,000
Impairment of long-lived assets	0	0	0
Internally developed software for internal-use
Property and Equipment
Depreciation and amortization	$ 3,900,000	$ 2,900,000	$ 1,200,000

Leases - Narrative (Details) $ in Millions	Sep. 30, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Lessor, operating lease, lease not yet commenced, assumption and judgment, value of underlying asset, amount	$ 1.9
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms	5 years 3 months 18 days

Leases - Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Leases - Lease Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Finance lease – lease asset amortization	$ 54	$ 69
Finance lease – interest on lease liabilities	22	23
Operating lease cost	5,139	5,264
Operating lease impairment expense	172	0
Short-term lease cost	242	125
Variable lease, cost	1,532	1,463
Sublease income	(184)	(258)
Total net lease cost	$ 6,977	$ 6,686

Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Operating Leases
2022	$ 4,882
2023	4,145
2024	3,076
2024	2,445
2025	1,441
Thereafter	212
Total lease payments	16,201
Less: imputed interest	(1,855)
Total lease liabilities	14,346
Finance Leases
2022	78
2023	79
2024	59
2024	30
2025	30
Thereafter	12
Total lease payments	288
Less: imputed interest	(38)
Total lease liabilities	$ 250
Operating lease, weighted average remaining lease term	3 years 8 months 12 days
Finance lease, weighted average remaining lease term	4 years 1 month 6 days
Operating lease, weighted average discount rate, percent	6.50%
Finance lease, weighted average discount rate, percent	6.70%
Operating lease, liability, statement of financial position	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Finance lease, liability, statement of financial position	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Lessee, Lease, Description [Line Items]
Cash paid for amounts included in operating lease liabilities	$ 4,319	$ 4,771
Payments of the principal portion of finance lease liabilities	42	34	$ 0
Non-cash: lease liabilities arising from new operating lease assets obtained	3,349	12,190
Non-cash: lease liabilities arising from new finance lease assets obtained	137	10
Non-cash: adjustments to lease assets and liabilities	3,756	3,942
Total lease liabilities	$ 14,346
Cumulative Effect, Period of Adoption, Adjustment
Lessee, Lease, Description [Line Items]
Total lease liabilities		$ 12,200

Goodwill - Narrative (Details) - USD ($)	12 Months Ended
Goodwill - Narrative (Details) - USD ($)	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Accumulated goodwill impairment loss	$ 168,600,000	$ 168,600,000
Impairment of long-lived assets	$ 0	$ 0	$ 0

Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Goodwill [Roll Forward]
Balance at the beginning of the period	$ 59,839	$ 59,467	$ 59,819
Translation adjustments	33	372	(352)
Balance at the end of the period	59,872	59,839	59,467
CAG
Goodwill [Roll Forward]
Balance at the beginning of the period	21,550	21,178	21,530
Translation adjustments	33	372	(352)
Balance at the end of the period	21,583	21,550	21,178
GovDeals
Goodwill [Roll Forward]
Balance at the beginning of the period	23,731	23,731	23,731
Translation adjustments	0	0	0
Balance at the end of the period	23,731	23,731	23,731
Machinio
Goodwill [Roll Forward]
Balance at the beginning of the period	14,558	14,558	14,558
Translation adjustments	0	0	0
Balance at the end of the period	$ 14,558	$ 14,558	$ 14,558

Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Intangible Assets
Gross Carrying Amount	$ 8,160	$ 8,129
Accumulated Amortization	(4,707)	(3,371)
Net Carrying Amount	$ 3,453	4,758
Contract intangibles
Intangible Assets
Useful Life (in years)	6 years
Gross Carrying Amount	$ 3,100	3,100
Accumulated Amortization	(1,679)	(1,162)
Net Carrying Amount	$ 1,421	$ 1,938
Contract intangibles \| Weighted Average
Intangible Assets
Useful Life (in years)		6 years
Brand and technology
Intangible Assets
Useful Life (in years)	5 years
Gross Carrying Amount	$ 2,700	$ 2,700
Accumulated Amortization	(1,755)	(1,215)
Net Carrying Amount	945	$ 1,485
Brand and technology \| Weighted Average
Intangible Assets
Useful Life (in years)		5 years
Patent and trademarks
Intangible Assets
Gross Carrying Amount	2,360	$ 2,329
Accumulated Amortization	(1,273)	(994)
Net Carrying Amount	$ 1,087	$ 1,335
Patent and trademarks \| Minimum
Intangible Assets
Useful Life (in years)	7 years
Patent and trademarks \| Maximum
Intangible Assets
Useful Life (in years)	10 years
Patent and trademarks \| Weighted Average
Intangible Assets
Useful Life (in years)		8 years 7 months 6 days

Intangible Assets - Future Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Future expected amortization of intangible assets
2022	$ 1,330
2023	1,187
2024	649
2025	287
2026	0
Thereafter	0
Net Carrying Amount	$ 3,453	$ 4,758

Intangible Assets - Narrative (Details) - USD ($)	12 Months Ended
Intangible Assets - Narrative (Details) - USD ($)	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense	$ 1,300,000	$ 1,300,000	$ 1,300,000
Impairment of long-lived assets	$ 0	$ 0	$ 0

The 401(k) Benefit Plan (Details) - USD ($) $ in Millions	12 Months Ended
The 401(k) Benefit Plan (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Retirement Benefits [Abstract]
Amount contributed and recorded expense under the 401(k) Benefit Plan	$ 1.1	$ 0.9	$ 1.6

Income Taxes - Provision (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes - Provision (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Current tax provision (benefit):
U.S. Federal	$ 0	$ 0	$ 0
State	293	382	453
Foreign	847	313	611
Current income tax expense	1,140	695	1,064
Deferred tax provision (benefit):
U.S. Federal	(23,315)	74	103
State	(1,252)	(27)	(31)
Foreign	57	59	64
Total deferred tax (benefit) expense	(24,510)	106	136
Total (benefit) provision	$ (23,370)	$ 801	$ 1,200

Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Deferred tax assets:
Net operating losses—Foreign	$ 13,593	$ 12,709
Net operating losses—U.S.	31,456	35,126
Accrued vacation and bonus	678	571
Inventory capitalization	219	54
Allowance for doubtful accounts	96	65
Stock compensation expense	1,415	1,804
Operating lease assets	3,605	2,236
Depreciation	2,339	1,266
Other	897	893
Total deferred tax assets before valuation allowance	54,298	54,724
Less: valuation allowance	(13,813)	(41,788)
Net deferred tax assets	40,485	12,936
Deferred tax liabilities:
Amortization of intangibles	107	291
Amortization of goodwill	7,322	6,666
Capitalized costs	5,602	4,470
Operating lease liabilities	3,394	2,059
Pension liability	238	138
Total deferred tax liabilities	16,663	13,624
Net deferred taxes	$ 23,822
Net deferred taxes		$ (688)

Income Taxes - Reconciliation (Details)	12 Months Ended
Income Taxes - Reconciliation (Details)	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Reconciliation of the U.S. federal statutory rate to the effective rate for continuing operations
U.S. statutory rate (as a percent)	21.00%	21.00%	21.00%
Stock based compensation (as a percent)	(14.10%)	(14.90%)	(2.00%)
Non deductible compensation expense (as a percent)	5.50%	(6.00%)	(0.60%)
Permanent items (as a percent)	0.10%	(1.10%)	(4.20%)
State taxes (as a percent)	3.00%	(13.20%)	(0.40%)
Net foreign rate differential (as a percent)	0.50%	(0.80%)	(0.60%)
Unrecognized tax benefits (as a percent)	0.10%	5.10%	(1.50%)
Change in valuation allowance (as a percent)	(98.90%)	9.90%	(22.50%)
Write-down of deferred tax assets on share-based stock compensation (as a percent)	0.70%	(12.30%)	(7.90%)
Write-down of deferred tax assets on net operating loss (as a percent)	(0.028)	(0.159)	0.106
Other (as a percent)	0.20%	1.30%	1.50%
Effective rate	(84.70%)	(26.90%)	(6.60%)

Income Taxes - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Jul. 10, 2018	Sep. 30, 2021	Sep. 30, 2020
Net operating loss (NOL) carryforwards
Deferred tax assets related to available federal and state NOL carryforwards		$ 23,500	$ 27,700
Net operating losses—Foreign		13,593	12,709
NOL's subject to expiration		400
Valuation allowance		13,813	41,788
Deferred tax assets, amount expected to be realized		27,900
Increase in valuation allowance		27,900
Alternative minimum tax, refund		1,700
Undistributed foreign earnings		6,900
Cash and cash equivalents held overseas on which taxes would be incurred upon repatriation		22,400	$ 19,500
Unrecognized tax benefits, decrease resulting from foreign currency translation		100
Machinio
Net operating loss (NOL) carryforwards
Percentage acquired	100.00%
Consideration paid	$ 19,900
Acquisition, deferred tax liability	$ 700
Acquisition, net operating loss		1,400
Machinio \| Deferred Tax Asset Related To Business Acquisition
Net operating loss (NOL) carryforwards
Increase in valuation allowance		$ 700

Income Taxes - CarryForwards (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Reconciliation of unrecognized tax benefits
Beginning balance	$ 123	$ 273	$ 0
Additions based on positions related to the current year	20	0	0
Additions for tax positions of prior years	0	0	273
Reductions for tax positions of prior years	0	(150)	0
Settlements	0	0	0
Ending balance	$ 143	$ 123	$ 273

Equity Transactions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Dec. 06, 2021	May 03, 2021	Mar. 08, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance	19,100,000			19,100,000
Reserve shares counted per share granted from fungible share pool	1.5			1.5
Remaining shares reserved for issuance	1,993,244			1,993,244
Stock compensation awards, total liability	$ 500			$ 500	$ 100
Stock compensation awards, current portion	$ 300			$ 300	$ 100
Weighted average grant date fair value of options granted (in dollars per share)				$ 4.81	$ 2.66	$ 2.70
Intrinsic value of options exercised				$ 15,036	$ 100	$ 300
Shares repurchased			957,079
Common stock repurchases			$ 16,100	$ 31,143	3,983
Remaining repurchase amount					6,100
Stock repurchase program, authorized amount									$ 10,000
Stock redeemed or called during period (in shares)		0		82,612
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to be repurchased							20,000,000
May 3, 2021 Stock Repurchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased	634,884
Common stock repurchases				$ 15,000
Remaining repurchase amount								$ 15,000
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options not yet exercisable (in shares)	1,366,877			1,366,877
Options, service-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options not yet exercisable (in shares)	853,553			853,553
Unrecognized compensation cost	$ 2,700			$ 2,700
Weighted average vesting period for unrecognized compensation cost				2 years 9 months 18 days
Options, service-based \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
Stock options, expiration term				5 years
Options, service-based \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Stock options, expiration term				10 years
Options, service and performance or market based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options not yet exercisable (in shares)	513,324			513,324
Restricted stock units and restricted stock awards, service based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares	463,300			463,300
Restricted stock units and restricted stock awards, service and performance or market based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares	454,081			454,081
Restricted stock unit, service based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average vesting period for unrecognized compensation cost				2 years 10 months 24 days
Unrecognized compensation cost, excluding options	$ 3,600			$ 3,600
Restricted stock unit, service based \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
Restricted stock unit, service based \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares	30,000			30,000
Cash paid to settle stock appreciation rights				$ 400	$ 600	$ 500
Stock appreciation rights, weighted-average fair value (in dollars per share)	$ 18.86			$ 18.86	$ 0.63
Stock appreciation rights, service based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average vesting period for unrecognized compensation cost				1 year 3 months 18 days
Unrecognized compensation cost, excluding options	$ 300			$ 300
Stock options, RSUs and RSAs, performance based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average vesting period for unrecognized compensation cost				3 years
Unrecognized compensation costs	400			$ 400
Stock options, RSUs and SARS, market based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Unrecognized compensation cost	$ 900			$ 900
Weighted average vesting period for unrecognized compensation cost				6 months
Average share price term				20 days

Equity Transactions - Stock Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock compensation expense	$ 6,947	$ 5,660	$ 6,508
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock compensation expense	3,117	2,054	1,530
RSUs & RSAs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock compensation expense	2,977	3,635	4,496
SARs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock compensation expense	$ 853	$ (29)	$ 482

Equity Transactions - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Stock Options
Outstanding as of beginning of period (in shares)	3,075,914
Granted (in shares)	1,108,273
Exercised (in shares)	(1,033,529)
Forfeited (in shares)	(272,720)
Expired (in shares)	(33,653)
Outstanding as of end of period (in shares)	2,844,285	3,075,914
Vested and expected to vest as of end of period (in shares)	2,810,202
Exercisable as of end of period (in shares)	1,477,408
Weighted- Average Exercise Price
Outstanding as of beginning of period (in dollars per share)	$ 8.54
Granted (in dollars per share)	10.60
Exercised (in dollars per share)	6.59
Forfeited (in dollars per share)	7.82
Expired (in dollars per share)	15.35
Outstanding as of end of period (in dollars per share)	10.04	$ 8.54
Vested and expected to vest as of end of period (in dollars per share)	9.94
Exercisable as of end of period (in dollars per share)	$ 10.37
Weighted- Average Remaining Contractual Term (years)
Outstanding, weighted-average remaining contractual term	6 years 1 month 20 days	6 years 1 month 28 days
Vested and expected to vest, weighted average remaining contractual term	6 years 1 month 6 days
Exercisable, weighted-average remaining contractual term	4 years 2 months 26 days
Aggregate Intrinsic Value
Outstanding as of beginning of period, aggregate intrinsic value	$ 2,841
Granted, aggregate intrinsic value	0
Exercised, aggregate intrinsic value	15,036	$ 100	$ 300
Forfeited, aggregate intrinsic value	2,547
Expired, aggregate intrinsic value	108
Outstanding as of end of period, aggregate intrinsic value	34,877	$ 2,841
Vested and expected to vest, aggregate intrinsic value	34,775
Exercisable, aggregate intrinsic value	$ 18,589

Equity Transactions - Fair Value (Details)	12 Months Ended
Equity Transactions - Fair Value (Details)	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Stock options
Fair value assumptions
Dividend yield	0.00%	0.00%	0.00%
Expected volatility, minimum	51.00%	46.50%	47.80%
Expected volatility, maximum	55.90%	51.00%	53.70%
Risk free interest rate, minimum	0.40%	0.50%	1.90%
Risk free interest rate, maximum	0.80%	1.50%	2.80%
Expected term		7 years 4 months 24 days	7 years 1 month 6 days
Stock options \| Minimum
Fair value assumptions
Expected term	4 years 7 months 6 days	4 years 7 months 6 days
Stock options \| Maximum
Fair value assumptions
Expected term	7 years 7 months 6 days
Stock appreciation rights
Fair value assumptions
Dividend yield	0.00%	0.00%	0.00%
Expected volatility, minimum	78.30%	55.00%	38.20%
Expected volatility, maximum	78.30%	68.80%	48.80%
Risk free interest rate, minimum	0.10%	0.10%	1.30%
Risk free interest rate, maximum	0.10%	0.10%	1.70%
Stock appreciation rights \| Minimum
Fair value assumptions
Expected term	1 year 3 months 18 days	0 years	1 month 6 days
Stock appreciation rights \| Maximum
Fair value assumptions
Expected term	1 year 3 months 18 days	2 years 3 months 18 days	3 years 3 months 18 days
Stock options, RSUs and SARS, market based
Fair value assumptions
Dividend yield	0.00%	0.00%	0.00%
Expected volatility, minimum	51.60%	45.20%	45.50%
Expected volatility, maximum	54.60%	54.90%	55.00%
Risk free interest rate, minimum	0.30%	0.10%	1.50%
Risk free interest rate, maximum	0.90%	1.70%	2.90%
Stock options, RSUs and SARS, market based \| Minimum
Fair value assumptions
Expected holding period	31.70%	30.70%	25.90%
Stock options, RSUs and SARS, market based \| Maximum
Fair value assumptions
Expected holding period	100.00%	100.00%	100.00%

Equity Transactions - Restricted Stock Units and Restricted Stock Awards (Details) - RSUs & RSAs - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
RSU & RSA
Outstanding as of beginning of period (in shares)	1,545,285
Granted (in shares)	330,545
Exercised (in shares)	(811,773)
Forfeited (in shares)	(146,676)
Outstanding as of end of period (in shares)	917,381	1,545,285
Expected to vest as of end of period (in shares)	666,092
Weighted- Average Grant Date Fair Value
Outstanding as of beginning of period (in dollars per share)	$ 6.84
Granted (in dollars per share)	14.08
Exercised (in dollars per share)	6.78
Forfeited (in dollars per share)	8.98
Outstanding as of end of period (in dollars per share)	9.15	$ 6.84
Expected to vest as of end of period (in dollars per share)	$ 10.17
Additional Disclosures
Outstanding, weighted-average remaining contractual term	1 year 11 months 23 days	1 year 10 months 6 days
Expected to vest as of end of period, weighted-average remaining contractual term	2 years 4 months 6 days
Aggregate Fair Value
Outstanding as of beginning of period, aggregate fair value	$ 11,528
Granted, aggregate fair value	4,653
Exercised, aggregate fair value	13,780
Forfeited, aggregate fair value	2,688
Outstanding as of end of period, aggregate fair value	19,825	$ 11,528
Expected to vest as of end of period, aggregate fair value	$ 14,394

Equity Transactions - Stock Appreciation Rights Activity (Details) - Stock appreciation rights - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
SARs
Outstanding as of beginning of period (in shares)	160,810
Exercised (in shares)	(45,084)
Forfeited (in shares)	(73,681)
Outstanding as of end of period (in shares)	42,045	160,810
Vested and expected to vest as of September 30, 2019 (in shares)	42,045
Exercisable as of September 30, 2019 (in shares)	12,045
Weighted- Average Exercise Price
Outstanding as of beginning of period (in dollars per share)	$ 8.45
Exercised (in dollars per share)	8.45
Forfeited (in dollars per share)	9.80
Outstanding as of end of period (in dollars per share)	6.11	$ 8.45
Vested and expected to vest as of end of period (in dollars per share)	6.11
Exercisable as of end of period (in dollars per share)	$ 6.11
Weighted- Average Remaining Contractual Term (years)
Outstanding, weighted-average remaining contractual term	1 year 3 months 3 days	1 year
Vested and expected to vest as of end of period, weighted-average remaining contractual term	1 year 3 months 3 days
Exercisable as of end of period, weighted average remaining contractual term	1 year 3 months 3 days
Aggregate Intrinsic Value
Outstanding as of beginning of period, aggregate intrinsic value	$ 96
Exercised, aggregate intrinsic value	443
Forfeited, aggregate intrinsic value	213
Outstanding as of end of period, aggregate intrinsic value	652	$ 96
Vested and expected to vest as of end of period, aggregate intrinsic value	652
Exercisable as of end of period, aggregate intrinsic value	$ 187

Fair Value Measurement - Narrative (Details) - USD ($)	Sep. 30, 2021	Sep. 30, 2020
Fair value measurement
Money market funds, at carrying value	$ 40,000,000	$ 30,000,000
Nonrecurring
Fair value measurement
Fair value, asset (liability)	$ 0	$ 0

Defined Benefit Pension Plan - Additional Information (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2021 GBP (£)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Defined benefit pension plan
Defined benefit plan, funded status of plan	$ 1,253		$ 724
Benefit obligation	$ 26,955		$ 26,047	$ 23,240
Defined benefit plan long term rate of improvement (as a percentage)	1.30%
Maximum
Defined benefit pension plan
Expected contributions \| £		£ 10,000,000
Males
Defined benefit pension plan
Defined benefit plan mortality rate (as a percentage)	105.00%
Females
Defined benefit pension plan
Defined benefit plan mortality rate (as a percentage)	105.00%

Defined Benefit Pension Plan - Net Period Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Retirement Benefits [Abstract]
Interest cost	$ 438	$ 431	$ 618
Expected return on plan assets	(793)	(797)	(965)
Amortization of prior service cost	21	19	0
Total net periodic benefit	$ (334)	$ (347)	$ (347)

Defined Benefit Pension Plan - Reconciliation of Benefit Obligations, Plan Assets, and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Change in benefit obligation
Beginning balance	$ 26,047	$ 23,240
Interest cost	438	431	$ 618
Benefits paid	(781)	(597)
Actuarial loss/(gain)	152	1,803
Foreign currency exchange rate changes	1,099	1,170
Ending balance	26,955	26,047	23,240
Change in plan assets
Beginning balance at fair value	26,771	25,779
Actual return on plan assets	1,077	297
Benefits paid	(781)	(597)
Foreign currency exchange rate changes	1,141	1,292
Ending balance at fair value	28,208	26,771	$ 25,779
Overfunded status of the Scheme	$ 1,253	$ 724

Defined Benefit Pension Plan - Qualified Defined Benefit Pension Plan, Net of Taxes, and the Related Foreign Currency Translation Adjustments (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Accumulated OCI
Accumulated other comprehensive (loss) income at beginning of year	$ (1,971)	$ 303
Net actuarial gain (loss)	170	(2,293)
Foreign currency translation adjustments	(84)	19
Accumulated other comprehensive loss at end of year	$ (1,885)	$ (1,971)

Defined Benefit Pension Plan - Actuarial Assumptions (Details)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Retirement Benefits [Abstract]
Discount rate to determine net periodic (benefit) cost	1.60%	1.80%
Expected return on plan assets	2.82%	3.00%
Discount rate to determine benefit obligations	2.00%	1.60%
Rate of increases to deferred CPI linked benefits	3.10%	2.50%
Rate of increases to deferred RPI linked benefits	3.60%	3.00%

Defined Benefit Pension Plan - Pension Plan (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Retirement Benefits [Abstract]
2022	$ 904
2023	789
2024	1,213
2025	1,052
2027	1,010
2027 through 2030	4,390
Total	$ 9,358

Defined Benefit Pension Plan - Expected Return on Assets (Details)	Sep. 30, 2021	Sep. 30, 2020
Defined benefit pension plan
Total	100.00%	100.00%
Equity securities
Defined benefit pension plan
Total	21.00%	20.60%
Corporate bonds
Defined benefit pension plan
Total	53.00%	53.00%
Diversified fund
Defined benefit pension plan
Total	26.00%	26.00%
Cash
Defined benefit pension plan
Total	0.00%	0.40%

Defined Benefit Pension Plan - Fair Value Estimates (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Defined benefit pension plan
Fair values	$ 28,208	$ 26,771	$ 25,779
Total
Defined benefit pension plan
Fair values	28,208	26,771
Level 1
Defined benefit pension plan
Fair values	191	94
Level 2
Defined benefit pension plan
Fair values	28,017	26,677
Level 3
Defined benefit pension plan
Fair values	0	0
Equity securities \| Total
Defined benefit pension plan
Fair values	5,860	5,526
Equity securities \| Level 1
Defined benefit pension plan
Fair values	0	0
Equity securities \| Level 2
Defined benefit pension plan
Fair values	5,860	5,526
Equity securities \| Level 3
Defined benefit pension plan
Fair values	0	0
Corporate bonds \| Total
Defined benefit pension plan
Fair values	14,878	14,194
Corporate bonds \| Level 1
Defined benefit pension plan
Fair values	0	0
Corporate bonds \| Level 2
Defined benefit pension plan
Fair values	14,878	14,194
Corporate bonds \| Level 3
Defined benefit pension plan
Fair values	0	0
Diversified fund \| Total
Defined benefit pension plan
Fair values	7,279	6,957
Diversified fund \| Level 1
Defined benefit pension plan
Fair values	0	0
Diversified fund \| Level 2
Defined benefit pension plan
Fair values	7,279	6,957
Diversified fund \| Level 3
Defined benefit pension plan
Fair values	0	0
Cash \| Total
Defined benefit pension plan
Fair values	191	94
Cash \| Level 1
Defined benefit pension plan
Fair values	191	94
Cash \| Level 2
Defined benefit pension plan
Fair values	0	0
Cash \| Level 3
Defined benefit pension plan
Fair values	$ 0	$ 0

Business Realignment Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2018
Business realignment expenses rollforward
Liability balance, beginning	$ 77	$ 821
Business Realignment Expenses	5	405
Cash Payments	(82)	(980)
Liability balance, ending	0	$ 77
Accounting Standards Update		us-gaap:AccountingStandardsUpdate201602Member	us-gaap:AccountingStandardsUpdate201609Member
Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		$ (169)
Employee severance and benefit costs
Business realignment expenses rollforward
Liability balance, beginning	77	652
Business Realignment Expenses	5	405
Cash Payments	(82)	(980)
Liability balance, ending	0	77
Employee severance and benefit costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		0
Occupancy and other costs
Business realignment expenses rollforward
Liability balance, beginning	0	169
Business Realignment Expenses	0	0
Cash Payments	0	0
Liability balance, ending	0	0
Occupancy and other costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		(169)
GovDeals \| Employee severance and benefit costs
Business realignment expenses rollforward
Liability balance, beginning	4	0
Business Realignment Expenses	0	29
Cash Payments	(4)	(25)
Liability balance, ending	0	4
GovDeals \| Employee severance and benefit costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		0
RSCG \| Employee severance and benefit costs
Business realignment expenses rollforward
Liability balance, beginning	20	0
Business Realignment Expenses	0	84
Cash Payments	(20)	(64)
Liability balance, ending	0	20
RSCG \| Employee severance and benefit costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		0
CAG \| Employee severance and benefit costs
Business realignment expenses rollforward
Liability balance, beginning	53	414
Business Realignment Expenses	5	120
Cash Payments	(58)	(481)
Liability balance, ending	0	53
CAG \| Employee severance and benefit costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		0
CAG \| Occupancy and other costs
Business realignment expenses rollforward
Liability balance, beginning	0	169
Business Realignment Expenses	0	0
Cash Payments	0	0
Liability balance, ending	0	0
CAG \| Occupancy and other costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		(169)
Corporate & Other \| Employee severance and benefit costs
Business realignment expenses rollforward
Liability balance, beginning	0	238
Business Realignment Expenses	0	172
Cash Payments	0	(410)
Liability balance, ending	0	0
Corporate & Other \| Employee severance and benefit costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		0
Corporate & Other \| Occupancy and other costs
Business realignment expenses rollforward
Liability balance, beginning	0	0
Business Realignment Expenses	0	0
Cash Payments	0	0
Liability balance, ending	$ 0	0
Corporate & Other \| Occupancy and other costs \| Cumulative Effect, Period of Adoption, Adjustment
Business realignment expenses rollforward
Liability balance, beginning		$ 0

Segment Information - Narrative (Details)	12 Months Ended
Segment Information - Narrative (Details)	Sep. 30, 2021 segment
Segment Reporting [Abstract]
Reportable segments	4

Segment Information - Schedule of Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 70,328	$ 69,666	$ 61,786	$ 55,751	$ 55,890	$ 47,722	$ 52,824	$ 49,504	$ 257,531	$ 205,940	$ 226,525
Gross profit	$ 40,061	$ 41,213	$ 35,401	$ 33,178	$ 33,163	$ 25,228	$ 26,205	$ 25,328	149,853	109,924	113,280
Operating Segments \| GovDeals
Segment Reporting Information [Line Items]
Total revenue									49,579	32,806	32,936
Gross profit									47,030	30,721	30,386
Operating Segments \| RSCG
Segment Reporting Information [Line Items]
Total revenue									158,806	136,491	127,321
Gross profit									64,564	49,727	44,967
Operating Segments \| CAG
Segment Reporting Information [Line Items]
Total revenue									39,645	29,481	60,242
Gross profit									29,324	22,714	32,679
Operating Segments \| Machinio
Segment Reporting Information [Line Items]
Total revenue									9,559	7,213	5,598
Gross profit									8,992	6,813	5,196
Corporate & Other
Segment Reporting Information [Line Items]
Total revenue									(57)	(51)	428
Gross profit									(57)	(51)	52
Revenue
Segment Reporting Information [Line Items]
Total revenue									146,151	127,580	147,889
Revenue \| Operating Segments \| GovDeals
Segment Reporting Information [Line Items]
Total revenue									0	0	0
Revenue \| Operating Segments \| RSCG
Segment Reporting Information [Line Items]
Total revenue									130,790	118,398	110,736
Revenue \| Operating Segments \| CAG
Segment Reporting Information [Line Items]
Total revenue									15,361	9,182	36,684
Revenue \| Operating Segments \| Machinio
Segment Reporting Information [Line Items]
Total revenue									0	0	0
Revenue \| Corporate & Other
Segment Reporting Information [Line Items]
Total revenue									0	0	469
Fee revenue
Segment Reporting Information [Line Items]
Total revenue									111,380	78,360	78,636
Fee revenue \| Operating Segments \| GovDeals
Segment Reporting Information [Line Items]
Total revenue									49,579	32,806	32,936
Fee revenue \| Operating Segments \| RSCG
Segment Reporting Information [Line Items]
Total revenue									28,016	18,093	16,585
Fee revenue \| Operating Segments \| CAG
Segment Reporting Information [Line Items]
Total revenue									24,284	20,299	23,558
Fee revenue \| Operating Segments \| Machinio
Segment Reporting Information [Line Items]
Total revenue									9,559	7,213	5,598
Fee revenue \| Corporate & Other
Segment Reporting Information [Line Items]
Total revenue									$ (57)	$ (51)	$ (41)

Segment Information - Reconciliation from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting [Abstract]
Gross profit	$ 40,061	$ 41,213	$ 35,401	$ 33,178	$ 33,163	$ 25,228	$ 26,205	$ 25,328	$ 149,853	$ 109,924	$ 113,280
Operating expenses									122,679	113,248	127,739
Other operating expenses									6	573	5,049
Interest and other income, net									(411)	(924)	(1,448)
Income (loss) before income taxes	$ 8,253	$ 8,848	$ 5,667	$ 4,811	$ 5,538	$ 422	$ (4,195)	$ (4,738)	$ 27,579	$ (2,973)	$ (18,060)

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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+ Details

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

Segment Information - Schedule of Total Segment Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Assets	$ 255,576	$ 196,634
Operating Segments \| GovDeals
Segment Reporting Information [Line Items]
Assets	148,111	102,083
Operating Segments \| RSCG
Segment Reporting Information [Line Items]
Assets	84,971	51,230
Operating Segments \| CAG
Segment Reporting Information [Line Items]
Assets	94,884	107,529
Operating Segments \| Machinio
Segment Reporting Information [Line Items]
Assets	29,806	26,568
Corporate & Other, including elimination adjustments
Segment Reporting Information [Line Items]
Assets	$ (102,196)	$ (90,776)

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details

Segment Information - Schedule of Revenues by Country (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 70,328	$ 69,666	$ 61,786	$ 55,751	$ 55,890	$ 47,722	$ 52,824	$ 49,504	$ 257,531	$ 205,940	$ 226,525
United States
Segment Reporting Information [Line Items]
Total revenue									214,162	180,887	191,816
Rest of the world
Segment Reporting Information [Line Items]
Total revenue									$ 43,369	$ 25,053	$ 34,709

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Segment Information - Schedule of Total Long-Lived Assets by Geographical Location (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Long-lived assets	$ 17,634	$ 17,843
United States
Segment Reporting Information [Line Items]
Long-lived assets	17,261	17,358
Rest of the world
Segment Reporting Information [Line Items]
Long-lived assets	$ 373	$ 485

Subsequent Events (Details) - Subsequent Event - Private Placement - Bid4Assets $ in Millions	Nov. 01, 2021 USD ($)
Subsequent Event [Line Items]
Purchase price, net	$ 15.0
Working capital assumption	0.3
Eligible earn out consideration amount	$ 37.5

Quarterly Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Unaudited quarterly consolidated statement of operations
Revenue	$ 70,328	$ 69,666	$ 61,786	$ 55,751	$ 55,890	$ 47,722	$ 52,824	$ 49,504	$ 257,531	$ 205,940	$ 226,525
Gross profit	40,061	41,213	35,401	33,178	33,163	25,228	26,205	25,328	149,853	109,924	113,280
Income (loss) before income taxes	8,253	8,848	5,667	4,811	5,538	422	(4,195)	(4,738)	27,579	(2,973)	(18,060)
Net income (loss)	$ 32,756	$ 8,419	$ 5,260	$ 4,514	$ 5,447	$ 213	$ (4,238)	$ (5,196)	$ 50,949	$ (3,774)	$ (19,260)
Unaudited quarterly consolidated statement of operations
Basic income (loss) per common share (in dollars per share)	$ 0.98	$ 0.25	$ 0.16	$ 0.14	$ 0.16	$ 0.01	$ (0.13)	$ (0.15)	$ 1.53	$ (0.11)	$ (0.58)
Diluted income (loss) per common share (in usd per share)	$ 0.93	$ 0.24	$ 0.15	$ 0.13	$ 0.16	$ 0.01	$ (0.13)	$ (0.15)	$ 1.45	$ (0.11)	$ (0.58)
Basic weighted average shares outstanding	33,297,879	33,371,906	33,491,395	33,176,895	33,584,040	33,695,936	33,624,889	33,545,235	33,333,557	33,612,263	33,062,976
Diluted weighted average shares outstanding	35,294,326	35,437,761	35,559,747	34,911,119	33,986,862	33,815,332	33,624,889	33,545,235	35,024,108	33,612,263	33,062,976

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Activity in valuation and qualifying accounts
Balance at beginning of period	$ 300
Balance at end of period	200	$ 300
Deferred tax valuation allowance (deducted from net deferred tax assets)
Activity in valuation and qualifying accounts
Balance at beginning of period	41,788	41,909	$ 39,337
Charged (credited) to expense	(27,975)	(121)	2,572
Reductions	0	0	0
Balance at end of period	13,813	41,788	41,909
Allowance for doubtful accounts (deducted from accounts receivable)
Activity in valuation and qualifying accounts
Balance at beginning of period	389	291	337
Charged (credited) to expense	297	200	178
Reductions	(196)	(102)	(224)
Balance at end of period	490	389	291
Provision for inventory allowance (deducted from inventory)
Activity in valuation and qualifying accounts
Balance at beginning of period	300	331	503
Charged (credited) to expense	174	328	331
Reductions	(300)	(359)	(503)
Balance at end of period	$ 174	$ 300	$ 331