Geospace Technologies (GEOS) 10-K 18 Nov 22 2022 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Oct. 31, 2022	Mar. 31, 2022
Cover [Abstract]
Entity Registrant Name	GEOSPACE TECHNOLOGIES CORP
Entity Central Index Key	0001001115
Document Type	10-K
Document Period End Date	Sep. 30, 2022
Amendment Flag	false
Document Fiscal Year Focus	2022
Title of 12(b) Security	Common Stock
Trading Symbol	GEOS
Security Exchange Name	NASDAQ
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--09-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Document Annual Report	true
Document Transition Report	false
Entity Public Float			$ 71
Entity Common Stock, Shares Outstanding		13,021,241
Entity Incorporation, State or Country Code	TX
Entity File Number	001-13601
Entity Tax Identification Number	76-0447780
Entity Address, Address Line One	7007 Pinemont Drive
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77040-6601
City Area Code	713
Local Phone Number	986-4444
Documents Incorporated by Reference	Portions of the definitive proxy statement for the Registrant’s 2023 Annual Meeting of Stockholders are incorporated by reference into Part III of this report.
Auditor Firm ID	49
Auditor Name	RSM US LLP
Auditor Location	Houston, Texas, USA

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 16,109	$ 14,066
Short-term investments	894	9,496
Trade accounts and financing receivables, net	20,886	17,159
Unbilled receivables		1,051
Inventories, net	19,995	16,196
Prepaid expenses and other current assets	2,077	2,062
Total current assets	59,961	60,030
Non-current financing receivables		2,938
Non-current inventories, net	12,526	18,103
Rental equipment, net	28,199	38,905
Property, plant and equipment, net	26,598	29,983
Operating right-of-use assets	957	1,191
Goodwill	736	5,072
Other intangible assets, net	5,573	7,250
Other non-current assets	506	457
Total assets	135,056	163,929
Current liabilities:
Accounts payable trade	5,595	6,391
Contingent consideration	175	807
Operating lease liabilities	241	225
Other current liabilities	6,616	7,799
Total current liabilities	12,627	15,222
Non-current contingent consideration		5,210
Non-current operating lease liabilities	769	1,009
Deferred tax liabilities, net	13	31
Total liabilities	13,409	21,472
Commitments and contingencies (Note 18)
Stockholders’ equity:
Preferred stock, 1,000,000 shares authorized, no shares issued and outstanding
Common stock, $.01 par value, 20,000,000 shares authorized, 13,863,233 and 13,738,971 shares issued, respectively; and 13,021,241 and 12,969,542 shares outstanding, respectively	139	137
Additional paid-in capital	94,667	92,935
Retained earnings	49,654	72,510
Accumulated other comprehensive loss	(15,313)	(16,320)
Treasury stock, at cost, 841,992 and 769,429 shares, respectively	(7,500)	(6,805)
Total stockholders’ equity	121,647	142,457
Total liabilities and stockholders’ equity	$ 135,056	$ 163,929

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2022	Sep. 30, 2021
Statement of Financial Position [Abstract]
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	13,863,233	13,738,971
Common stock, shares outstanding	13,021,241	12,969,542
Treasury stock, shares	841,992	769,429

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Revenue:
Products	$ 64,109	$ 75,864
Revenue, Product and Service [Extensible List]	Product	Product
Rental equipment	$ 25,144	$ 19,000
Total revenue	89,253	94,864
Cost of revenue:
Products	$ 51,649	$ 58,884
Revenue, Product and Service [Extensible List]	Product	Product
Rental equipment	$ 19,561	$ 19,686
Total cost of revenue	71,210	78,570
Gross profit	18,043	16,294
Operating expenses:
Selling, general and administrative	23,482	21,926
Research and development	18,104	14,839
Goodwill impairment	4,336
Change in estimated fair value of contingent consideration	(5,035)	(3,524)
Bad debt expense (recovery)	292	(76)
Total operating expenses	41,179	33,165
Loss from operations	(23,136)	(16,871)
Other income (expense):
Interest expense	(65)
Interest income	976	1,441
Gain (loss) on investments, net	(22)	1,993
Foreign exchange losses, net	(397)	(41)
Other, net	(39)
Total other income, net	453	3,393
Loss before income taxes	(22,683)	(13,478)
Income tax expense	173	578
Net loss	$ (22,856)	$ (14,056)
Loss per common share:
Basic	$ (1.76)	$ (1.05)
Diluted	$ (1.76)	$ (1.05)
Weighted average common shares outstanding:
Basic	12,987,996	13,358,930
Diluted	12,987,996	13,358,930

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (22,856)	$ (14,056)
Other comprehensive income (loss):
Change in unrealized losses on available-for-sale securities, net of tax		(15)
Foreign currency translation adjustments	1,007	393
Total other comprehensive income, net	1,007	378
Total comprehensive loss	$ (21,849)	$ (13,678)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning Balance at Sep. 30, 2020	$ 160,970	$ 137	$ 90,965	$ 86,566	$ (16,698)
Beginning Balance, Shares at Sep. 30, 2020		13,670,639
Net loss	(14,056)			(14,056)
Other comprehensive income	378				378
Issuance of common stock pursuant to the vesting of restricted stock units, Shares		70,832
Forfeiture of restricted stock, Shares		(2,500)
Purchase of treasury stock	(6,805)					$ (6,805)
Purchase of treasury stock, Shares		(769,429)
Stock-based compensation	1,970		1,970
Ending Balance at Sep. 30, 2021	$ 142,457	$ 137	92,935	72,510	(16,320)	(6,805)
Ending Balance, Shares at Sep. 30, 2021	12,969,542	12,969,542
Net loss	$ (22,856)			(22,856)
Other comprehensive income	1,007				1,007
Issuance of common stock pursuant to the vesting of restricted stock units		$ 2	(2)
Issuance of common stock pursuant to the vesting of restricted stock units, Shares		124,262
Purchase of treasury stock	(695)					(695)
Purchase of treasury stock, Shares		(72,563)
Stock-based compensation	1,734		1,734
Ending Balance at Sep. 30, 2022	$ 121,647	$ 139	$ 94,667	$ 49,654	$ (15,313)	$ (7,500)
Ending Balance, Shares at Sep. 30, 2022	13,021,241	13,021,241

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net loss	$ (22,856)	$ (14,056)
Adjustments to reconcile net loss to net cash used in operating activities:
Deferred income tax expense (benefit)	(17)	3
Rental equipment depreciation	13,740	15,075
Property, plant and equipment depreciation	4,143	3,956
Amortization of intangible assets	1,677	1,746
Goodwill impairment expense	4,336
Property, plant and equipment impairment expense	401
Accretion of discounts on short-term investments	96	96
Stock-based compensation expense	1,734	1,970
Bad debt expense (recovery)	292	(76)
Inventory obsolescence expense	3,222	3,001
Change in estimated fair value of contingent consideration	(5,035)	(3,524)
Gross profit from sale of used rental equipment	(11,061)	(6,678)
Gain on disposal of property, plant and equipment	(54)
Realized loss (gain) on sale of investments, net	22	(1,993)
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivables	1,751	(2,973)
Unbilled receivables	1,051	(1,051)
Inventories	(2,357)	(7,674)
Other assets	349	5,368
Accounts payable trade	(786)	4,712
Other liabilities	(683)	(5,074)
Net cash used in operating activities	(10,035)	(7,172)
Cash flows from investing activities:
Purchase of property, plant and equipment	(1,130)	(3,188)
Investment in rental equipment	(4,832)	(2,121)
Proceeds from the sale of property, plant and equipment	54	16
Proceeds from the sale of used rental equipment	11,583	10,626
Purchase of short-term investments	(450)	(12,544)
Proceeds from the sale of short-term investments	8,924	3,170
Business acquisition, net of acquired cash		(1,346)
Proceeds from sale of investment in debt security		2,069
Net cash provided by (used in) investing activities	14,149	(3,318)
Cash flows from financing activities:
Payments of contingent consideration	(807)	(1,421)
Debt issuance costs	(211)
Purchase of treasury stock	(695)	(6,805)
Net cash used in financing activities	(1,713)	(8,226)
Effect of exchange rate changes on cash	(358)	96
Increase (decrease) in cash and cash equivalents	2,043	(18,620)
Cash and cash equivalents, beginning of fiscal year	14,066	32,686
Cash and cash equivalents, end of fiscal year	$ 16,109	$ 14,066

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. Summary of Significan t Accounting Policies: The Company Geospace Technologies Corporation (“Geospace”) designs and manufactures instruments and equipment used by the oil and gas industry to acquire seismic data in order to locate, characterize and monitor hydrocarbon producing reservoirs. Geospace also designs and manufactures Adjacent Markets products including industrial products, imaging equipment, and provides contract manufacturing services, and Emerging Market products consisting of border and perimeter security products. Geospace and its subsidiaries are referred to collectively as the “Company”. Basis of Presentation The accompanying financial statements present the consolidated financial position, results of operations and cash flows of the Company in accordance with U.S. generally accepted accounting principles ("GAAP'). All significant intercompany balances and transactions have been eliminated. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the use of estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The Company considers many factors in selecting appropriate operational and financial accounting policies and controls, and in developing the estimates and assumptions that are used in the preparation of these financial statements. The Company continually evaluates its estimates, including those related to revenue recognition, bad debt reserves, collectability of rental revenue, inventory obsolescence reserves, self-insurance reserves, product warranty reserves, useful lives of long-lived assets, impairment of long-lived assets, impairment of goodwill and other intangible assets, contingent consideration and deferred income tax assets. The Company bases its estimates on historical experience and various other factors that are believed to be reasonable under the circumstances. While management believes current estimates are reasonable and appropriate, actual results may differ from these estimates under different conditions or assumptions. Cash and Cash Equivalents The Company considers all highly-liquid investments purchased with an original or remaining maturity at the time of purchase of three months or less to be cash equivalents. At September 30, 2022, the Company had restricted cash of $ 0.2 million on deposit with a bank which serves as collateral on employee issued credit cards. The Company had no restricted cash at September 30, 2021. At September 30, 2022, cash and cash equivalents included $ 2.6 million held by the Company’s foreign subsidiaries and branch offices, including $ 1.8 million held by its subsidiary in the Russian Federation. In response to sanctions imposed by the U.S. and others on Russia, the Russian government has imposed restrictions on companies’ abilities to repatriate or otherwise remit cash from their Russian-based operations to locations outside of Russia. As a result, this cash can be used in our Russian operations, but the Company may be unable to transfer it out of Russia without incurring substantial costs, if at all. In addition, if the Company were to repatriate the cash held by its Russian subsidiary, it would be required to accrue and pay taxes on any amount repatriated. Concentrations of Risk Credit The Company maintains its cash in bank deposit accounts that, at times, exceed federally insured limits. Management of the Company believes that the financial strength of the financial institutions holding such deposits minimizes the credit risk of such deposits. The Company sells products to customers throughout the United States and various foreign countries. The Company’s normal credit terms for trade receivables are 30 days. In certain situations, credit terms may be extended to 60 days or longer. The Company performs ongoing credit evaluations of its customers and generally does not require collateral for its trade receivables. Additionally, the Company provides long-term financing in the form of promissory notes and sales-type leases when competitive conditions require such financing. In such cases, the Company may require collateral. Allowances are recognized for potential credit losses. One customer comprised 29.3 % of the Company’s revenue during fiscal year 2022. At September 30, 2022, the Company had trade accounts and financing receivables from this customer of $ 5.5 million. Three customers comprised 19.8 %, 16.4 % and 10.6 %, of the Company’s revenue during fiscal year 2021. At September 30, 2021, the Company had trade accounts and financing receivables from these customers of $ 4.9 million, $ 7.4 million and $ 1.1 million, respectively. Supplier Certain models of the Company’s oil and gas marine wireless products require a timing device it purchases from a United States manufacturer. The Company currently does not possess the ability to manufacture this component and has no other reliable source for this device. If this manufacturer were to discontinue its production of this timing device, were to become unwilling to contract with the Company on competitive terms or were unable to supply the component in sufficient quantities to meet its requirements, the Company’s ability to compete in the marine wireless marketplace could be impaired, which could adversely affect its financial performance. The device is used in certain models of the Company’s rental equipment. Product sales requiring this device represented approximately 11 % of the Company's revenue in fiscal year 2022. There were no product sales requiring this device in fiscal year 2021. The Company purchases all of its thermal film from one manufacturer for its imaging products. Except for the film sold to the Company by this manufacturer, the Company knows of no other source for thermal film that performs as well in its imaging equipment. If the manufacturer were to discontinue producing thermal film, were to become unwilling to contract with the Company on competitive terms or were unable to supply thermal film in sufficient quantities to meet its requirements, the Company’s ability to compete in the direct thermal imaging marketplace could be impaired, which could adversely affect its financial performance. Thermal film sales represented approximately 8 % and 7 % of the Company’s revenue in fiscal year 2022 and 2021, respectively. Armed Conflict Between Russia and Ukraine A portion of the Company's oil and gas product manufacturing is conducted through its wholly-owned subsidiary Geospace Technologies Eurasia LLC, which is based in the Russian Federation. In February 2022, the Russian Federation launched a full-scale military invasion of Ukraine. Although the length and impact of the ongoing military conflict is highly unpredictable, the conflict in Ukraine could lead to market disruptions, including significant volatility in commodity prices, credit and capital markets, as well as supply chain interruptions in addition to any direct impact on the Company's operations in Russia. The United States, the United Kingdom, the EU and other countries have each imposed export controls on certain products and financial and economic sanctions on certain industry sectors and parties in and associated with Russia, and additional sanction packages to constrain Russia have been and continue to be proposed and adopted. United States sanctions against Russia have been expanded to preclude the export of oil and gas equipment anywhere in the world that involve persons designated under the sanctions and to include projects in which persons subject to the sanctions have a 33 % ownership interest or a majority of voting interests. The rapid changes in rules and implementation of new rules on imports and exports of goods involving Russia has also led to serious delays in getting goods to or from Russia as port authorities struggle to keep up with the changing environment. If imports of these products from the Russian Federation are restricted by government regulation, the Company may be forced to find other sources for the manufacturing of these products at potentially higher costs. Likewise, restrictions on the Company's ability to send products to our subsidiary in Russia, may force our subsidiary to have to find other sources for the manufacturing of these products at potentially higher costs; however, the Company's exports to Geospace Technologies Eurasia LLC have historically been limited. The risk of doing business in the Russian Federation and other economically or politically volatile areas could adversely affect the Company's operations and earnings. The Company is actively monitoring the situation in Ukraine and Russia and assessing its impact on its business, including its wholly-owned subsidiary Geospace Technologies Eurasia LLC. The net carrying value of this subsidiary on the Company's consolidated balance sheet at September 30, 2022 was $ 6.0 million. The subsidiary generated $ 1.9 million in revenue from domestic sales and the Company imported $ 1.9 million of products from the subsidiary in fiscal year 2022. The Company has no way to predict the duration, progress or outcome of the military conflict in Ukraine. The extent and duration of the military action, sanctions, and resulting market disruptions could be significant and could potentially have substantial impact on the global economy and the Company's business for an unknown period of time. Inventories The Company records a write-down of its inventories when the cost basis of any manufactured product, including any estimated future costs to complete the manufacturing process, exceeds its net realizable value. Inventories are stated at the lower of cost or net realizable value. Cost is determined on the first-in, first-out method, except that certain of the Company’s foreign subsidiaries use an average cost method to value their inventories. The Company periodically reviews the composition of its inventories to determine if market demand, product modifications, technology changes, excessive quantities on-hand and other factors hinder our ability to recover its investment in such inventories. The Company’s assessment is based upon historical product demand, estimated future product demand and various other judgments and estimates. Inventory obsolescence reserves are recorded when such assessments reveal that portions or components of the Company’s inventory investment will not be realized in its operating activities. The Company reviews it inventories for classification purposes. The value of inventories not expected to be realized in cash, sold or consumed during its next operating cycle are classified as noncurrent assets. Property, Plant and Equipment and Rental Equipment Property, plant and equipment and rental equipment are stated at cost. Depreciation expense is calculated using the straight-line method over the following estimated useful lives: Years Rental equipment 2 - 5 Property, plant and equipment: Machinery and equipment 3 - 15 Buildings and building improvements 10 - 50 Other 5 - 10 Expenditures for renewals and betterments are capitalized. Repairs and maintenance expenditures are charged to expense as incurred. The cost and accumulated depreciation of assets sold or otherwise disposed of are removed from the accounts and any gain or loss thereon is reflected in the statements of operations. Impairment of Long-lived Assets The Company’s long-lived assets are reviewed for impairment whenever an event or change in circumstances indicates the carrying amount of an asset or group of assets may not be recoverable. The impairment review, if necessary, includes a comparison of expected future cash flows (undiscounted and without interest charges) to be generated by an asset group with the associated carrying value of the related assets. If the carrying value of the asset group exceeds the expected future cash flows, an impairment loss is recognized to the extent that the carrying value of the asset group exceeds its fair value. At March 31, 2022, in light of the Company’s losses from operations for the six months ended March 31, 2022 and for fiscal year 2021 and the current war between Russia and Ukraine, management reviewed the recoverability of the carrying value of certain asset groups based on future undiscounted cash flows and determined that their expected future cash flows exceeded their carrying value. No additional indicators of impairment related to this asset group were observed at September 30, 2022. At September 30, 2022, in light of the Company's impairment of its goodwill associated with its Emerging Markets reporting unit, the Company reviewed the recoverability of the carrying value of the long-lived assets of this reporting unit and determined that their undiscounted cash flows exceeded their carrying value. As a result, no impairment charges were necessary to the Company's long-lived assets associated with its Emerging Markets reporting unit. At September 30, 2022, in light of the Company's decision to dispose of certain manufacturing cabling equipment, the Company reviewed the recoverability of the carrying value of these assets and determined that their carrying value exceeded their fair value. As a result of the fair value analysis, an impairment charge of $ 0.4 million was recorded in the fourth quarter of fiscal year 2022 related to the equipment. The impairment charge is included as a component of cost of revenue in the Company’s consolidated statements of operations. Goodwill The Company conducts its evaluation of goodwill at the reporting unit level on an annual basis as of September 30 and more frequently if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. The guidance on the testing of goodwill for impairment provides the option to first assess qualitative factors to determine if the fair value of a reporting unit exceeds its carrying amount. If, based on the qualitative assessment of events or circumstances, an entity determines it is more likely than not that the fair value of a reporting unit is more than its carrying amount then it is not necessary to perform a quantitative assessment. However, if an entity concludes otherwise, then a quantitative assessment must be performed. If, based on the quantitative assessment, the Company determines that the fair value of a reporting unit is less that its carrying amount, a goodwill impairment is recognized equal to the difference between the carrying amount of the reporting unit and its fair value, not to exceed the carrying amount of the goodwill. At September 30, 2022, the Company impaired its goodwill associated with its Emerging Markets reporting unit. See Note 11 for more information. Other Intangible Assets Intangible assets are carried at cost, net of accumulated amortization. The estimated useful life of the Company’s other intangible assets are evaluated each reporting period to determine whether events or circumstances warrant a revision to the remaining amortization period. If the estimate of an intangible asset’s remaining useful life is changed, the amortization period should be changed prospectively. Amortization expense is calculated using the straight-line method over the following estimated useful lives: Years Developed technology 18 Trade names 5 Customer relationships 4 Non-compete agreements 4 Revenue Recognition See Note 2 to these consolidated financial statements. Contingent Consideration The Company established earn-out liabilities in connection with its business acquisitions in fiscal year 2018 and 2019. The Company engaged the services of a valuation firm to measure the initial fair value of the earn-out liabilities as of the acquisition date for each business. The valuation technique used to measure the fair value of the liability was derived from models utilizing market observable inputs, internal estimates and the use of internal projections of future revenue and/or gross profits. The Company reviews the fair value of its contingent earn-out liabilities on a quarterly basis. Adjustments to the liabilities are included as a component of earnings in the consolidated statements of operations. See Note 18 to these consolidated financial statements for additional information. Research and Development Costs The Company expenses research and development costs as incurred. Research and development costs include salaries, employee benefit costs, department supplies, direct project costs and other related costs. Product Warranties Most of the Company’s products do not require installation assistance or sophisticated instructions. The Company offers a standard product warranty obligating it to repair or replace equipment with manufacturing defects. The Company maintains a reserve for future warranty costs based on historical experience or, in the absence of historical product experience, management’s estimates. Reserves for future warranty costs are included within other current liabilities on the consolidated balance sheets. Changes in the product warranty reserve are reflected in the following table (in thousands): Balance at October 1, 2020 $ 258 Accruals for warranties issued during the year 814 Settlements made (in cash or in kind) during the year ( 693 ) Balance at September 30, 2021 379 Accruals for warranties issued during the year 1,431 Settlements made (in cash or in kind) during the year ( 1,286 ) Balance at September 30, 2022 $ 524 Stock-Based Compensation The Company accounts for stock-based compensation, including grants of restricted awards and unqualified stock options in accordance with Accounting Standards Codification Topic 718, which requires that all share-based payments (to the extent that they are compensatory) be recognized as an expense in the Company’s consolidated statements of operations based on their fair values on the award date and the estimated number of shares it ultimately expects to vest. The Company recognizes stock-based compensation expense on a straight-line basis over the requisite service period of the award. The Company’s stock-based compensation plan and awards are more fully described in Note 15 to these consolidated financial statements. Foreign Currency Gains and Losses The assets and liabilities of the Company’s foreign subsidiaries and branch offices that have a foreign currency as their functional currency have been translated into U.S. dollars using the exchange rates in effect at the balance sheet date. Results of operations have been translated using the average exchange rates during the year. Resulting translation adjustments have been recorded as a component of accumulated other comprehensive loss in stockholders’ equity. Foreign currency transaction gains and losses are included in the statements of operations as they occur. Transaction gains and losses on intra-entity foreign currency transactions and balances, including advances and demand notes payable on which settlement is not planned or anticipated in the foreseeable future, are recorded in “accumulated other comprehensive loss” on our consolidated balance sheets. Fair Value Fair value is the price that would be received to sell an asset or the amount paid to transfer a liability in an orderly transaction between market participants (an exit price) at the measurement date. GAAP has established a fair value hierarchy which prioritizes the inputs to the valuation techniques used to measure fair value into three levels. These levels are determined based on the lowest level input that is significant to the fair value measurement. Level 1 represents unadjusted quoted prices in active markets for identical assets and liabilities. Level 2 represents quoted prices for similar assets and liabilities in active markets (other than those included in Level 1) which are observable, either directly or indirectly. Level 3 represents valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Also see Note 5 to these consolidated financial statements. Income Taxes Income taxes are presented in accordance with the Accounting Standards Codification Topic 740 (“Topic 740”) guidance for accounting for income taxes. The estimated future tax effects of temporary differences between the tax basis of assets and liabilities and amounts reported in the accompanying consolidated balance sheets, as well as operating loss and tax credit carrybacks and carryforwards are recorded. Deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities (temporary differences) and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The Company periodically reviews the recoverability of tax assets recorded on the balance sheet and provides valuation allowances if it is more likely than not that such assets will not be realized. The Company follows the guidance of Topic 740 to analyze all tax positions that are less than certain. Topic 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. In accordance with Topic 740, the Company recognizes in its financial statements the impact of a tax position if that position is “more likely than not” to be sustained on audit, based on the technical merits of the position. The Company’s estimate of the potential outcome of any uncertain tax issue is subject to management’s assessment of relevant risks, facts, and circumstances existing at that time. The Company classifies interest and penalties associated with the payment of income taxes, if any, in the Other Income (Expense) section of its consolidated statements of operations. The Company incurred no interest or penalties for the fiscal years ended September 30, 2022 and 2021. Recently Adopted Accounting Pronouncements In December 2019, the Financial Accounting Standards Board (the “FASB”) issued guidance on simplifying the accounting for income taxes. The guidance eliminates certain exceptions to the general principles in Topic 740 and clarifies and amends existing guidance to improve consistent application. This guidance is effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2020. The Company adopted this standard during the first quarter of fiscal year 2022 . The adoption of this guidance did not have any impact on the Company's consolidated financial statements. Recently Issued Accounting Pronouncements In June 2016, the FASB issued guidance surrounding credit losses for financial instruments that replaces the incurred loss impairment methodology in generally accepted accounting principles. The new impairment model requires immediate recognition of estimated credit losses expected to occur for most financial assets and certain other financial instruments. For available-for-sale debt securities with unrealized losses, credit losses will be recognized as allowances rather than reductions in the amortized cost of the securities. As a smaller reporting company, the Company must adopt this standard no later than the first quarter of its fiscal year ending September 30, 2024, although early adoption is permitted. The standard’s provisions will be applied as a cumulative-effect adjustment to retained earnings as of the beginning of the first effective reporting period. The Company intends to adopt this standard during the first quarter of its fiscal year ending September 30, 2024 and is continuing to evaluate the impact of this new guidance on its consolidated financial statements.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue Recognition	2. Revenue Recognition In accordance with ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”), the Company recognizes revenue when performance of contractual obligations are satisfied, generally when control of the promised goods or services is transferred to its customers, in an amount that reflects the consideration it expects to be entitled to in exchange for those goods or services. The Company primarily derives product revenue from the sale of its manufactured products. Revenue from these product sales, including the sale of used rental equipment, is recognized when obligations under the terms of a contract are satisfied, control is transferred and collectability of the sales price is probable. The Company records deferred revenue when customer funds are received prior to shipment or delivery or performance has not yet occurred. The Company assesses collectability during the contract assessment phase. In situations where collectability of the sales price is not probable, the Company recognizes revenue when it determines that collectability is probable or when non-refundable cash is received from its customers and there is not a significant right of return. Transfer of control generally occurs with shipment or delivery, depending on the terms of the underlying contract. The Company’s products are generally sold without any customer acceptance provisions, and the Company’s standard terms of sale do not allow customers to return products for credit. Revenue from engineering services is recognized as services are rendered over the duration of a project, or as billed on a per hour basis. Field service revenue is recognized when services are rendered and is generally priced on a per day rate. The Company also generates revenue from short-term rentals under operating leases of its manufactured products. Rental revenue is recognized as earned over the rental period if collectability of the rent is reasonably assured. Rentals of the Company’s equipment generally range from daily rentals to minimum rental periods of up to one year. The Company has determined that ASC 606 does not apply to rental contracts, which are within the scope of ASC Topic 842, Leases . As permissible under ASC 606, sales taxes and transaction-based taxes are excluded from revenue. The Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected duration of one year or less. Additionally, the Company expenses costs incurred to obtain contracts when incurred because the amortization period would have been one year or less. These costs are recorded in selling, general and administrative expenses. The Company has elected to treat shipping and handling activities in a sales transaction after the customer obtains control of the goods as a fulfillment cost and not as a promised service. Accordingly, fulfillment costs related to the shipping and handling of goods are accrued at the time of shipment. Amounts billed to a customer in a sales transaction related to reimbursable shipping and handling costs are included in revenue and the associated costs incurred by the Company for reimbursable shipping and handling expenses are reported in cost of revenue. The Company incurred shipping and handling expenses of $ 0.6 million and $ 0.4 million, respectively, for the fiscal years ended September 30, 2022 and 2021, respectively. During the third quarter of fiscal year 2020, the Company was awarded an approximate $ 10.5 million contract (inclusive of a subsequent contract amendment of $ 0.3 million) with the U.S. Customs and Border Protection (the “CBP”) to provide a technology solution to the Department of Homeland Security. Revenue recognized under the contract for the fiscal years ended September 30, 2022 and 2021 was $ 0.3 million and $ 9.9 million, respectively. The Company has recognized revenue on the entire amount of the contract and no performance obligations remain under the contract except for on-going service and maintenance. Unsatisfied performance obligations on all other contracts held by the Company at September 30, 2022 had an original duration of one year or less. At September 30, 2022 and September 30, 2021, the Company had no deferred contract costs or deferred contract liabilities. During the fiscal years ended September 30, 2022 and 2021, no revenue was recognized from deferred contract liabilities and no cost of revenue was recognized from deferred contract costs. During the second quarter of fiscal year 2020, the Company partially financed a $ 12.5 million product sale by entering into a $ 10.0 million promissory note with the customer. The note has a three-year term with monthly principal and interest payments of $ 0.3 million. Due to the financial condition of the customer, the Company had concerns over the probable collectability of the promissory note. As a result, the Company did no t recognize any revenue or cost of revenue on the product sale through its first quarter of fiscal year 2021. During the second quarter of fiscal year 2021, as a result of new information received from the customer, management determined that it was probable that the customer would satisfy its remaining payment obligations on the promissory note with the Company and recognized revenue of $ 12.5 million on the product sale. During the fourth quarter of fiscal year 2021, the Company granted the customer a six-month principal payment forbearance. The customer recommenced its monthly payments to the Company in the second quarter of fiscal year 2022. In October 2022, the Company granted the customer an additional six-month payment forbearance. The customer has made payments totaling $ 9.5 million (exclusive of interest) as of September 30, 2022 related to the product sale, and the balance outstanding on the promissory note at September 30, 2022 was $ 3.0 million. Deferred contract costs associated with this sale were recognized in the second quarter of fiscal year 2021. For each of the Company’s operating segments, the following table presents revenue only from the sale of products and the performance of services under contracts with customers (in thousands). Therefore, the table excludes all revenue earned from rental contracts. YEAR ENDED SEPTEMBER 30, 2022 2021 Oil and Gas Markets Traditional exploration product revenue $ 6,558 $ 4,518 Wireless exploration product revenue 15,822 27,016 Reservoir product revenue 1,968 1,877 Total revenue 24,348 33,411 Adjacent Markets Industrial product revenue 25,640 21,335 Imaging product revenue 13,360 10,925 Total revenue 39,000 32,260 Emerging Markets Revenue 711 10,193 Corporate Revenue 50 — Total $ 64,109 $ 75,864 See Note 20 for more information on the Company’s operating segments. For each of the geographic areas where the Company operates, the following table presents revenue from the sale of products and performance of services under contracts with customers (in thousands). Therefore, the table excludes all revenue earned from rental contracts. YEAR ENDED SEPTEMBER 30, 2022 2021 Asia $ 10,978 $ 17,268 Canada 890 1,550 Europe 15,705 7,693 South America 719 287 United States 33,778 47,101 Other 2,039 1,965 $ 64,109 $ 75,864 Revenue is attributable to countries based on the ultimate destination of the product sold, if known. If the ultimate destination is not known, revenue is attributable to countries based on the geographic location of the initial shipment.

Business Acquisition

Business Acquisition	12 Months Ended
	Sep. 30, 2022
Business Combinations [Abstract]
Business Acquisition	3. Business Acquisition On July 2, 2021 , we acquired 100 percent of the outstanding membership interest in Aquana, LLC ("Aquana") a comprehensive wireless water monitoring and control system provider. Aquana operates as a wholly-owned subsidiary of the Company and resides in the Company’s Adjacent Markets business segment. The acquisition purchase price consisted of an initial cash down payment at closing of approximately $ 1.4 million and additional contingent cash payments over a six year earn-out period. The contingent earn-out payments, if any, will be derived from certain eligible revenue generated during the earn-out period from products and services sold by Aquana. There is no maximum limit to the contingent cash payments that could be made. The merger agreement with Aquana requires the continued employment of a certain key employee and former member of Aquana for the first four years of the six year earn-out period in order for any of Aquana’s former members to be eligible to any earn-out payments. In accordance with ASC 805, Business Combinations , due to the continued employment requirement, no liability has been recorded for the estimated fair value of contingent earn-out payments for this transaction. Earn-outs achieved, if any, will be recorded as compensation expense when incurred. In connection with the Aquana acquisition, the Company recorded goodwill of $ 0.7 million, and other intangible assets of $ 0.7 million. Current assets and current liabilities acquired in the transaction were nominal. Legal and professional costs of $ 0.2 million related to the Aquana acquisition are included in selling, general and administrative expenses for the fiscal year ended September 30, 2021. The Aquana acquisition represents the Company’s strategy to expand its product revenues, as well as its engineering and manufacturing competencies, to markets outside the oil and gas industry.

Investments

Investments	12 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Investments	4. Investments Short-term Investments The Company classifies its short-term investments as available-for-sale securities. Available-for-sale securities are carried at fair market value with net unrealized gains and losses reported as a component of accumulated other comprehensive loss in stockholders’ equity. For the fiscal years ended September 30, 2022 and 2021, the Company realized losses of $ 22,000 and $ 4,000 , respectively, from the sale of short-term investments. The Company’s short-term investments were composed of the following (in thousands): AS OF SEPTEMBER 30, 2022 Amortized Unrealized Unrealized Estimated Short-term investments: Corporate bonds $ 909 $ — $ ( 15 ) $ 894 Total $ 909 $ — $ ( 15 ) $ 894 AS OF SEPTEMBER 30, 2021 Amortized Unrealized Unrealized Estimated Short-term investments: Corporate bonds $ 9,511 $ — $ ( 15 ) $ 9,496 Total $ 9,511 $ — $ ( 15 ) $ 9,496 The Company’s short-term investments have contractual maturities ranging from February 2023 to March 2023. Investment in Debt Security During the fiscal year ended September 30, 2021, the Company recognized a gain of $ 2.0 million in connection with the sale of its interest in a senior secured bond originally issued from an international seismic marine customer.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	5. Fair Value of Financial Instruments The Company’s financial instruments generally include cash and cash equivalents, short-term investments, trade accounts, financing receivables and accounts payable. Due to the short-term maturities of cash and cash equivalents, trade accounts receivable, financing receivables and accounts payable, the carrying amounts approximate fair value on the respective balance sheet dates. The valuation technique used to measure the fair value of the contingent consideration was derived from models utilizing market observable inputs. The Company measures its short-term investments and contingent consideration at fair value on a recurring basis. The following tables present the fair value of the Company’s short-term investments and contingent consideration by valuation hierarchy and input (in thousands): AS OF SEPTEMBER 30, 2022 Quoted Prices Assets Significant Significant Totals Short-term investments: Corporate bonds $ — $ 894 $ — $ 894 Total assets $ — $ 894 $ — $ 894 Contingent consideration liabilities $ — $ — $ 175 $ 175 Total liabilities $ — $ — $ 175 $ 175 AS OF SEPTEMBER 30, 2021 Quoted Prices Assets Significant Other Significant Totals Short-term investments: Corporate bonds $ — $ 9,496 $ — $ 9,496 Total assets $ — $ 9,496 $ — $ 9,496 Contingent consideration liabilities: Current portion $ — $ — $ 807 $ 807 Non-current portion — — 5,210 5,210 Total liabilities $ — $ — $ 6,017 $ 6,017 Assets and Liabilities Measured on a Nonrecurring Basis The measurements utilized to determine the implied fair value of the Company's Emerging Markets reporting unit as of September 30, 2022 represented significant unobservable inputs (Level 3). See Note 11 for discussion of these inputs. The following table summarizes changes in the fair value of the Company’s Level 3 financial instruments for the fiscal years ended September 30, 2022 and 2021: Contingent Consideration balance at October 1, 2020 $ 10,962 Fair value adjustments ( 3,524 ) Payment of contingent consideration ( 1,421 ) Balance at September 30, 2021 6,017 Fair value adjustments ( 5,035 ) Payment of contingent consideration ( 807 ) Balance at September 30, 2022 $ 175 Adjustments to the fair value of the contingent consideration are based on internal estimates and management assessments regarding potential future scenarios. The Company believes its estimates and assumptions are reasonable; however, there is significant judgment involved. Also see Note 18.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Sep. 30, 2022
Stockholders' Equity Note [Abstract]
Accumulated Other Comprehensive Loss	6. Accumulated Other Comprehensive Loss Accumulated other comprehensive loss consisted of the following (in thousands): Unrealized Foreign Total Balance at October 1, 2020 $ — $ ( 16,698 ) $ ( 16,698 ) Other comprehensive income (loss) ( 15 ) 393 378 Balance at September 30, 2021 $ ( 15 ) ( 16,305 ) ( 16,320 ) Other comprehensive income — 1,007 1,007 Balance at September 30, 2022 $ ( 15 ) $ ( 15,298 ) $ ( 15,313 )

Trade Accounts and Financing Re

Trade Accounts and Financing Receivables	12 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Trade Accounts and Financing Receivables	7. Trade Accounts and Financing Receivables Trade accounts receivable, net (excluding financing receivables) are reflected in the following table (in thousands): AS OF SEPTEMBER 30, 2022 2021 Trade accounts receivable $ 13,252 $ 12,635 Allowance for doubtful accounts ( 591 ) ( 428 ) $ 12,661 $ 12,207 The allowance for doubtful accounts represents the Company’s best estimate of probable credit losses. The Company determines the allowance based upon historical experience and a current review of its accounts receivable balances. Accounts receivable balances are charged off against the allowance whenever it is probable that the receivable balance will not be recoverable. Financing receivables are reflected in the following table (in thousands): AS OF SEPTEMBER 30, 2022 2021 Promissory notes $ 8,225 $ 5,432 Sales-type lease — 2,464 Total financing receivables 8,225 7,896 Unearned income: Sales-type lease — ( 6 ) Total unearned income — ( 6 ) Total financing receivables, net of unearned income 8,225 7,890 Less current portion ( 8,225 ) ( 4,952 ) Non-current notes receivable $ — $ 2,938 Promissory notes receivable are generally collateralized by the products sold, and bear interest at rates ranging from 7.0 % to 9.5 % per year. After consideration of the forbearance discussed in Note 2, the promissory notes receivable mature at various times through January 2024 . The Company has, on occasion, extended or renewed notes receivable as they mature, but there is no obligation to do so. During the first quarter of fiscal year 2022, the Company financed a sale of rental equipment by entering into a $ 3.7 million promissory note with a customer. The note has a term of nine months , with principal and interest payments due monthly until maturity. During the second quarter of fiscal year 2022, the Company partially financed a $ 10.0 million sale of rental equipment by entering into an $ 8.0 million promissory note with a customer. The note has a one-year term, with principal and interest payments due quarterly until maturity. During the third quarter of fiscal year 2021, the Company entered into a sales-type lease with a customer for rental equipment. The lease, which had a term of six months , was paid during the second quarter of fiscal year 2022. During the second quarter of fiscal year 2020, the Company partially financed a $ 12.5 million product sale by entering into a $ 10.0 million promissory note with the customer. The note has a three-year term with monthly principal and interest payments of $ 0.3 million. Due to the financial condition of the customer, the Company had concerns over the probable collectability of the promissory note. As a result, the promissory note was not reflected on the Company’s consolidated balance sheet through its first quarter of fiscal year 2021. During the second quarter of fiscal year 2021, as a result of new information received from the customer, management determined that it was probable that the customer would satisfy its remaining payment obligations to the Company and, therefore, the Company recognized the promissory note on its consolidated balance sheet as of March 31, 2021. See Note 2 for more information on this matter.

Inventories

Inventories	12 Months Ended
	Sep. 30, 2022
Inventory Disclosure [Abstract]
Inventories	8. Inventories Inventories consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Finished goods $ 14,653 $ 14,968 Work in process 6,230 8,247 Raw materials 25,609 24,720 Obsolescence reserve (net realizable value adjustment) ( 13,971 ) ( 13,636 ) 32,521 34,299 Less current portion 19,995 16,196 Non-current portion $ 12,526 $ 18,103 Inventory obsolescence expense totaled approximately $ 3.2 million and $ 3.0 million during fiscal years 2022 and 2021, respectively. Raw materials include semi-finished goods and component parts that totaled approximately $ 20.7 million and $ 22.7 million at September 30, 2022 and 2021, respectively.

Leases

Leases	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	9. Leases As Lessee The Company has elected not to record operating right-of-use assets or operating lease liabilities on its consolidated balance sheet for leases having a minimum term of 12 months or less. Such leases are expensed on a straight-line basis over the lease term. Variable lease payments are excluded from the measurement of operating right-of-use assets and operating liabilities and recognized in the period in which the obligation for those payments is incurred. As of September 30, 2022, the Company has two operating right-of use assets related to leased facilities in Austin, Texas and Melbourne, Florida. Maturities of the operating lease liabilities as of September 30, 2022 were as follows (in thousands): For fiscal years ending September 30, 2023 $ 270 2024 278 2025 186 2026 130 2027 134 2028 91 Future minimum lease payments $ 1,089 Less interest ( 79 ) Present value of minimum lease payments $ 1,010 Less current portion ( 241 ) Long-term portion $ 769 Lease costs recognized in the consolidated statements of operations for the fiscal years ended September 30, 2022 and 2021 is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Right-of-use operating lease costs $ 272 $ 246 Short-term lease costs 190 239 Total $ 462 $ 485 Right-of-use operating lease costs and short-term lease costs are included as a component of total operating expenses. Other information related to operating leases is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 262 $ 211 Operating lease assets obtained in exchange for new lease liabilities — 1,336 Weighted average remaining lease term 4.7 years 5.6 years Weighted average discount rate 3.25 % 3.25 % The discount rate used on the operating right-of-use assets represented the Company’s incremental borrowing rate at lease inception. As Lessor Equipment The Company leases equipment to customers which generally range from daily rentals to minimum rental periods of up to one year . All of the Company's current leasing arrangements, with the Company acting as lessor, are classified as operating leases. The majority of the Company’s rental revenue is generated from its marine-based wireless seismic data acquisition system. The Company regularly evaluates the collectability of its lease receivables on a lease-by-lease basis. The evaluation primarily consists of reviewing past due account balances and other factors such as the credit quality of the customer, historical trends of the customer and current economic conditions. The Company suspends revenue recognition when the collectability of amounts due are no longer probable and concurrently records a direct write-off of the lease receivable to rental revenue to limit rental revenue recognized to the cash collections received. As of September 30, 2022, the Company’s trade accounts receivables included lease receivables of $ 3.2 million. Rental revenue related to leased equipment for fiscal years 2022 and 2021 was $ 24.9 million and $ 19.0 million, respectively. Future minimum lease obligations due from the Company's leasing customers as of September 30, 2022 were $ 24.6 million, all of which is expected to be due within the next 12 months. Rental equipment consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Rental equipment, primarily wireless recording equipment $ 83,887 $ 95,827 Accumulated depreciation and impairment ( 55,688 ) ( 56,922 ) $ 28,199 $ 38,905 Rental equipment depreciation expense was $ 13.7 million and $ 15.1 million in fiscal years 2022 and 2021, respectively. Property During the first quarter of fiscal year 2022, the Company leased a portion of its property located in Calgary, Alberta, Canada and fully leased its warehouse in Bogotá, Colombia. The lease in Canada commenced in November 2021 and is for a five-year term. The lease on the warehouse in Bogotá commenced in December 2021 and is for a one-year term. Rental revenue related to these two properties for fiscal year 2022 was $ 0.2 million. Future minimum lease payments due to the Company as of September 30, 2022 were as follows (in thousands): For fiscal years ending September 30, 2023 $ 136 2024 128 2025 131 2026 132 2027 11 $ 538

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	10. Property, Plant and Equipment Property, plant and equipment consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Land and land improvements $ 7,855 $ 7,932 Building and building improvements 24,588 24,646 Machinery and equipment 59,393 56,828 Furniture and fixtures 1,434 1,417 Tools and molds 3,243 3,036 Construction in progress 341 2,288 Transportation equipment 74 75 96,928 96,222 Accumulated depreciation and impairment ( 70,330 ) ( 66,239 ) $ 26,598 $ 29,983 Property, plant and equipment depreciation expense was $ 4.1 and $ 4.0 million for the fiscal years ended September 30, 2022 and 2021. Impairment expense of $ 0.4 million was incurred on certain manufacturing equipment in fiscal year 2022. The impairment expense is included as a component of cost of revenue in the consolidated statement of operations.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	11. Goodwill and Other Intangible Assets At September 30, 2022, the Company had goodwill of $ 0.7 million and other intangible assets, net of $ 0.6 million attributable to its Adjacent Markets reporting unit; other intangible assets, net of $ 3.5 million attributable to its Emerging Markets reporting unit; and other intangible assets, net of $ 1.5 million attributable to its Oil and Gas Markets reporting unit. Goodwill represents the excess cost of a business acquired over the fair market value of identifiable net assets at the date of acquisition. At September 30, 2022, the Company assessed the goodwill associated with both its Adjacent Markets and Emerging Markets reporting units for impairment. The fair value of the reporting units were estimated using the expected present value of future cash flows, market data and using estimates, judgments and other assumptions that management believes were appropriate under the circumstances. The estimates and judgments used in the assessment included consideration of market participant rates of return and the terminal value of the reporting units. The Company determined future cash flows provided the best estimate of the fair value of its reporting units. Key assumptions in determining the fair value in the impairment analysis include revenue and cash flow projections, discount rates, long-term growth rates, and the effective tax rate the Company determined to be appropriate. In determining fair value for the Company's Emerging Markets reporting unit, cash flow projections included obtaining additional contracts from the CBP and considered competition in the marketplace. These estimates and projections can be unpredictable, particularly for Quantum Technology Sciences, Inc. ("Quantum") as an emerging business. The total Company’s estimate of reporting unit fair values was reconciled to its then market capitalization (based upon the stock market price) plus an implied control premium. As a result of the assessment, the Company determined that the fair value its Emerging Markets reporting unit was less than its carrying amount and recorded an impairment charge of $ 4.3 million for the entire goodwill associated with this reporting unit for the fiscal year ended September 30, 2022. The primary factors impacting the decrease in the fair value of the Emerging Markets reporting unit was historical operating losses and the current outlook for sales and operating performance. The carrying value of the reporting unit exceeded the fair value by approximately $ 8 million as a result of the assessment. In measuring sensitivity, changes to key assumptions, each of which would cause an approximate $ 1.0 million change in the fair value of the reporting unit include (i) a 3 % change in the discount rate, (ii) a 4 % change in revenue, (iii) a 10 % change in cost of revenue or (iv) a 13 % change in research and development expense. No impairment charge to the Emerging Markets asset group was necessary as its future undiscounted cash flows exceeded the carrying value. The Emerging Markets asset group could incur future impairment charges to its other intangible assets if it is unable to obtain additional contracts from the CBP or other customers. No impairment charge was necessary on the Company's Adjacent Markets reporting unit as a result of the assessment. Also see Note 1 to these consolidated financial statements. The Company’s consolidated goodwill and other intangible assets consisted of the following (in thousands): Weighted-Average Remaining Useful Lives (in years) AS OF SEPTEMBER 30, 2022 2021 Goodwill: Emerging Markets reporting unit $ 4,336 $ 4,336 Adjacent Markets reporting unit 736 736 Total goodwill 5,072 5,072 Accumulated impairment losses ( 4,336 ) — $ 736 $ 5,072 Other intangible assets: Developed technology 14.2 $ 6,475 $ 6,475 Customer relationships 0.5 3,900 3,900 Trade names 1.0 2,022 2,022 Non-compete agreements 0.3 186 186 Total other intangible assets 7.5 12,583 12,583 Accumulated amortization ( 7,010 ) ( 5,333 ) $ 5,573 $ 7,250 Other intangible assets amortization expense was $ 1.7 million for each of the fiscal years ended September 30, 2022 and 2021. As of September 30, 2022, future estimated amortization expense of other intangible assets is as follows (in thousands): For fiscal years ending September 30, 2023 $ 768 2024 395 2025 381 2026 374 2027 360 Thereafter 3,295 $ 5,573

Long-Term Debt

Long-Term Debt	12 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Long-Term Debt	12. Long-Term Debt The Company had no long-term debt outstanding at September 30, 2022 or 2021. In May 2022, the Company entered into a credit agreement (the “Agreement”) with Amerisource Funding, Inc, as administrative agent and as a lender, and Woodforest National Bank, as a lender. Available borrowings under the Agreement are determined by a borrowing base with a maximum availability of $ 10 million. The borrowing base is determined based upon certain of the Company's domestic assets which include (i) 70 % loan to value of the Company's property located at 6410 Langfield Road in Houston, Texas (the “Property”), (ii) 50 % of forced liquidation value of equipment, (iii) 80 % of certain accounts receivable and (iv) 50 % of forced liquidation value of certain inventory (inventory borrowing base limited to 100 % of borrowing base credit given toward accounts receivable). The Agreement is for a two-year term with all funds borrowed due at the expiration of the term. The interest rate on borrowed funds is the Wall Street prime rate (with a minimum of 3.25 %) plus 4.00 %. The Company is required to make monthly interest payments on borrowed funds. Borrowings under the Agreement will be principally secured by the Property and the Company's domestic equipment, inventory and accounts receivables. In addition, certain domestic subsidiaries of the Company have guaranteed the obligations of the Company under the Agreement and such subsidiaries have secured the obligations by pledging certain assets. The Agreement requires the Company to maintain a minimum consolidated tangible net worth of $ 100 million. At September 30, 2022, the Company was compliant with all covenants under the Agreement and its borrowing availability was $ 8.5 million. Debt issuance costs of $ 0.2 million were incurred in connection with the Agreement. These costs were capitalized in other non-current assets on the consolidated balance sheet and are being amortized to interest expense over the term of the Agreement.

Other Current Liabilities

Other Current Liabilities	12 Months Ended
	Sep. 30, 2022
Other Liabilities, Current [Abstract]
Other Current Liabilities	13. Other Current Liabilities Other current liabilities consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Deferred revenue $ 629 $ 1,346 Compensated absences 1,849 1,728 Payroll 804 1,579 Property and sales taxes 991 1,038 Legal and professional fees 346 360 Medical claims 590 574 Product warranty 524 379 Income taxes 56 29 Other 827 766 $ 6,616 $ 7,799 The Company is self-insured for certain losses related to employee medical claims. The Company has purchased stop-loss coverage for individual claims in excess of $ 175,000 per claimant per year in order to limit its exposure to any significant levels of employee medical claims. Self-insured losses are accrued based on the Company’s historical experience and on estimates of aggregate liability for uninsured claims incurred using certain actuarial assumptions followed in the insurance industry.

Employee Benefits

Employee Benefits	12 Months Ended
	Sep. 30, 2022
Retirement Benefits [Abstract]
Employee Benefits	14. Employee Benefits The Company’s U.S. employees are participants in the Geospace Technologies Corporation’s Employee’s 401(k) Retirement Plan (the “Plan”), which covers substantially all eligible employees in the United States. The Plan is a qualified salary reduction plan in which all eligible participants may elect to have a percentage of their compensation contributed to the Plan, subject to certain guidelines issued by the Internal Revenue Service. The Company’s share of discretionary matching contributions was approximately $ 1.0 million and $ 0.9 million in fiscal years 2022 and 2021, respectively. The Company’s stock incentive plans in which key employees may participate are discussed in Note 15 to these consolidated financial statements.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Sep. 30, 2022
Stockholders' Equity Note [Abstract]
Stockholders' Equity	15. Stockholders’ Equity In February 2014, the board of directors and stockholders approved the 2014 Long Term Incentive Plan, as amended (the “2014 Plan”). Under the 2014 Plan, an aggregate of 3,000,000 shares of common stock may be issued. The Company is authorized to issue nonqualified and incentive stock options to purchase common stock, restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) to key employees, directors and consultants under the 2014 Plan. Options have a term not to exceed ten years , with the exception of incentive stock options granted to employees owning ten percent or more of the outstanding shares of common stock, which have a term not to exceed five years . The exercise price of any option may not be less than the fair market value of the common stock on the date of grant. In the case of incentive stock options granted to an employee owning ten percent or more of the outstanding shares of common stock, the exercise price of such option may not be less than 110 % of the fair market value of the common stock on the date of grant. An RSU represents a contingent right to receive one share of the common stock upon vesting. Under the 2014 Plan, the Company may issue RSAs and RSUs to employees for no payment by the employee or for a payment below the fair market value on the date of grant. The RSAs and RSUs are subject to certain restrictions described in the 2014 Plan. At September 30, 2022, an aggregate of 1,468,916 shares of common stock were available for issuance under the 2014 Plan. The following table summarizes the combined activity under the equity incentive plans for the indicated periods: Number of Weighted Number of Weighted Number of Weighted Outstanding at October 1, 2020 91,100 $ 17.66 110,374 $ 16.66 218,257 $ 14.82 Granted — — — — 195,950 7.00 Exercised — — — — — — Forfeited ( 52,300 ) 16.47 ( 2,500 ) 14.78 ( 44,001 ) 7.14 Vested — — ( 65,777 ) 17.28 ( 70,832 ) 14.63 Outstanding at September 30, 2021 38,800 21.42 42,097 15.95 299,374 10.87 Granted — — — — 200,350 8.49 Exercised — — — — — — Forfeited ( 38,800 ) 21.42 — — ( 51,603 ) 9.17 Vested — — ( 41,097 ) 14.67 ( 124,262 ) 11.20 Outstanding at September 30, 2022 $ — $ — 1,000 $ 14.59 323,859 $ 9.54 During fiscal years 2022 and 2021, the Company issued 200,350 and 195,950 RSUs to certain of its employees, executive officers and directors under the 2014 Plan. The RSUs issued include both time-based and performance-based vesting provisions. The weighted average grant date fair value of each RSU issued for fiscal years 2022 and 2021 was $ 8.49 and $ 7.00 per unit, respectively. The total grant date fair value of all RSUs issued for fiscal years 2022 and 2021 was $ 1.7 million and $ 1.4 million, respectively, which will be charged to expense over the next one to four years as the restrictions lapse. Compensation expense for RSUs was determined based on the closing market price of the Company’s stock on the date of grant applied to the total number of units that are anticipated to fully vest. No RSAs have been issued since fiscal year 2019. All RSAs and RSUs outstanding at September 30, 2022 and 2021 were issued from the 2014 Plan. Stock-based compensation expense recognized for the fiscal years ended September 30, 2022 and 2021 was $ 1.7 million and $ 2.0 million, respectively. The Company accounts for forfeitures as they occur and records compensation costs under the assumption that the holder will complete the requisite service period. As of September 30, 2022, the Company had unrecognized compensation expense of $ 2,000 relating to RSAs which is expected to be recognized in the first quarter of fiscal year 2023. As of September 30, 2022, the Company had unrecognized compensation expense of $ 1.9 million relating to RSUs which is expected to be recognized over a weighted average period of 2.3 years.

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	16. Income Taxes: Components of loss before income taxes were as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 United States $ ( 19,425 ) $ ( 10,628 ) Foreign ( 3,258 ) ( 2,850 ) $ ( 22,683 ) $ ( 13,478 ) The provision for income taxes consisted of the following (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Current Federal $ ( 12 ) $ 14 Foreign 202 561 State — — 190 575 Deferred: Federal — — Foreign ( 17 ) 3 ( 17 ) 3 $ 173 $ 578 Actual income tax expense differs from income tax expense computed by applying the U.S. statutory federal tax rate of 21 % for each of the fiscal years ended September 30, 2022 and 2021 as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Expense (benefit) for U.S federal income tax at statutory rate $ ( 4,763 ) $ ( 2,834 ) Effect of foreign income taxes 3 1 Research and experimentation tax credit 6 ( 223 ) State income taxes, net of federal income tax benefit ( 265 ) 153 Nondeductible expenses 927 44 Change in valuation allowance 3,768 2,893 Impact on deferred taxes due to change in tax rate - 563 Change in fair value of contingent consideration ( 278 ) ( 569 ) Foreign income tax withholding 114 419 Disallowance of stock compensation adjustments in excess of book 217 334 Other items 444 ( 203 ) $ 173 $ 578 Effective tax rate ( 0.8 )% ( 4.3 )% The income tax expense for fiscal years 2022 and 2021 primarily reflects withholding tax on rental income earned in foreign jurisdictions. The Company is currently unable to record any tax benefits for its tax losses in the U.S., Canada and the Russian Federation due to the uncertainty surrounding its ability to utilize such losses in the future to offset taxable income. Deferred income taxes reflect the net tax effects 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 net deferred income tax assets (liabilities) were as follows (in thousands): AS OF SEPTEMBER 30, 2022 AS OF SEPTEMBER 30, 2021 U.S. Non U.S. Total U.S. Non U.S. Total Deferred income tax assets: Allowance for doubtful accounts $ 109 $ 6 $ 115 $ 80 $ 4 $ 84 Inventories 8,295 218 8,513 8,042 — 8,042 Loss and tax credit carry-forwards 29,606 5,037 34,643 27,578 4,945 32,523 Stock-based compensation 262 — 262 398 — 398 Accrued product warranty 99 8 107 77 2 79 Contingent earn-out consideration — — — 917 — 917 Accrued compensated absences 347 — 347 320 — 320 Property and equipment — 578 578 — 487 487 Prepaid income taxes — 92 92 — 266 266 Other reserves 30 15 45 114 11 125 Subtotal deferred income tax assets 38,748 5,954 44,702 37,526 5,715 43,241 Valuation allowance ( 35,462 ) ( 5,914 ) ( 41,376 ) ( 31,668 ) ( 5,704 ) ( 37,372 ) Net deferred income tax assets 3,286 40 3,326 5,858 11 5,869 Deferred income tax liabilities: Allowance for doubtful accounts — — — — — — Inventories — — — — ( 6 ) ( 6 ) Right-of-use assets ( 109 ) — ( 109 ) ( 131 ) — ( 131 ) Intangible assets ( 356 ) — ( 356 ) ( 642 ) — ( 642 ) Property, plant and equipment and other ( 2,821 ) ( 53 ) ( 2,874 ) ( 5,085 ) ( 36 ) ( 5,121 ) Total deferred income tax liabilities ( 3,286 ) ( 53 ) ( 3,339 ) ( 5,858 ) ( 42 ) ( 5,900 ) Net deferred income tax liabilities $ — $ ( 13 ) $ ( 13 ) $ — $ ( 31 ) $ ( 31 ) The financial reporting basis of investments in foreign subsidiaries exceed their tax basis. A deferred tax liability is not recorded for this temporary difference because the investment is deemed to be permanent. A reversal of the Company’s plans to permanently invest in these foreign operations would cause the excess to become taxable. At September 30, 2022, the Company had $ 2.6 million of cash and cash equivalents held by its foreign subsidiaries. At September 30, 2022 and 2021, the temporary difference related to undistributed earnings for which no deferred taxes have been provided was approximately $ 6.9 million and $ 6.5 million, respectively. Tax return filings which are subject to review by local tax authorities by major jurisdiction are as follows: • United States—fiscal years ended September 30, 2019 through 2022 • State of Texas—fiscal years ended September 30, 2019 through 2022 • State of New York—fiscal year ended September 30, 2020 • State of California – fiscal years ended September 30, 2019 through 2022 • State of Pennsylvania – fiscal year ended September 30, 2019 • Russian Federation—calendar years 2020 through 2022 • Canada—fiscal years ended September 30, 2019 through 2022 • United Kingdom—fiscal years ended September 30, 2021 through 2022 • Colombia—calendar years 2020 through 2022 The Company had no unrecognized tax liabilities as of September 30, 2022 and 2021. As of September 30, 2022, the Company had net operating loss (“NOL”) carry-forwards of approximately $ 106.2 million in the United States, $ 19.8 million in Canada and $ 2.3 million in Russia which are available to offset future taxable income in those jurisdictions. The NOL carry-forwards for Canada and Russia begin to expire in 2033 and 2026 , respectively. The NOL carry-forward for the United States which originated prior to the 2017 Tax Act of $ 28.0 million begins to expire in 2028 . The Company’s NOLs originating after the 2017 Tax Act of $ 77.9 million do not expire. The Company has not completed a Section 382 limitation study which may prevent it from using its NOLs in the future. Management of the Company has concluded that it is more-likely-than-not that its U.S., Canadian and Russian net deferred tax assets will not be realized in accordance with GAAP. At September 30, 2022 and 2021, the Company had a valuation allowance against its U.S. net deferred tax assets of $ 35.5 million and $ 31.7 million, respectively. At September 30, 2022 and 2021, the Company had a valuation allowance against Canadian net deferred tax assets of $ 5.2 million, and $ 5.4 million, respectively. At September 30, 2022 and 2021, the Company had a valuation allowance against its Russian net deferred tax assets of $ 0.7 million and $ 0.3 million, respectively.

Loss Per Common Share

Loss Per Common Share	12 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Loss Per Common Share	17. Loss Per Common Share Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of common shares used in basic loss per share during the period. Diluted loss per share is determined on the assumption that outstanding RSUs have been exchanged for common stock and outstanding dilutive stock options have been exercised and the aggregate proceeds as defined were used to reacquire common stock using the average price of such common stock for the period. The following table summarizes the calculation of net loss and weighted average common shares and common equivalent shares outstanding for purposes of the computation of loss per share (in thousands, except share and per share amounts): YEAR ENDED SEPTEMBER 30, 2022 2021 Net loss $ ( 22,856 ) $ ( 14,056 ) Less: Loss allocable to unvested restricted stock — — Loss attributable to common shareholders $ ( 22,856 ) $ ( 14,056 ) Weighted average number of common share equivalents: Common shares used in basic loss per share 12,987,996 13,358,930 Common share equivalents outstanding related to — — Total weighted average common shares and common share 12,987,996 13,358,930 Loss per shares: Basic $ ( 1.76 ) $ ( 1.05 ) Diluted $ ( 1.76 ) $ ( 1.05 ) For the calculation of diluted loss per share for fiscal years 2022 and 2021, stock options of zero and 38,800 , respectively, and RSUs of 323,859 and 299,374 , respectively, were excluded in the calculation of weighted average shares outstanding as a result of their impact being antidilutive.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	18. Commitments and Contingencies Contingent Consideration In connection with its acquisitions of Quantum and the OptoSeis ® fiber optic sensing technology business, the Company recorded contingent purchase price payments, or contingent consideration, that may be owed in the future. For both acquisitions, the contingent payments are based on future receipt of contract awards and the resulting revenue derived from such contracts. The Company reviews and assesses the fair value of its contingent consideration on a quarterly basis. The determination of fair value is inherently unpredictable since it requires estimates and projections of future revenue, including the size, length, timing and, in the case of Quantum, the extent of gross profits earned under its future contracts. As a result, the Company anticipates fair value adjustments to these liabilities over the respective earn-out periods, and these adjustments will result in either charges or credits to the Company’s operating expenses when the fair value of the contingent consideration increases or decreases, respectively. The Company recorded an initial contingent consideration liability of $ 7.7 million in connection with its July 2018 acquisition of Quantum. Contingent payments, if any, may be paid in the form of cash or Company stock and will be derived from eligible revenue generated during a four-year earn-out period, which ended in July 2022 . The maximum amount of contingent payments was $ 23.5 million over the four-year earn-out period. In fiscal year 2020, the Company made cash contingent consideration payments of $ 0.1 million to the former shareholders of Quantum. In September 2021 and October 2021, the Company made additional cash earn-out payments of $ 1.4 million and $ 0.8 million, respectively, to the former shareholders of Quantum. The payments were primarily attributable to revenue earned on Quantum’s $ 10.5 million contract with the CBP to provide a technology solution to the Department of Homeland Security. At September 30, 2021, the contingent consideration liability was valued at $ 0.8 million related to projected future eligible revenue. During the fiscal year ended September 30, 2022, the Company recorded an adjustment of $ 0.6 million to decrease the liability to $ 0.2 million. The decrease for the fiscal year ended September 30, 2022 was primarily the result of timing in securing a potential second contract with the CBP caused by federal budget delays. In November 2022, the Company made a final payment of $ 0.2 million to the former shareholders of Quantum and has no further earn-out obligations related to this acquisition. The Company recorded an initial contingent consideration liability of $ 4.3 million in connection with its November 2018 acquisition of all the intellectual property and related assets of the OptoSeis ® fiber optic sensing technology. Contingent cash payments, if any, will be derived from eligible revenue generated during a five-and-a-half year earn-out period ending in May 2024 . In order for revenue to be considered eligible, sales contracts must be entered into during the first four years of the earn-out period ending November 13, 2022. The maximum amount of contingent payments is $ 23.2 million over the five-and-a-half year earn-out period. At September 30, 2021, the contingent consideration liability was valued at $ 4.4 million. During the fiscal year ended September 30, 2022, the Company recorded an adjustment of $ 4.4 million to decrease the liability to zero . The decrease for the fiscal year ended September 30, 2022 was the result of the unlikelihood of entering into a sales contract prior to the eligibility date. No sales contracts were entered into by the November 13, 2022 eligibility date. The Company had no further earn-out obligations related to this acquisition. Contingent Compensation Costs In connection with the acquisition of Aquana in July 2021, the Company is subject to additional contingent cash payments to the former members of Aquana over a six-year earn-out period. The contingent payments, if any, will be derived from certain eligible revenue generated during the earn-out period from products and services sold by Aquana. There is no maximum limit to the contingent cash payments that could be made. The merger agreement with Aquana requires the continued employment of a certain key employee and former member of Aquana for the first four years of the six year earn-out period in order for any of Aquana’s former members to be eligible to any earn-out payments. As discussed in Note 3, due to the continued employment requirement, no liability has been recorded for the estimated fair value of contingent earn-out payments for this transaction. Earn-outs achieved, if any, will be recorded as compensation expense when incurred. Legal Proceedings The Company is involved in various pending legal actions in the ordinary course of its business. Management is unable to predict the ultimate outcome of these actions, because of the inherent uncertainty of such actions. However, management believes that the most probable, ultimate resolution of current pending matters will not have a material adverse effect on the Company’s consolidated financial position, results of operations or cash flows.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Sep. 30, 2022
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	19. Supplemental Cash Flow Information Supplemental cash flow information is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Cash paid for income taxes $ 169 $ 551 Non-cash investing and financing activities: Inventory transferred to rental equipment 1,148 4,038 Inventory transferred to property, plant and equipment 172 286 Issuance of notes receivables in connection with sale of used rental equipment 11,745 2,665

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Segment and Geographic Information	20 . Segment and Geographic Information The Company reports and evaluates financial information for three operating business segments: Oil and Gas Markets, Adjacent Markets and Emerging Markets. The Oil and Gas Markets segment’s products include wireless seismic data acquisition systems, reservoir characterization products and services, and traditional seismic exploration products such as geophones, hydrophones, leader wire, connectors, cables, marine streamer retrieval and steering devices and various other seismic products. The Adjacent Markets segment’s products include imaging equipment, water meter products, remote shut-off valves and IoT platform, as well as seismic sensors used for vibration monitoring and geotechnical applications such as mine safety applications and earthquake detection. The Emerging Markets segment designs and markets seismic products targeted at the border and perimeter security markets. The following tables summarize the Company’s segment information: YEAR ENDED SEPTEMBER 30, 2022 2021 Revenue: Oil and Gas Markets $ 49,141 $ 52,252 Adjacent Markets 39,171 32,419 Emerging Markets 711 10,193 Corporate 230 — Total 89,253 94,864 Income (loss) from operations: Oil and Gas Markets ( 7,539 ) ( 16,229 ) Adjacent Markets 6,021 6,423 Emerging Markets ( 9,128 ) 5,033 Corporate ( 12,490 ) ( 12,098 ) Total ( 23,136 ) ( 16,871 ) Depreciation and amortization expenses: Oil and Gas Markets 16,947 18,199 Adjacent Markets 743 440 Emerging Markets 1,068 1,209 Corporate 802 929 Total 19,560 20,777 Impairment, inventory obsolescence and stock-based compensation expenses: Oil and Gas Markets 3,612 3,850 Adjacent Markets 932 223 Emerging Markets 4,423 100 Corporate 727 798 Total 9,694 4,971 Interest income: Oil and Gas Markets 850 1,409 Adjacent Markets — 1 Emerging Markets — — Corporate 126 31 Total 976 1,441 Interest expense: Oil and Gas Markets 65 — Adjacent Markets — — Emerging Markets — — Corporate — — Total 65 — The Company’s manufacturing operations for its business segments are combined. Therefore, the Company does not segregate and report separate balance sheet accounts for each of its segments and, therefore, no such segment balance sheet information is presented in the table above. “Corporate” loss from operations primarily consists of the Company’s Houston headquarters general and administrative expenses. The Company generates revenue from product sales, product rentals and services from its subsidiaries located in the United States, Canada, Colombia, the Russian Federation and the United Kingdom. Revenue generated by the Company’s subsidiaries is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 United States $ 82,332 $ 88,776 Canada 1,615 1,132 Russian Federation 1,922 1,746 United Kingdom 3,384 3,210 $ 89,253 $ 94,864 A summary of revenue by geographic area is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Africa $ 471 $ 2,507 Asia 13,823 23,299 Canada 1,225 997 Europe 28,381 13,801 South America 7,547 2,514 United States 35,171 49,541 Other 2,635 2,205 $ 89,253 $ 94,864 Revenue is attributed to countries based on the ultimate destination of the product sold, if known. If the ultimate destination is not known, revenue is attributed to countries based on the geographic location of the initial shipment. Long-lived assets were as follows (in thousands): AS OF SEPTEMBER 30, 2022 2021 United States $ 71,742 $ 98,395 Canada 1,459 3,653 Colombia 449 590 Russian Federation 1,010 689 United Kingdom 422 559 China 13 13 $ 75,095 $ 103,899

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Sep. 30, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	Schedu le II Geospace Technologies Corporation and Subsidiaries Valuation and Qualifying Accounts (In thousands) Balance at Charged to Charged (Deductions) Balance at Year ended September 30, 2022 Allowance for doubtful accounts on accounts and financing $ 428 $ 292 $ — $ ( 129 ) $ 591 Year ended September 30, 2021 Allowance for doubtful accounts on accounts and financing $ 496 $ ( 76 ) $ — $ 8 $ 428 Balance at Charged to Charged (Deductions) Balance at Year ended September 30, 2022 Inventory obsolescence reserve $ 36,936 $ 3,222 $ — $ ( 787 ) $ 39,371 Year ended September 30, 2021 Inventory obsolescence reserve $ 34,960 $ 3,001 $ — $ ( 1,025 ) $ 36,936

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying financial statements present the consolidated financial position, results of operations and cash flows of the Company in accordance with U.S. generally accepted accounting principles ("GAAP'). All significant intercompany balances and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the use of estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The Company considers many factors in selecting appropriate operational and financial accounting policies and controls, and in developing the estimates and assumptions that are used in the preparation of these financial statements. The Company continually evaluates its estimates, including those related to revenue recognition, bad debt reserves, collectability of rental revenue, inventory obsolescence reserves, self-insurance reserves, product warranty reserves, useful lives of long-lived assets, impairment of long-lived assets, impairment of goodwill and other intangible assets, contingent consideration and deferred income tax assets. The Company bases its estimates on historical experience and various other factors that are believed to be reasonable under the circumstances. While management believes current estimates are reasonable and appropriate, actual results may differ from these estimates under different conditions or assumptions.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly-liquid investments purchased with an original or remaining maturity at the time of purchase of three months or less to be cash equivalents. At September 30, 2022, the Company had restricted cash of $ 0.2 million on deposit with a bank which serves as collateral on employee issued credit cards. The Company had no restricted cash at September 30, 2021. At September 30, 2022, cash and cash equivalents included $ 2.6 million held by the Company’s foreign subsidiaries and branch offices, including $ 1.8 million held by its subsidiary in the Russian Federation. In response to sanctions imposed by the U.S. and others on Russia, the Russian government has imposed restrictions on companies’ abilities to repatriate or otherwise remit cash from their Russian-based operations to locations outside of Russia. As a result, this cash can be used in our Russian operations, but the Company may be unable to transfer it out of Russia without incurring substantial costs, if at all. In addition, if the Company were to repatriate the cash held by its Russian subsidiary, it would be required to accrue and pay taxes on any amount repatriated.
Concentrations of Risk	Concentrations of Risk Credit The Company maintains its cash in bank deposit accounts that, at times, exceed federally insured limits. Management of the Company believes that the financial strength of the financial institutions holding such deposits minimizes the credit risk of such deposits. The Company sells products to customers throughout the United States and various foreign countries. The Company’s normal credit terms for trade receivables are 30 days. In certain situations, credit terms may be extended to 60 days or longer. The Company performs ongoing credit evaluations of its customers and generally does not require collateral for its trade receivables. Additionally, the Company provides long-term financing in the form of promissory notes and sales-type leases when competitive conditions require such financing. In such cases, the Company may require collateral. Allowances are recognized for potential credit losses. One customer comprised 29.3 % of the Company’s revenue during fiscal year 2022. At September 30, 2022, the Company had trade accounts and financing receivables from this customer of $ 5.5 million. Three customers comprised 19.8 %, 16.4 % and 10.6 %, of the Company’s revenue during fiscal year 2021. At September 30, 2021, the Company had trade accounts and financing receivables from these customers of $ 4.9 million, $ 7.4 million and $ 1.1 million, respectively. Supplier Certain models of the Company’s oil and gas marine wireless products require a timing device it purchases from a United States manufacturer. The Company currently does not possess the ability to manufacture this component and has no other reliable source for this device. If this manufacturer were to discontinue its production of this timing device, were to become unwilling to contract with the Company on competitive terms or were unable to supply the component in sufficient quantities to meet its requirements, the Company’s ability to compete in the marine wireless marketplace could be impaired, which could adversely affect its financial performance. The device is used in certain models of the Company’s rental equipment. Product sales requiring this device represented approximately 11 % of the Company's revenue in fiscal year 2022. There were no product sales requiring this device in fiscal year 2021. The Company purchases all of its thermal film from one manufacturer for its imaging products. Except for the film sold to the Company by this manufacturer, the Company knows of no other source for thermal film that performs as well in its imaging equipment. If the manufacturer were to discontinue producing thermal film, were to become unwilling to contract with the Company on competitive terms or were unable to supply thermal film in sufficient quantities to meet its requirements, the Company’s ability to compete in the direct thermal imaging marketplace could be impaired, which could adversely affect its financial performance. Thermal film sales represented approximately 8 % and 7 % of the Company’s revenue in fiscal year 2022 and 2021, respectively. Armed Conflict Between Russia and Ukraine A portion of the Company's oil and gas product manufacturing is conducted through its wholly-owned subsidiary Geospace Technologies Eurasia LLC, which is based in the Russian Federation. In February 2022, the Russian Federation launched a full-scale military invasion of Ukraine. Although the length and impact of the ongoing military conflict is highly unpredictable, the conflict in Ukraine could lead to market disruptions, including significant volatility in commodity prices, credit and capital markets, as well as supply chain interruptions in addition to any direct impact on the Company's operations in Russia. The United States, the United Kingdom, the EU and other countries have each imposed export controls on certain products and financial and economic sanctions on certain industry sectors and parties in and associated with Russia, and additional sanction packages to constrain Russia have been and continue to be proposed and adopted. United States sanctions against Russia have been expanded to preclude the export of oil and gas equipment anywhere in the world that involve persons designated under the sanctions and to include projects in which persons subject to the sanctions have a 33 % ownership interest or a majority of voting interests. The rapid changes in rules and implementation of new rules on imports and exports of goods involving Russia has also led to serious delays in getting goods to or from Russia as port authorities struggle to keep up with the changing environment. If imports of these products from the Russian Federation are restricted by government regulation, the Company may be forced to find other sources for the manufacturing of these products at potentially higher costs. Likewise, restrictions on the Company's ability to send products to our subsidiary in Russia, may force our subsidiary to have to find other sources for the manufacturing of these products at potentially higher costs; however, the Company's exports to Geospace Technologies Eurasia LLC have historically been limited. The risk of doing business in the Russian Federation and other economically or politically volatile areas could adversely affect the Company's operations and earnings. The Company is actively monitoring the situation in Ukraine and Russia and assessing its impact on its business, including its wholly-owned subsidiary Geospace Technologies Eurasia LLC. The net carrying value of this subsidiary on the Company's consolidated balance sheet at September 30, 2022 was $ 6.0 million. The subsidiary generated $ 1.9 million in revenue from domestic sales and the Company imported $ 1.9 million of products from the subsidiary in fiscal year 2022. The Company has no way to predict the duration, progress or outcome of the military conflict in Ukraine. The extent and duration of the military action, sanctions, and resulting market disruptions could be significant and could potentially have substantial impact on the global economy and the Company's business for an unknown period of time.
Inventories	Inventories The Company records a write-down of its inventories when the cost basis of any manufactured product, including any estimated future costs to complete the manufacturing process, exceeds its net realizable value. Inventories are stated at the lower of cost or net realizable value. Cost is determined on the first-in, first-out method, except that certain of the Company’s foreign subsidiaries use an average cost method to value their inventories. The Company periodically reviews the composition of its inventories to determine if market demand, product modifications, technology changes, excessive quantities on-hand and other factors hinder our ability to recover its investment in such inventories. The Company’s assessment is based upon historical product demand, estimated future product demand and various other judgments and estimates. Inventory obsolescence reserves are recorded when such assessments reveal that portions or components of the Company’s inventory investment will not be realized in its operating activities. The Company reviews it inventories for classification purposes. The value of inventories not expected to be realized in cash, sold or consumed during its next operating cycle are classified as noncurrent assets.
Property, Plant and Equipment and Rental Equipment	Property, Plant and Equipment and Rental Equipment Property, plant and equipment and rental equipment are stated at cost. Depreciation expense is calculated using the straight-line method over the following estimated useful lives: Years Rental equipment 2 - 5 Property, plant and equipment: Machinery and equipment 3 - 15 Buildings and building improvements 10 - 50 Other 5 - 10 Expenditures for renewals and betterments are capitalized. Repairs and maintenance expenditures are charged to expense as incurred. The cost and accumulated depreciation of assets sold or otherwise disposed of are removed from the accounts and any gain or loss thereon is reflected in the statements of operations.
Impairment of Long-lived Assets	Impairment of Long-lived Assets The Company’s long-lived assets are reviewed for impairment whenever an event or change in circumstances indicates the carrying amount of an asset or group of assets may not be recoverable. The impairment review, if necessary, includes a comparison of expected future cash flows (undiscounted and without interest charges) to be generated by an asset group with the associated carrying value of the related assets. If the carrying value of the asset group exceeds the expected future cash flows, an impairment loss is recognized to the extent that the carrying value of the asset group exceeds its fair value. At March 31, 2022, in light of the Company’s losses from operations for the six months ended March 31, 2022 and for fiscal year 2021 and the current war between Russia and Ukraine, management reviewed the recoverability of the carrying value of certain asset groups based on future undiscounted cash flows and determined that their expected future cash flows exceeded their carrying value. No additional indicators of impairment related to this asset group were observed at September 30, 2022. At September 30, 2022, in light of the Company's impairment of its goodwill associated with its Emerging Markets reporting unit, the Company reviewed the recoverability of the carrying value of the long-lived assets of this reporting unit and determined that their undiscounted cash flows exceeded their carrying value. As a result, no impairment charges were necessary to the Company's long-lived assets associated with its Emerging Markets reporting unit. At September 30, 2022, in light of the Company's decision to dispose of certain manufacturing cabling equipment, the Company reviewed the recoverability of the carrying value of these assets and determined that their carrying value exceeded their fair value. As a result of the fair value analysis, an impairment charge of $ 0.4 million was recorded in the fourth quarter of fiscal year 2022 related to the equipment. The impairment charge is included as a component of cost of revenue in the Company’s consolidated statements of operations.
Goodwill	Goodwill The Company conducts its evaluation of goodwill at the reporting unit level on an annual basis as of September 30 and more frequently if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. The guidance on the testing of goodwill for impairment provides the option to first assess qualitative factors to determine if the fair value of a reporting unit exceeds its carrying amount. If, based on the qualitative assessment of events or circumstances, an entity determines it is more likely than not that the fair value of a reporting unit is more than its carrying amount then it is not necessary to perform a quantitative assessment. However, if an entity concludes otherwise, then a quantitative assessment must be performed. If, based on the quantitative assessment, the Company determines that the fair value of a reporting unit is less that its carrying amount, a goodwill impairment is recognized equal to the difference between the carrying amount of the reporting unit and its fair value, not to exceed the carrying amount of the goodwill. At September 30, 2022, the Company impaired its goodwill associated with its Emerging Markets reporting unit. See Note 11 for more information.
Other Intangible Assets	Other Intangible Assets Intangible assets are carried at cost, net of accumulated amortization. The estimated useful life of the Company’s other intangible assets are evaluated each reporting period to determine whether events or circumstances warrant a revision to the remaining amortization period. If the estimate of an intangible asset’s remaining useful life is changed, the amortization period should be changed prospectively. Amortization expense is calculated using the straight-line method over the following estimated useful lives: Years Developed technology 18 Trade names 5 Customer relationships 4 Non-compete agreements 4
Revenue Recognition	Revenue Recognition See Note 2 to these consolidated financial statements.
Contingent Consideration	Contingent Consideration The Company established earn-out liabilities in connection with its business acquisitions in fiscal year 2018 and 2019. The Company engaged the services of a valuation firm to measure the initial fair value of the earn-out liabilities as of the acquisition date for each business. The valuation technique used to measure the fair value of the liability was derived from models utilizing market observable inputs, internal estimates and the use of internal projections of future revenue and/or gross profits. The Company reviews the fair value of its contingent earn-out liabilities on a quarterly basis. Adjustments to the liabilities are included as a component of earnings in the consolidated statements of operations. See Note 18 to these consolidated financial statements for additional information.
Research and Development Costs	Research and Development Costs The Company expenses research and development costs as incurred. Research and development costs include salaries, employee benefit costs, department supplies, direct project costs and other related costs.
Product Warranties	Product Warranties Most of the Company’s products do not require installation assistance or sophisticated instructions. The Company offers a standard product warranty obligating it to repair or replace equipment with manufacturing defects. The Company maintains a reserve for future warranty costs based on historical experience or, in the absence of historical product experience, management’s estimates. Reserves for future warranty costs are included within other current liabilities on the consolidated balance sheets. Changes in the product warranty reserve are reflected in the following table (in thousands): Balance at October 1, 2020 $ 258 Accruals for warranties issued during the year 814 Settlements made (in cash or in kind) during the year ( 693 ) Balance at September 30, 2021 379 Accruals for warranties issued during the year 1,431 Settlements made (in cash or in kind) during the year ( 1,286 ) Balance at September 30, 2022 $ 524
Stock-Based Compensation	Stock-Based Compensation The Company accounts for stock-based compensation, including grants of restricted awards and unqualified stock options in accordance with Accounting Standards Codification Topic 718, which requires that all share-based payments (to the extent that they are compensatory) be recognized as an expense in the Company’s consolidated statements of operations based on their fair values on the award date and the estimated number of shares it ultimately expects to vest. The Company recognizes stock-based compensation expense on a straight-line basis over the requisite service period of the award. The Company’s stock-based compensation plan and awards are more fully described in Note 15 to these consolidated financial statements.
Foreign Currency Gains and Losses	Foreign Currency Gains and Losses The assets and liabilities of the Company’s foreign subsidiaries and branch offices that have a foreign currency as their functional currency have been translated into U.S. dollars using the exchange rates in effect at the balance sheet date. Results of operations have been translated using the average exchange rates during the year. Resulting translation adjustments have been recorded as a component of accumulated other comprehensive loss in stockholders’ equity. Foreign currency transaction gains and losses are included in the statements of operations as they occur. Transaction gains and losses on intra-entity foreign currency transactions and balances, including advances and demand notes payable on which settlement is not planned or anticipated in the foreseeable future, are recorded in “accumulated other comprehensive loss” on our consolidated balance sheets.
Fair Value	Fair Value Fair value is the price that would be received to sell an asset or the amount paid to transfer a liability in an orderly transaction between market participants (an exit price) at the measurement date. GAAP has established a fair value hierarchy which prioritizes the inputs to the valuation techniques used to measure fair value into three levels. These levels are determined based on the lowest level input that is significant to the fair value measurement. Level 1 represents unadjusted quoted prices in active markets for identical assets and liabilities. Level 2 represents quoted prices for similar assets and liabilities in active markets (other than those included in Level 1) which are observable, either directly or indirectly. Level 3 represents valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Also see Note 5 to these consolidated financial statements.
Income Taxes	Income Taxes Income taxes are presented in accordance with the Accounting Standards Codification Topic 740 (“Topic 740”) guidance for accounting for income taxes. The estimated future tax effects of temporary differences between the tax basis of assets and liabilities and amounts reported in the accompanying consolidated balance sheets, as well as operating loss and tax credit carrybacks and carryforwards are recorded. Deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities (temporary differences) and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The Company periodically reviews the recoverability of tax assets recorded on the balance sheet and provides valuation allowances if it is more likely than not that such assets will not be realized. The Company follows the guidance of Topic 740 to analyze all tax positions that are less than certain. Topic 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. In accordance with Topic 740, the Company recognizes in its financial statements the impact of a tax position if that position is “more likely than not” to be sustained on audit, based on the technical merits of the position. The Company’s estimate of the potential outcome of any uncertain tax issue is subject to management’s assessment of relevant risks, facts, and circumstances existing at that time. The Company classifies interest and penalties associated with the payment of income taxes, if any, in the Other Income (Expense) section of its consolidated statements of operations. The Company incurred no interest or penalties for the fiscal years ended September 30, 2022 and 2021.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In December 2019, the Financial Accounting Standards Board (the “FASB”) issued guidance on simplifying the accounting for income taxes. The guidance eliminates certain exceptions to the general principles in Topic 740 and clarifies and amends existing guidance to improve consistent application. This guidance is effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2020. The Company adopted this standard during the first quarter of fiscal year 2022 . The adoption of this guidance did not have any impact on the Company's consolidated financial statements.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In June 2016, the FASB issued guidance surrounding credit losses for financial instruments that replaces the incurred loss impairment methodology in generally accepted accounting principles. The new impairment model requires immediate recognition of estimated credit losses expected to occur for most financial assets and certain other financial instruments. For available-for-sale debt securities with unrealized losses, credit losses will be recognized as allowances rather than reductions in the amortized cost of the securities. As a smaller reporting company, the Company must adopt this standard no later than the first quarter of its fiscal year ending September 30, 2024, although early adoption is permitted. The standard’s provisions will be applied as a cumulative-effect adjustment to retained earnings as of the beginning of the first effective reporting period. The Company intends to adopt this standard during the first quarter of its fiscal year ending September 30, 2024 and is continuing to evaluate the impact of this new guidance on its consolidated financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Property, Plant and Equipment Estimated Useful Life	Property, plant and equipment and rental equipment are stated at cost. Depreciation expense is calculated using the straight-line method over the following estimated useful lives: Years Rental equipment 2 - 5 Property, plant and equipment: Machinery and equipment 3 - 15 Buildings and building improvements 10 - 50 Other 5 - 10
Schedule of Estimated Useful Lives of Other Intangible Assets	Amortization expense is calculated using the straight-line method over the following estimated useful lives: Years Developed technology 18 Trade names 5 Customer relationships 4 Non-compete agreements 4
Changes in Product Warranty Reserve	Changes in the product warranty reserve are reflected in the following table (in thousands): Balance at October 1, 2020 $ 258 Accruals for warranties issued during the year 814 Settlements made (in cash or in kind) during the year ( 693 ) Balance at September 30, 2021 379 Accruals for warranties issued during the year 1,431 Settlements made (in cash or in kind) during the year ( 1,286 ) Balance at September 30, 2022 $ 524

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Summary of Revenue from the Sale of Products and Performance of Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Operating Segments	For each of the Company’s operating segments, the following table presents revenue only from the sale of products and the performance of services under contracts with customers (in thousands). Therefore, the table excludes all revenue earned from rental contracts. YEAR ENDED SEPTEMBER 30, 2022 2021 Oil and Gas Markets Traditional exploration product revenue $ 6,558 $ 4,518 Wireless exploration product revenue 15,822 27,016 Reservoir product revenue 1,968 1,877 Total revenue 24,348 33,411 Adjacent Markets Industrial product revenue 25,640 21,335 Imaging product revenue 13,360 10,925 Total revenue 39,000 32,260 Emerging Markets Revenue 711 10,193 Corporate Revenue 50 — Total $ 64,109 $ 75,864
Summary of Revenue from the Sale of Products and Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Geographic Areas	For each of the geographic areas where the Company operates, the following table presents revenue from the sale of products and performance of services under contracts with customers (in thousands). Therefore, the table excludes all revenue earned from rental contracts. YEAR ENDED SEPTEMBER 30, 2022 2021 Asia $ 10,978 $ 17,268 Canada 890 1,550 Europe 15,705 7,693 South America 719 287 United States 33,778 47,101 Other 2,039 1,965 $ 64,109 $ 75,864

Investments (Tables)

Investments (Tables)	12 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Summary of Short-Term Investments	The Company’s short-term investments were composed of the following (in thousands): AS OF SEPTEMBER 30, 2022 Amortized Unrealized Unrealized Estimated Short-term investments: Corporate bonds $ 909 $ — $ ( 15 ) $ 894 Total $ 909 $ — $ ( 15 ) $ 894 AS OF SEPTEMBER 30, 2021 Amortized Unrealized Unrealized Estimated Short-term investments: Corporate bonds $ 9,511 $ — $ ( 15 ) $ 9,496 Total $ 9,511 $ — $ ( 15 ) $ 9,496

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value of Company's Short-Term Investment and Contingent Consideration by Valuation Hierarchy	The following tables present the fair value of the Company’s short-term investments and contingent consideration by valuation hierarchy and input (in thousands): AS OF SEPTEMBER 30, 2022 Quoted Prices Assets Significant Significant Totals Short-term investments: Corporate bonds $ — $ 894 $ — $ 894 Total assets $ — $ 894 $ — $ 894 Contingent consideration liabilities $ — $ — $ 175 $ 175 Total liabilities $ — $ — $ 175 $ 175 AS OF SEPTEMBER 30, 2021 Quoted Prices Assets Significant Other Significant Totals Short-term investments: Corporate bonds $ — $ 9,496 $ — $ 9,496 Total assets $ — $ 9,496 $ — $ 9,496 Contingent consideration liabilities: Current portion $ — $ — $ 807 $ 807 Non-current portion — — 5,210 5,210 Total liabilities $ — $ — $ 6,017 $ 6,017
Changes in Fair Value of Company Level 3 Financial Instruments	The following table summarizes changes in the fair value of the Company’s Level 3 financial instruments for the fiscal years ended September 30, 2022 and 2021: Contingent Consideration balance at October 1, 2020 $ 10,962 Fair value adjustments ( 3,524 ) Payment of contingent consideration ( 1,421 ) Balance at September 30, 2021 6,017 Fair value adjustments ( 5,035 ) Payment of contingent consideration ( 807 ) Balance at September 30, 2022 $ 175

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Sep. 30, 2022
Stockholders' Equity Note [Abstract]
Accumulated Other Comprehensive Loss	Accumulated other comprehensive loss consisted of the following (in thousands): Unrealized Foreign Total Balance at October 1, 2020 $ — $ ( 16,698 ) $ ( 16,698 ) Other comprehensive income (loss) ( 15 ) 393 378 Balance at September 30, 2021 $ ( 15 ) ( 16,305 ) ( 16,320 ) Other comprehensive income — 1,007 1,007 Balance at September 30, 2022 $ ( 15 ) $ ( 15,298 ) $ ( 15,313 )

Trade Accounts and Financing _2

Trade Accounts and Financing Receivables (Tables)	12 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Trade Accounts Receivable, Net	Trade accounts receivable, net (excluding financing receivables) are reflected in the following table (in thousands): AS OF SEPTEMBER 30, 2022 2021 Trade accounts receivable $ 13,252 $ 12,635 Allowance for doubtful accounts ( 591 ) ( 428 ) $ 12,661 $ 12,207
Financing Receivables	Financing receivables are reflected in the following table (in thousands): AS OF SEPTEMBER 30, 2022 2021 Promissory notes $ 8,225 $ 5,432 Sales-type lease — 2,464 Total financing receivables 8,225 7,896 Unearned income: Sales-type lease — ( 6 ) Total unearned income — ( 6 ) Total financing receivables, net of unearned income 8,225 7,890 Less current portion ( 8,225 ) ( 4,952 ) Non-current notes receivable $ — $ 2,938

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Sep. 30, 2022
Inventory Disclosure [Abstract]
Inventories	Inventories consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Finished goods $ 14,653 $ 14,968 Work in process 6,230 8,247 Raw materials 25,609 24,720 Obsolescence reserve (net realizable value adjustment) ( 13,971 ) ( 13,636 ) 32,521 34,299 Less current portion 19,995 16,196 Non-current portion $ 12,526 $ 18,103

Leases (Tables)

Leases (Tables)	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Summary of Maturities of Operating Lease Liabilities	Maturities of the operating lease liabilities as of September 30, 2022 were as follows (in thousands): For fiscal years ending September 30, 2023 $ 270 2024 278 2025 186 2026 130 2027 134 2028 91 Future minimum lease payments $ 1,089 Less interest ( 79 ) Present value of minimum lease payments $ 1,010 Less current portion ( 241 ) Long-term portion $ 769
Summary of Lease Costs	Lease costs recognized in the consolidated statements of operations for the fiscal years ended September 30, 2022 and 2021 is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Right-of-use operating lease costs $ 272 $ 246 Short-term lease costs 190 239 Total $ 462 $ 485
Summary of Other Information Related to Operating Leases	Other information related to operating leases is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 262 $ 211 Operating lease assets obtained in exchange for new lease liabilities — 1,336 Weighted average remaining lease term 4.7 years 5.6 years Weighted average discount rate 3.25 % 3.25 %
Rental Equipment	Rental equipment consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Rental equipment, primarily wireless recording equipment $ 83,887 $ 95,827 Accumulated depreciation and impairment ( 55,688 ) ( 56,922 ) $ 28,199 $ 38,905
Future Minimum Lease Payment	Future minimum lease payments due to the Company as of September 30, 2022 were as follows (in thousands): For fiscal years ending September 30, 2023 $ 136 2024 128 2025 131 2026 132 2027 11 $ 538

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Land and land improvements $ 7,855 $ 7,932 Building and building improvements 24,588 24,646 Machinery and equipment 59,393 56,828 Furniture and fixtures 1,434 1,417 Tools and molds 3,243 3,036 Construction in progress 341 2,288 Transportation equipment 74 75 96,928 96,222 Accumulated depreciation and impairment ( 70,330 ) ( 66,239 ) $ 26,598 $ 29,983

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Other Intangible Assets	The Company’s consolidated goodwill and other intangible assets consisted of the following (in thousands): Weighted-Average Remaining Useful Lives (in years) AS OF SEPTEMBER 30, 2022 2021 Goodwill: Emerging Markets reporting unit $ 4,336 $ 4,336 Adjacent Markets reporting unit 736 736 Total goodwill 5,072 5,072 Accumulated impairment losses ( 4,336 ) — $ 736 $ 5,072 Other intangible assets: Developed technology 14.2 $ 6,475 $ 6,475 Customer relationships 0.5 3,900 3,900 Trade names 1.0 2,022 2,022 Non-compete agreements 0.3 186 186 Total other intangible assets 7.5 12,583 12,583 Accumulated amortization ( 7,010 ) ( 5,333 ) $ 5,573 $ 7,250
Future Estimated Amortization Expense of Other intangible Assets	As of September 30, 2022, future estimated amortization expense of other intangible assets is as follows (in thousands): For fiscal years ending September 30, 2023 $ 768 2024 395 2025 381 2026 374 2027 360 Thereafter 3,295 $ 5,573

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Sep. 30, 2022
Other Liabilities, Current [Abstract]
Schedule of Other Current Liabilities	Other current liabilities consisted of the following (in thousands): AS OF SEPTEMBER 30, 2022 2021 Deferred revenue $ 629 $ 1,346 Compensated absences 1,849 1,728 Payroll 804 1,579 Property and sales taxes 991 1,038 Legal and professional fees 346 360 Medical claims 590 574 Product warranty 524 379 Income taxes 56 29 Other 827 766 $ 6,616 $ 7,799

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Sep. 30, 2022
Stockholders' Equity Note [Abstract]
Summary of Combined Activity Under Equity Incentive Plans	The following table summarizes the combined activity under the equity incentive plans for the indicated periods: Number of Weighted Number of Weighted Number of Weighted Outstanding at October 1, 2020 91,100 $ 17.66 110,374 $ 16.66 218,257 $ 14.82 Granted — — — — 195,950 7.00 Exercised — — — — — — Forfeited ( 52,300 ) 16.47 ( 2,500 ) 14.78 ( 44,001 ) 7.14 Vested — — ( 65,777 ) 17.28 ( 70,832 ) 14.63 Outstanding at September 30, 2021 38,800 21.42 42,097 15.95 299,374 10.87 Granted — — — — 200,350 8.49 Exercised — — — — — — Forfeited ( 38,800 ) 21.42 — — ( 51,603 ) 9.17 Vested — — ( 41,097 ) 14.67 ( 124,262 ) 11.20 Outstanding at September 30, 2022 $ — $ — 1,000 $ 14.59 323,859 $ 9.54

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Components of Loss Before Income Taxes	Components of loss before income taxes were as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 United States $ ( 19,425 ) $ ( 10,628 ) Foreign ( 3,258 ) ( 2,850 ) $ ( 22,683 ) $ ( 13,478 )
Computation of Provision for Income Taxes	The provision for income taxes consisted of the following (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Current Federal $ ( 12 ) $ 14 Foreign 202 561 State — — 190 575 Deferred: Federal — — Foreign ( 17 ) 3 ( 17 ) 3 $ 173 $ 578
Reconciliation of Actual Income Tax Expenses	Actual income tax expense differs from income tax expense computed by applying the U.S. statutory federal tax rate of 21 % for each of the fiscal years ended September 30, 2022 and 2021 as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Expense (benefit) for U.S federal income tax at statutory rate $ ( 4,763 ) $ ( 2,834 ) Effect of foreign income taxes 3 1 Research and experimentation tax credit 6 ( 223 ) State income taxes, net of federal income tax benefit ( 265 ) 153 Nondeductible expenses 927 44 Change in valuation allowance 3,768 2,893 Impact on deferred taxes due to change in tax rate - 563 Change in fair value of contingent consideration ( 278 ) ( 569 ) Foreign income tax withholding 114 419 Disallowance of stock compensation adjustments in excess of book 217 334 Other items 444 ( 203 ) $ 173 $ 578 Effective tax rate ( 0.8 )% ( 4.3 )%
Components of Net Deferred Income Tax Asset (Liabilities)	The income tax expense for fiscal years 2022 and 2021 primarily reflects withholding tax on rental income earned in foreign jurisdictions. The Company is currently unable to record any tax benefits for its tax losses in the U.S., Canada and the Russian Federation due to the uncertainty surrounding its ability to utilize such losses in the future to offset taxable income. Deferred income taxes reflect the net tax effects 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 net deferred income tax assets (liabilities) were as follows (in thousands): AS OF SEPTEMBER 30, 2022 AS OF SEPTEMBER 30, 2021 U.S. Non U.S. Total U.S. Non U.S. Total Deferred income tax assets: Allowance for doubtful accounts $ 109 $ 6 $ 115 $ 80 $ 4 $ 84 Inventories 8,295 218 8,513 8,042 — 8,042 Loss and tax credit carry-forwards 29,606 5,037 34,643 27,578 4,945 32,523 Stock-based compensation 262 — 262 398 — 398 Accrued product warranty 99 8 107 77 2 79 Contingent earn-out consideration — — — 917 — 917 Accrued compensated absences 347 — 347 320 — 320 Property and equipment — 578 578 — 487 487 Prepaid income taxes — 92 92 — 266 266 Other reserves 30 15 45 114 11 125 Subtotal deferred income tax assets 38,748 5,954 44,702 37,526 5,715 43,241 Valuation allowance ( 35,462 ) ( 5,914 ) ( 41,376 ) ( 31,668 ) ( 5,704 ) ( 37,372 ) Net deferred income tax assets 3,286 40 3,326 5,858 11 5,869 Deferred income tax liabilities: Allowance for doubtful accounts — — — — — — Inventories — — — — ( 6 ) ( 6 ) Right-of-use assets ( 109 ) — ( 109 ) ( 131 ) — ( 131 ) Intangible assets ( 356 ) — ( 356 ) ( 642 ) — ( 642 ) Property, plant and equipment and other ( 2,821 ) ( 53 ) ( 2,874 ) ( 5,085 ) ( 36 ) ( 5,121 ) Total deferred income tax liabilities ( 3,286 ) ( 53 ) ( 3,339 ) ( 5,858 ) ( 42 ) ( 5,900 ) Net deferred income tax liabilities $ — $ ( 13 ) $ ( 13 ) $ — $ ( 31 ) $ ( 31 )

Loss Per Common Share (Tables)

Loss Per Common Share (Tables)	12 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Calculation of Net Loss and Weighted Average Common Shares and Common Equivalent Shares Outstanding for Computation of Loss Per Share	The following table summarizes the calculation of net loss and weighted average common shares and common equivalent shares outstanding for purposes of the computation of loss per share (in thousands, except share and per share amounts): YEAR ENDED SEPTEMBER 30, 2022 2021 Net loss $ ( 22,856 ) $ ( 14,056 ) Less: Loss allocable to unvested restricted stock — — Loss attributable to common shareholders $ ( 22,856 ) $ ( 14,056 ) Weighted average number of common share equivalents: Common shares used in basic loss per share 12,987,996 13,358,930 Common share equivalents outstanding related to — — Total weighted average common shares and common share 12,987,996 13,358,930 Loss per shares: Basic $ ( 1.76 ) $ ( 1.05 ) Diluted $ ( 1.76 ) $ ( 1.05 )

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Sep. 30, 2022
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information Components	Supplemental cash flow information is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Cash paid for income taxes $ 169 $ 551 Non-cash investing and financing activities: Inventory transferred to rental equipment 1,148 4,038 Inventory transferred to property, plant and equipment 172 286 Issuance of notes receivables in connection with sale of used rental equipment 11,745 2,665

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Summary of Company's Segment Information	The following tables summarize the Company’s segment information: YEAR ENDED SEPTEMBER 30, 2022 2021 Revenue: Oil and Gas Markets $ 49,141 $ 52,252 Adjacent Markets 39,171 32,419 Emerging Markets 711 10,193 Corporate 230 — Total 89,253 94,864 Income (loss) from operations: Oil and Gas Markets ( 7,539 ) ( 16,229 ) Adjacent Markets 6,021 6,423 Emerging Markets ( 9,128 ) 5,033 Corporate ( 12,490 ) ( 12,098 ) Total ( 23,136 ) ( 16,871 ) Depreciation and amortization expenses: Oil and Gas Markets 16,947 18,199 Adjacent Markets 743 440 Emerging Markets 1,068 1,209 Corporate 802 929 Total 19,560 20,777 Impairment, inventory obsolescence and stock-based compensation expenses: Oil and Gas Markets 3,612 3,850 Adjacent Markets 932 223 Emerging Markets 4,423 100 Corporate 727 798 Total 9,694 4,971 Interest income: Oil and Gas Markets 850 1,409 Adjacent Markets — 1 Emerging Markets — — Corporate 126 31 Total 976 1,441 Interest expense: Oil and Gas Markets 65 — Adjacent Markets — — Emerging Markets — — Corporate — — Total 65 —
Details of Revenue	The Company generates revenue from product sales, product rentals and services from its subsidiaries located in the United States, Canada, Colombia, the Russian Federation and the United Kingdom. Revenue generated by the Company’s subsidiaries is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 United States $ 82,332 $ 88,776 Canada 1,615 1,132 Russian Federation 1,922 1,746 United Kingdom 3,384 3,210 $ 89,253 $ 94,864
Summary of Revenue by Geographic Area	A summary of revenue by geographic area is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2022 2021 Africa $ 471 $ 2,507 Asia 13,823 23,299 Canada 1,225 997 Europe 28,381 13,801 South America 7,547 2,514 United States 35,171 49,541 Other 2,635 2,205 $ 89,253 $ 94,864
Long-lived Assets	Long-lived assets were as follows (in thousands): AS OF SEPTEMBER 30, 2022 2021 United States $ 71,742 $ 98,395 Canada 1,459 3,653 Colombia 449 590 Russian Federation 1,010 689 United Kingdom 422 559 China 13 13 $ 75,095 $ 103,899

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021
Significant Accounting Policies [Line Items]
Restricted cash on deposit	$ 200,000	$ 200,000	$ 0
Cash and cash equivalents held by foreign subsidiaries	2,600,000	$ 2,600,000	2,600,000
Minimum credit limit		30 days
Extended credit terms for trade receivables		60 days
Trade account and financing receivable due	3,000,000	$ 3,000,000
Impairment charge	$ 400,000	401,000
Income tax, Interest or penalties incurred		$ 0	$ 0
Change in accounting principle, accounting standards update, adopted	true	true
Change in accounting principle, accounting standards update, adoption date	Dec. 31, 2021	Dec. 31, 2021
Change in accounting principle, accounting standards update, immaterial effect	true	true
Accounting Standards Update [Extensible Enumeration]		us-gaap:AccountingStandardsUpdate201912Member
Emerging Markets
Significant Accounting Policies [Line Items]
Impairment charges related to long lived assets		$ 0
Product Concentration Risk | Sales Revenue, Net | Certain Models of Oil and Gas Marine Wireless Products
Significant Accounting Policies [Line Items]
Percentage of company revenue		11%	0%
Product Concentration Risk | Sales Revenue, Net | Thermal Film
Significant Accounting Policies [Line Items]
Percentage of company revenue		8%	7%
Customer one
Significant Accounting Policies [Line Items]
Trade account and financing receivable due	$ 5,500,000	$ 5,500,000	$ 4,900,000
Customer one | Customer Concentration Risk | Sales Revenue, Net
Significant Accounting Policies [Line Items]
Percentage of company revenue		29.30%	19.80%
Customer two
Significant Accounting Policies [Line Items]
Trade account and financing receivable due			$ 7,400,000
Customer two | Customer Concentration Risk | Sales Revenue, Net
Significant Accounting Policies [Line Items]
Percentage of company revenue			16.40%
Customer three
Significant Accounting Policies [Line Items]
Trade account and financing receivable due			$ 1,100,000
Customer three | Customer Concentration Risk | Sales Revenue, Net
Significant Accounting Policies [Line Items]
Percentage of company revenue			10.60%
Russian Federation Subsidiary
Significant Accounting Policies [Line Items]
Cash and cash equivalents held by foreign subsidiaries			$ 1,800,000
Geospace Technologies Eurasia LLC
Significant Accounting Policies [Line Items]
Percentage of ownership interest or majority of voting interests subject to sanctions		33%
Net carrying value of subsidiary	$ 6,000,000	$ 6,000,000
Revenue from domestic sales		1,900,000
Imported product for resale		$ 1,900,000

Property, Plant and Equipment E

Property, Plant and Equipment Estimated Useful Life (Details)	12 Months Ended
	Sep. 30, 2022
Minimum
Property Plant And Equipment [Line Items]
Rental Equipment	2 years
Maximum
Property Plant And Equipment [Line Items]
Rental Equipment	5 years
Machinery and equipment | Minimum
Property Plant And Equipment [Line Items]
Property useful lives	3 years
Machinery and equipment | Maximum
Property Plant And Equipment [Line Items]
Property useful lives	15 years
Buildings and building improvements | Minimum
Property Plant And Equipment [Line Items]
Property useful lives	10 years
Buildings and building improvements | Maximum
Property Plant And Equipment [Line Items]
Property useful lives	50 years
Other | Minimum
Property Plant And Equipment [Line Items]
Property useful lives	5 years
Other | Maximum
Property Plant And Equipment [Line Items]
Property useful lives	10 years

Schedule of Estimated Useful Li

Schedule of Estimated Useful Lives of Other Intangible Assets (Details)	12 Months Ended
	Sep. 30, 2022
Developed Technology
Finite Lived Intangible Assets [Line Items]
Other intangible assets estimated useful life	18 years
Trade Names
Finite Lived Intangible Assets [Line Items]
Other intangible assets estimated useful life	5 years
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Other intangible assets estimated useful life	4 years
Non-compete Agreements
Finite Lived Intangible Assets [Line Items]
Other intangible assets estimated useful life	4 years

Changes in Product Warranty Res

Changes in Product Warranty Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Changes in product warranty reserve
Balance at the beginning of the year	$ 379	$ 258
Accruals for warranties issued during the year	1,431	814
Settlements made (in cash or in kind) during the year	(1,286)	(693)
Balance at the end of the year	$ 524	$ 379

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended						12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Cost of sales							$ 51,649,000	$ 58,884,000
Unbilled receivables								1,051,000
Deferred contract liabilities							0	0
Outstanding promissory note							3,000,000
Total revenue							64,109,000	75,864,000
Value of notes with customer							8,225,000	7,896,000
Secured Promissory Note
Disaggregation Of Revenue [Line Items]
Value of notes with customer	$ 8,000,000	$ 3,700,000				$ 10,000,000
Term of the notes	1 year	9 months	6 months			3 years
Monthly principal and interest payments						$ 300,000
Frequency of payments						monthly
U.S. Customs and Border Protection ("CBP")
Disaggregation Of Revenue [Line Items]
Awarded contract amount					$ 10,500,000
Increase in contract amount					$ 300,000
Revenue recognized under the contract							300,000	9,900,000
Shipping and Handling
Disaggregation Of Revenue [Line Items]
Cost of sales							600,000	$ 400,000
Product
Disaggregation Of Revenue [Line Items]
Total revenue				$ 12,500,000		$ 0
Partially financed product sale						$ 12,500,000
Payments received from customer							$ 9,500,000

Revenue Recognition - Additio_2

Revenue Recognition - Additional Information (Details 1)	Sep. 30, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-10-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Unsatisfied performance obligation, expected timing of satisfaction, period	1 year

Revenue Recognition - Summary o

Revenue Recognition - Summary of Revenue from the Sale of Products and Performance of Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Operating Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 64,109	$ 75,864
Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenue	64,109	75,864
Operating Segments | Oil and Gas Markets
Disaggregation Of Revenue [Line Items]
Total revenue	24,348	33,411
Operating Segments | Oil and Gas Markets | Traditional Exploration Product Revenue
Disaggregation Of Revenue [Line Items]
Total revenue	6,558	4,518
Operating Segments | Oil and Gas Markets | Wireless Exploration Product Revenue
Disaggregation Of Revenue [Line Items]
Total revenue	15,822	27,016
Operating Segments | Oil and Gas Markets | Reservoir Product Revenue
Disaggregation Of Revenue [Line Items]
Total revenue	1,968	1,877
Operating Segments | Adjacent Markets
Disaggregation Of Revenue [Line Items]
Total revenue	39,000	32,260
Operating Segments | Adjacent Markets | Industrial Product Revenue
Disaggregation Of Revenue [Line Items]
Total revenue	25,640	21,335
Operating Segments | Adjacent Markets | Imaging Product Revenue
Disaggregation Of Revenue [Line Items]
Total revenue	13,360	10,925
Operating Segments | Emerging Markets
Disaggregation Of Revenue [Line Items]
Total revenue	711	$ 10,193
Operating Segments | Corporate
Disaggregation Of Revenue [Line Items]
Total revenue	$ 50

Revenue Recognition - Summary_2

Revenue Recognition - Summary of Revenue from the Sale of Products and Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 64,109	$ 75,864
Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenue	64,109	75,864
Operating Segments | Asia
Disaggregation Of Revenue [Line Items]
Total revenue	10,978	17,268
Operating Segments | Canada
Disaggregation Of Revenue [Line Items]
Total revenue	890	1,550
Operating Segments | Europe
Disaggregation Of Revenue [Line Items]
Total revenue	15,705	7,693
Operating Segments | South America
Disaggregation Of Revenue [Line Items]
Total revenue	719	287
Operating Segments | United States
Disaggregation Of Revenue [Line Items]
Total revenue	33,778	47,101
Operating Segments | Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 2,039	$ 1,965

Business Acquisition - Addition

Business Acquisition - Additional Information (Details) - Aquana, LLC - USD ($)		12 Months Ended
	Jul. 02, 2021	Sep. 30, 2022	Sep. 30, 2021
Business Acquisition [Line Items]
Business acquisition date		Jul. 02, 2021
Percentage of outstanding membership interest acquired	100%
Initial cash down payment	$ 1,400,000
Contingent cash payments, description	There is no maximum limit to the contingent cash payments that could be made.
Contingent cash payments earn-out period	6 years
Liability estimated fair value of contingent earn-out payments	$ 0
Goodwill	700,000
Other intangible assets	$ 700,000
Acquisition related costs			$ 200,000
Former Member of Aquana, LLC
Business Acquisition [Line Items]
Contingent cash payments earn-out period	4 years

Investments - Additional Inform

Investments - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Schedule Of Available For Sale Securities [Line Items]
Realized losses from sale of short-term investments	$ 22,000	$ 4,000
Gain on investments, net	$ (22,000)	1,993,000
Debt Security
Schedule Of Available For Sale Securities [Line Items]
Gain on investments, net		$ 2,000,000

Investments - Summary of Short-

Investments - Summary of Short-Term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 909	$ 9,511
Unrealized Losses	(15)	(15)
Estimated Fair Value	894	9,496
Corporate Bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	909	9,511
Unrealized Losses	(15)	(15)
Estimated Fair Value	$ 894	$ 9,496

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Fair Value of Company's Short-Term Investment and Contingent Consideration by Valuation Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Non-current portion contingent consideration liabilities		$ 5,210
Current portion contingent consideration liabilities	$ 175	807
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	894	9,496
Non-current portion contingent consideration liabilities		5,210
Current portion contingent consideration liabilities	175	807
Total liabilities	175	6,017
Fair Value, Measurements, Recurring | Significant Other Observable (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	894	9,496
Fair Value, Measurements, Recurring | Significant Unobservable (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Non-current portion contingent consideration liabilities		5,210
Current portion contingent consideration liabilities	175	807
Total liabilities	175	6,017
Corporate bonds | Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	894	9,496
Corporate bonds | Fair Value, Measurements, Recurring | Significant Other Observable (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	$ 894	$ 9,496

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Changes in Fair Value of Company Level 3 Financial Instruments (Details) - Nonrecurring - Significant Unobservable (Level 3) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance	$ 6,017	$ 10,962
Fair value adjustments	(5,035)	(3,524)
Payment of contingent consideration	(807)	(1,421)
Balance	$ 175	$ 6,017

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Beginning Balance	$ 142,457	$ 160,970
Other comprehensive income	1,007	378
Ending Balance	121,647	142,457
Unrealized Gains (Losses) on Available-for-Sale Securities
Beginning Balance	(15)
Other comprehensive income		(15)
Ending Balance	(15)	(15)
Foreign Currency Translation Adjustments
Beginning Balance	(16,305)	(16,698)
Other comprehensive income	1,007	393
Ending Balance	(15,298)	(16,305)
Accumulated Other Comprehensive Loss
Beginning Balance	(16,320)	(16,698)
Other comprehensive income	1,007	378
Ending Balance	$ (15,313)	$ (16,320)

Trade Accounts and Financing _3

Trade Accounts and Financing Receivables - Trade Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Current trade accounts receivable
Trade accounts receivable	$ 13,252	$ 12,635
Allowance for doubtful accounts	(591)	(428)
Total current trade accounts receivable	$ 12,661	$ 12,207

Trade Accounts and Financing _4

Trade Accounts and Financing Receivables - Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Accounts Notes And Loans Receivable [Line Items]
Total financing receivables	$ 8,225	$ 7,896
Total unearned income		(6)
Total financing receivables, net of unearned income	8,225	7,890
Less current portion	(8,225)	(4,952)
Non-current notes receivable		2,938
Promissory Notes
Accounts Notes And Loans Receivable [Line Items]
Total financing receivables	$ 8,225	5,432
Sales-type Lease
Accounts Notes And Loans Receivable [Line Items]
Total financing receivables		2,464
Total unearned income		$ (6)

Trade Accounts and Financing _5

Trade Accounts and Financing Receivables - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2020	Sep. 30, 2022	Sep. 30, 2021
Accounts Notes And Loans Receivable [Line Items]
Value of notes with customer					$ 8,225	$ 7,896
Secured Promissory Note
Accounts Notes And Loans Receivable [Line Items]
Value of notes with customer	$ 8,000	$ 3,700		$ 10,000
Term of the notes	1 year	9 months	6 months	3 years
Monthly principal and interest payments				$ 300
Frequency of payments				monthly
Manufactured Rental Equipment
Accounts Notes And Loans Receivable [Line Items]
Promissory notes receivable maturity month and year					2024-01
Manufactured Rental Equipment | Minimum
Accounts Notes And Loans Receivable [Line Items]
Promissory notes receivable maximum interest rate					7%
Manufactured Rental Equipment | Maximum
Accounts Notes And Loans Receivable [Line Items]
Promissory notes receivable maximum interest rate					9.50%
Product
Accounts Notes And Loans Receivable [Line Items]
Partially financed product sale				$ 12,500
Rental Equipment
Accounts Notes And Loans Receivable [Line Items]
Partially financed product sale	$ 10,000

Inventories - Inventories (Deta

Inventories - Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Inventory Disclosure [Abstract]
Finished goods	$ 14,653	$ 14,968
Work in process	6,230	8,247
Raw materials	25,609	24,720
Obsolescence reserve (net realizable value adjustment)	(13,971)	(13,636)
Total	32,521	34,299
Less current portion	(19,995)	(16,196)
Non-current portion	$ 12,526	$ 18,103

Inventories - Additional Inform

Inventories - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Inventory Disclosure [Abstract]
Inventory obsolescence expense	$ 3,222	$ 3,001
Raw materials include semi-finished goods and component parts	$ 20,700	$ 22,700

Leases - Additional Information

Leases - Additional Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Sep. 30, 2022 USD ($) PropertyLeases OperatingRightOfUseAsset	Sep. 30, 2021 USD ($)
Leases [Line Items]
Rental revenue		$ 25,144	$ 19,000
Future minimum lease payments to be received		538
Rental equipment depreciation expense		$ 13,740	15,075
Number of operating rental revenue property lease | PropertyLeases		2
Equipment
Leases [Line Items]
Trade accounts receivables included lease receivables		$ 3,200
Rental revenue		24,900	$ 19,000
Future minimum lease payments to be received		24,600
Property
Leases [Line Items]
Rental revenue		$ 200
Maximum | Equipment
Leases [Line Items]
Lease term		1 year
Austin, Texas
Leases [Line Items]
Number of operating right-of use asset related to leased facility | OperatingRightOfUseAsset		2
Calgary | Property
Leases [Line Items]
Lease term	5 years
Lessor Operating Lease Commenced Date	2021-11
Bogota | Property
Leases [Line Items]
Lease term	1 year
Lessor Operating Lease Commenced Date	2021-12

Leases - Summary of Maturities

Leases - Summary of Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
2023	$ 270
2024	278
2025	186
2026	130
2027	134
2028	91
Future minimum lease payments	1,089
Less interest	(79)
Present value of minimum lease payments	1,010
Less current portion	(241)	$ (225)
Long-term portion	$ 769	$ 1,009

Leases - Summary of Lease Costs

Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Right-of-use operating lease costs	$ 272	$ 246
Short-term lease costs	190	239
Total	$ 462	$ 485

Leases - Summary of Other Infor

Leases - Summary of Other Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating cash flows from operating leases	$ 262	$ 211
Operating lease assets obtained in exchange for new lease liabilities	$ 0	$ 1,336
Weighted average remaining lease term	4 years 8 months 12 days	5 years 7 months 6 days
Weighted average discount rate	3.25%	3.25%

Leases - Rental Equipment (Deta

Leases - Rental Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Rental Equipment [Abstract]
Rental equipment, primarily wireless recording equipment	$ 83,887	$ 95,827
Accumulated depreciation and impairment	(55,688)	(56,922)
Rental equipment, net	$ 28,199	$ 38,905

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payment (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Lessor, Operating Lease, Payments to be Received, Fiscal Year Maturity [Abstract]
2023	$ 136
2024	128
2025	131
2026	132
2027	11
Total	$ 538

Property, Plant and Equipment -

Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property, plant and equipment depreciation expense		$ 4,143	$ 3,956
Property, plant and equipment impairment expense	$ 400	$ 401

Property, Plant and Equipment_2

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Land and land improvements	$ 7,855	$ 7,932
Building and building improvements	24,588	24,646
Machinery and equipment	59,393	56,828
Furniture and fixtures	1,434	1,417
Tools and molds	3,243	3,036
Construction in progress	341	2,288
Transportation equipment	74	75
Property plant and equipment gross	96,928	96,222
Accumulated depreciation and impairment	(70,330)	(66,239)
Property plant and equipment net	$ 26,598	$ 29,983

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Goodwill And Other Intangible Assets [Line Items]
Goodwill	$ 736,000	$ 5,072,000
Other intangible assets	12,583,000	12,583,000
Goodwill impairment	4,336,000
Amortization expense	1,677,000	$ 1,746,000
Reporting unit, carrying value in excess of fair value	8,000,000
Change in fair value of reporting unit	$ 1,000,000
Reporting unit change in discount rate	3%
Reporting unit change in revenue	4%
Reporting unit change in cost of revenue	10%
Reporting unit change in research and development expense	13%
Adjacent Markets
Goodwill And Other Intangible Assets [Line Items]
Goodwill impairment	$ 0
Emerging Markets
Goodwill And Other Intangible Assets [Line Items]
Goodwill impairment	4,300,000
Aquana, LLC | Adjacent Markets
Goodwill And Other Intangible Assets [Line Items]
Goodwill	700,000
Other intangible assets	600,000
Aquana, LLC | Emerging Markets
Goodwill And Other Intangible Assets [Line Items]
Other intangible assets	3,500,000
Aquana, LLC | Oil and Gas Markets
Goodwill And Other Intangible Assets [Line Items]
Other intangible assets	$ 1,500,000

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Goodwill And Other Intangible Assets [Line Items]
Total goodwill	$ 5,072	$ 5,072
Accumulated impairment losses	(4,336)
Goodwill, Total	736	5,072
Total other intangible assets	12,583	12,583
Accumulated amortization	(7,010)	(5,333)
Total	$ 5,573	7,250
Weighted-Average Remaining Useful Lives (in years)	7 years 6 months
Developed Technology
Goodwill And Other Intangible Assets [Line Items]
Total other intangible assets	$ 6,475	6,475
Weighted-Average Remaining Useful Lives (in years)	14 years 2 months 12 days
Customer Relationships
Goodwill And Other Intangible Assets [Line Items]
Total other intangible assets	$ 3,900	3,900
Weighted-Average Remaining Useful Lives (in years)	6 months
Trade Names
Goodwill And Other Intangible Assets [Line Items]
Total other intangible assets	$ 2,022	2,022
Weighted-Average Remaining Useful Lives (in years)	1 year
Non-compete Agreements
Goodwill And Other Intangible Assets [Line Items]
Total other intangible assets	$ 186	186
Weighted-Average Remaining Useful Lives (in years)	3 months 18 days
Emerging Markets
Goodwill And Other Intangible Assets [Line Items]
Total goodwill	$ 4,336	4,336
Adjacent Markets
Goodwill And Other Intangible Assets [Line Items]
Total goodwill	$ 736	$ 736

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Future Estimated Amortization Expense Of Other intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
2023	$ 768
2024	395
2025	381
2026	374
2027	360
Thereafter	3,295
Total	$ 5,573	$ 7,250

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($)		12 Months Ended
	May 06, 2022	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Total long-term debt outstanding		$ 0	$ 0
Debt issuance costs		211,000
The Agreement
Debt Instrument [Line Items]
Maximum amount of borrowing based upon assets	$ 10,000,000
Borrowing base as percentage of loan to value of property	70%
Borrowing base as percentage of forced liquidation value of equipment	50%
Borrowing base as percentage of assets	80%
Agreement term	2 years
Minimum consolidated tangible net worth	$ 100,000,000
Borrowing availability		$ 8,500,000
Debt issuance costs	$ 200,000
The Agreement | Prime Rate
Debt Instrument [Line Items]
Interest rate on borrowed funds	4%
The Agreement | Prime Rate | Minimum
Debt Instrument [Line Items]
Interest rate on borrowed funds	3.25%
The Agreement | Inventory
Debt Instrument [Line Items]
Borrowing base as percentage of assets	50%
Borrowing base as percent of credit towards accounts receivable	100%

Other Current Liabilities - Sch

Other Current Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Other Liabilities, Current [Abstract]
Deferred revenue	$ 629	$ 1,346
Compensated absences	1,849	1,728
Payroll	804	1,579
Property and sales taxes	991	1,038
Legal and professional fees	346	360
Medical claims	590	574
Product warranty	524	379	$ 258
Income taxes	56	29
Other	827	766
Other current liabilities	$ 6,616	$ 7,799

Other Current Liabilities - Add

Other Current Liabilities - Additional Information (Details)	12 Months Ended
	Sep. 30, 2022 USD ($)
Other Liabilities, Current [Abstract]
Purchased stop-loss coverage for individual claims	$ 175,000

Employee Benefits - Additional

Employee Benefits - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
401(k) Retirement Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Company's share of discretionary matching contributions	$ 1	$ 0.9

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2019	Dec. 31, 2022	Feb. 28, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 1,700	$ 2,000
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued	200,350	195,950
Weighted average grant date fair value of the restricted stock	$ 8.49	$ 7
Unrecognized compensation expense	$ 1,900
Expected period for recognition of unrecognized compensation expense	2 years 3 months 18 days
Restricted Stock Awards (RSAs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense				$ 2,000
2014 Long Term Incentive Plan, Amended
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance					3,000,000
Percent of outstanding common stock granted to employees	10%
Exercise price of stock option granted to employees	110%
Common stock available for issuance	1,468,916
2014 Long Term Incentive Plan, Amended | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued	200,350	195,950
Weighted average grant date fair value of the restricted stock	$ 8.49	$ 7
Grant date fair value of restricted stock	$ 1,700	$ 1,400
2014 Long Term Incentive Plan, Amended | Restricted Stock Awards (RSAs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued			0
2014 Long Term Incentive Plan, Amended | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options have a term	10 years
Outstanding shares of common stock granted to employees expiry term	5 years
2014 Long Term Incentive Plan, Amended | Maximum | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock restriction period	4 years	4 years
2014 Long Term Incentive Plan, Amended | Minimum | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock restriction period	1 year	1 year

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Combined Activity Under Equity Incentive Plans (Details) - $ / shares	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Number of Nonqualified Options, Beginning Balance	38,800	91,100
Forfeited, Number of Nonqualified Options Outstanding	(38,800)	(52,300)
Vested, Number of Nonqualified Options Outstanding	0	0
Outstanding, Number of Nonqualified Options, Ending Balance		38,800
Options, Outstanding, Weighted Average Exercise Price per Share, Beginning Balance	$ 21.42	$ 17.66
Forfeited, Weighted Average Exercise Price per Share	$ 21.42	16.47
Options, Outstanding, Weighted Average Exercise Price per Share, Ending Balance		$ 21.42
Restricted Stock Awards (RSAs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Number of Restricted Stock Awards, Beginning Balance	42,097	110,374
Forfeited, Number of Restricted Stock Awards		(2,500)
Vested, Number of Restricted Stock Awards	(41,097)	(65,777)
Options, Number of Restricted Stock Awards, Ending Balance	1,000	42,097
Outstanding, Weighted Average Grant-date fair- value per Share, Beginning Balance	$ 15.95	$ 16.66
Forfeited, Weighted Average Grant-date fair- value per Share		14.78
Vested, Weighted Average Grant-date fair- value per Share	14.67	17.28
Outstanding, Weighted Average Grant-date fair- value per Share, Ending Balance	$ 14.59	$ 15.95
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Number of Restricted Stock Awards, Beginning Balance	299,374	218,257
Granted, Number of Restricted Stock Awards	200,350	195,950
Forfeited, Number of Restricted Stock Awards	(51,603)	(44,001)
Vested, Number of Restricted Stock Awards	(124,262)	(70,832)
Options, Number of Restricted Stock Awards, Ending Balance	323,859	299,374
Outstanding, Weighted Average Grant-date fair- value per Share, Beginning Balance	$ 10.87	$ 14.82
Granted, Weighted Average Grant-date fair- value per Share	8.49	7
Forfeited, Weighted Average Grant-date fair- value per Share	9.17	7.14
Vested, Weighted Average Grant-date fair- value per Share	11.20	14.63
Outstanding, Weighted Average Grant-date fair- value per Share, Ending Balance	$ 9.54	$ 10.87

Components of Loss Before Incom

Components of Loss Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
United States	$ (19,425)	$ (10,628)
Foreign	(3,258)	(2,850)
Loss before income taxes	$ (22,683)	$ (13,478)

Computation of Provision for In

Computation of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Current
Current Federal	$ (12)	$ 14
Current Foreign	202	561
Total current income tax expenses (benefits)	190	575
Deferred:
Deferred Foreign	(17)	3
Total Deferred Income Tax Expense (benefits)	(17)	3
Income tax expense	$ 173	$ 578

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2017
Income Taxes [Line Items]
United States statutory tax rate	21%	21%
Cash and cash equivalents held by foreign subsidiaries	$ 2,600	$ 2,600
Temporary difference related to undistributed earnings	6,900	6,500
Unrecognized tax liabilities	0	0
Valuation allowance against net deferred tax assets	3,768	2,893
United States
Income Taxes [Line Items]
Net operating loss, carryforwards	106,200		$ 28,000
Net operating loss, carryforwards expiration year			2028
Net operating loss, carryforwards after tax act do not expire	77,900
Valuation allowance against net deferred tax assets	35,500	31,700
Canada
Income Taxes [Line Items]
Net operating loss, carryforwards	$ 19,800
Net operating loss, carryforwards expiration year	2033
Valuation allowance against net deferred tax assets	$ 5,200	5,400
Russia
Income Taxes [Line Items]
Net operating loss, carryforwards	$ 2,300
Net operating loss, carryforwards expiration year	2026
Valuation allowance against net deferred tax assets	$ 700	$ 300

Reconciliation of Actual Income

Reconciliation of Actual Income Tax Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Expense (benefit) for U.S federal income tax at statutory rate	$ (4,763)	$ (2,834)
Effect of foreign income taxes	3	1
Research and experimentation tax credit	6	(223)
State income taxes, net of federal income tax benefit	(265)	153
Nondeductible expenses	927	44
Change in valuation allowance	3,768	2,893
Impact on deferred taxes due to change in tax rate		563
Change in fair value of contingent consideration	(278)	(569)
Foreign income tax withholding	114	419
Disallowance of stock compensation adjustments in excess of book	217	334
Other items	444	(203)
Income tax expense	$ 173	$ 578
Effective tax rate	(0.80%)	(4.30%)

Components of Net Deferred Inco

Components of Net Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Deferred income tax assets:
Allowance for doubtful accounts	$ 115	$ 84
Inventories	8,513	8,042
Loss and tax credit carry-forwards	34,643	32,523
Stock-based compensation	262	398
Accrued product warranty	107	79
Contingent earn-out consideration		917
Accrued compensated absences	347	320
Property and equipment	578	487
Prepaid income taxes	92	266
Other reserves	45	125
Subtotal deferred income tax assets	44,702	43,241
Valuation allowance	(41,376)	(37,372)
Net deferred income tax assets	3,326	5,869
Deferred income tax liabilities:
Inventories		(6)
Right-of-use assets	(109)	(131)
Intangible assets	(356)	(642)
Property, plant and equipment and other	(2,874)	(5,121)
Total deferred income tax liabilities	(3,339)	(5,900)
Net deferred income tax liabilities	(13)	(31)
U.S.
Deferred income tax assets:
Allowance for doubtful accounts	109	80
Inventories	8,295	8,042
Loss and tax credit carry-forwards	29,606	27,578
Stock-based compensation	262	398
Accrued product warranty	99	77
Contingent earn-out consideration		917
Accrued compensated absences	347	320
Other reserves	30	114
Subtotal deferred income tax assets	38,748	37,526
Valuation allowance	(35,462)	(31,668)
Net deferred income tax assets	3,286	5,858
Deferred income tax liabilities:
Right-of-use assets	(109)	(131)
Intangible assets	(356)	(642)
Property, plant and equipment and other	(2,821)	(5,085)
Total deferred income tax liabilities	(3,286)	(5,858)
Non U.S.
Deferred income tax assets:
Allowance for doubtful accounts	6	4
Inventories	218
Loss and tax credit carry-forwards	5,037	4,945
Accrued product warranty	8	2
Property and equipment	578	487
Prepaid income taxes	92	266
Other reserves	15	11
Subtotal deferred income tax assets	5,954	5,715
Valuation allowance	(5,914)	(5,704)
Net deferred income tax assets	40	11
Deferred income tax liabilities:
Inventories		(6)
Property, plant and equipment and other	(53)	(36)
Total deferred income tax liabilities	(53)	(42)
Net deferred income tax liabilities	$ (13)	$ (31)

Loss Per Common Share - Calcula

Loss Per Common Share - Calculation of Net Loss and Weighted Average Common Shares and Common Equivalent Shares Outstanding for Computation of Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net loss	$ (22,856)	$ (14,056)
Loss attributable to common shareholders for diluted earnings per share	$ (22,856)	$ (14,056)
Weighted average number of common share equivalents:
Common shares used in basic loss per share	12,987,996	13,358,930
Total weighted average common shares and common share equivalents used in diluted loss per share	12,987,996	13,358,930
Loss per shares basic:
Basic	$ (1.76)	$ (1.05)
Loss per shares diluted:
Diluted	$ (1.76)	$ (1.05)

Loss Per Common Share - Additio

Loss Per Common Share - Additional Information (Details) - shares	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Number of stock excluded from calculation of weighted average shares outstanding	0	38,800
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Number of stock excluded from calculation of weighted average shares outstanding	323,859	299,374

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)				1 Months Ended			12 Months Ended
	Jul. 02, 2021	Nov. 13, 2018	Jul. 27, 2018	Nov. 30, 2022	Oct. 31, 2021	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Commitments And Contingencies [Line Items]
Non-current contingent consideration						$ 5,210,000		$ 5,210,000
Cash contingent earn-out payments							$ 807,000	1,421,000
Change in estimated fair value of contingent consideration							(5,035,000)	(3,524,000)
Quantum
Commitments And Contingencies [Line Items]
Non-current contingent consideration			$ 7,700,000
Contingent cash payments earn-out period			4 years
Contingent payments earn-out period ending month and year			2022-07
Contingent payments maximum earn-out amount			$ 23,500,000
Cash contingent earn-out payments					$ 800,000	1,400,000			$ 100,000
Contingent earn-out liability						800,000		800,000
Change in estimated fair value of contingent consideration							600,000
Estimated fair value of earn-out liability							200,000
Contingent consideration final payment				$ 200,000
Quantum | CBP
Commitments And Contingencies [Line Items]
Awarded contract amount							10,500,000
Optoseis Technology
Commitments And Contingencies [Line Items]
Non-current contingent consideration		$ 4,300,000
Contingent cash payments earn-out period		5 years 6 months
Contingent payments earn-out period ending month and year		2024-05
Contingent payments maximum earn-out amount		$ 23,200,000
Contingent earn-out liability						$ 4,400,000		$ 4,400,000
Change in estimated fair value of contingent consideration							4,400,000
Fair value of contingent consideration liability							$ 0
Aquana
Commitments And Contingencies [Line Items]
Contingent cash payments earn-out period	6 years

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information - Supplemental Cash Flow Information Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Supplemental Cash Flow Elements [Abstract]
Cash paid for income taxes	$ 169	$ 551
Non-cash investing and financing activities:
Inventory transferred to rental equipment	1,148	4,038
Inventory transferred to property, plant and equipment	172	286
Issuance of notes receivables in connection with sale of used rental equipment	$ 11,745	$ 2,665

Segment and Geographic Inform_3

Segment and Geographic Information - Additional Information (Details)	12 Months Ended
	Sep. 30, 2022 Segment
Segment Reporting [Abstract]
Number of operating segments	3

Segment and Geographic Inform_4

Segment and Geographic Information - Summary of Company's Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 89,253	$ 94,864
Income (loss) from operations	(23,136)	(16,871)
Depreciation and amortization expenses	19,560	20,777
Impairment, inventory obsolescence and stock-based compensation expenses	9,694	4,971
Interest income	976	1,441
Interest expense	65
Operating Segments | Oil and Gas Markets
Segment Reporting Information [Line Items]
Revenue	49,141	52,252
Income (loss) from operations	(7,539)	(16,229)
Depreciation and amortization expenses	16,947	18,199
Impairment, inventory obsolescence and stock-based compensation expenses	3,612	3,850
Interest income	850	1,409
Interest expense	65
Operating Segments | Adjacent Markets Product and Services Revenue
Segment Reporting Information [Line Items]
Revenue	39,171	32,419
Income (loss) from operations	6,021	6,423
Depreciation and amortization expenses	743	440
Impairment, inventory obsolescence and stock-based compensation expenses	932	223
Interest income		1
Operating Segments | Emerging Markets
Segment Reporting Information [Line Items]
Revenue	711	10,193
Income (loss) from operations	(9,128)	5,033
Depreciation and amortization expenses	1,068	1,209
Impairment, inventory obsolescence and stock-based compensation expenses	4,423	100
Corporate
Segment Reporting Information [Line Items]
Revenue	230
Income (loss) from operations	(12,490)	(12,098)
Depreciation and amortization expenses	802	929
Impairment, inventory obsolescence and stock-based compensation expenses	727	798
Interest income	$ 126	$ 31

Segment and Geographic Inform_5

Segment and Geographic Information - Details of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 89,253	$ 94,864
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	82,332	88,776
Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	1,615	1,132
Russian Federation Subsidiary
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	1,922	1,746
United Kingdom
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 3,384	$ 3,210

Segment and Geographic Inform_6

Segment and Geographic Information - Summary of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Schedule Of Revenues From External Customers [Line Items]
Revenue	$ 89,253	$ 94,864
Africa
Schedule Of Revenues From External Customers [Line Items]
Revenue	471	2,507
Asia
Schedule Of Revenues From External Customers [Line Items]
Revenue	13,823	23,299
Canada
Schedule Of Revenues From External Customers [Line Items]
Revenue	1,225	997
Europe
Schedule Of Revenues From External Customers [Line Items]
Revenue	28,381	13,801
South America
Schedule Of Revenues From External Customers [Line Items]
Revenue	7,547	2,514
United States
Schedule Of Revenues From External Customers [Line Items]
Revenue	35,171	49,541
Other
Schedule Of Revenues From External Customers [Line Items]
Revenue	$ 2,635	$ 2,205

Segment and Geographic Inform_7

Segment and Geographic Information - Long-lived Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Schedule Of Long Lived Assets [Line Items]
Long-lived assets, excluding deferred tax assets	$ 75,095	$ 103,899
United States
Schedule Of Long Lived Assets [Line Items]
Long-lived assets, excluding deferred tax assets	71,742	98,395
Canada
Schedule Of Long Lived Assets [Line Items]
Long-lived assets, excluding deferred tax assets	1,459	3,653
Colombia
Schedule Of Long Lived Assets [Line Items]
Long-lived assets, excluding deferred tax assets	449	590
Russian Federation
Schedule Of Long Lived Assets [Line Items]
Long-lived assets, excluding deferred tax assets	1,010	689
United Kingdom
Schedule Of Long Lived Assets [Line Items]
Long-lived assets, excluding deferred tax assets	422	559
China
Schedule Of Long Lived Assets [Line Items]
Long-lived assets, excluding deferred tax assets	$ 13	$ 13

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 428
Balance at Beginning of Period	13,636
Charged to Costs and Expenses, net of Recoveries	292	$ (76)
Balance at End of Period	591	428
Balance at End of Period	13,971	13,636
Inventory Obsolescence Reserve
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	36,936	34,960
Charged to Costs and Expenses	3,222	3,001
(Deductions) and Additions	(787)	(1,025)
Balance at End of Period	39,371	36,936
Allowance for Doubtful Accounts on Accounts and Financing Receivables
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	428	496
Charged to Costs and Expenses, net of Recoveries	292	(76)
(Deductions) and Additions	(129)	8
Balance at End of Period	$ 591	$ 428