Geospace Technologies (GEOS) 10-K 22 Nov 24 2024 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2024	Oct. 31, 2024	Mar. 31, 2024
Document Information [Line Items]
Entity Central Index Key	0001001115
Entity Registrant Name	GEOSPACE TECHNOLOGIES CORP
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2024
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	001-13601
Entity Incorporation, State or Country Code	TX
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
Title of 12(b) Security	Common Stock
Trading Symbol	GEOS
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		12,709,381
Entity Public Float			$ 164,000,000
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, 2024	Sep. 30, 2023
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Current assets:
Cash and cash equivalents	$ 6,895	$ 18,803
Short-term investments	30,227	14,921
Trade accounts and notes receivable, net	21,868	21,373
Inventories, net	26,222	18,430
Assets held for sale	1,841	0
Prepaid expenses and other current assets	2,313	2,251
Total current assets	89,366	75,778
Non-current inventories, net	18,031	24,888
Rental equipment, net	14,186	21,587
Property, plant and equipment, net	21,083	24,048
Non-current trade accounts and note receivable, net	6,375	0
Operating right-of-use assets	464	714
Goodwill	736	736
Other intangible assets, net	1,649	4,805
Other non-current assets	304	486
Total assets	152,194	153,042
Current liabilities:
Accounts payable trade	8,003	6,659
Operating lease liabilities	173	257
Other current liabilities	9,021	12,882
Total current liabilities	17,197	19,798
Non-current operating lease liabilities	339	512
Deferred tax liabilities, net	34	16
Total liabilities	17,570	20,326
Commitments and contingencies (See Note 18)
Stockholders’ equity:
Preferred stock, 1,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $.01 par value, 20,000,000 shares authorized, 14,206,082 and 14,030,481 shares issued, respectively; and 12,709,381 and 13,188,489 shares outstanding, respectively	142	140
Additional paid-in capital	97,342	96,040
Retained earnings	55,282	61,860
Accumulated other comprehensive loss	(4,257)	(17,824)
Treasury stock, at cost, 1,496,701 shares and 841,992 shares, respectively	(13,885)	(7,500)
Total stockholders’ equity	134,624	132,716
Total liabilities and stockholders’ equity	$ 152,194	$ 153,042

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 30, 2024	Sep. 30, 2023
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	14,206,082	14,030,481
Common stock, outstanding (in shares)	12,709,381	13,188,489
Treasury stock, shares (in shares)	1,496,701	841,992

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenue:
Revenue from Contract with Customer, Excluding Assessed Tax	$ 135,598	$ 124,509
Cost of revenue:
Total cost of revenue	83,025	72,819
Gross profit	52,573	51,690
Operating expenses:
Selling, general and administrative	26,554	25,952
Research and development	16,251	15,863
Other intangible asset impairment	2,761	0
Provision for (recovery of) credit losses	(110)	(138)
Total operating expenses	45,456	41,677
Income from operations	7,117	11,328
Other income (expense):
Loss on sale of subsidiary	(14,539)	0
Interest expense	(187)	(134)
Interest income	1,558	539
Foreign currency transaction gains (losses), net	(270)	994
Other, net	(143)	(158)
Total other income (expense), net	(13,581)	1,241
Income (loss) before income taxes	(6,464)	12,569
Income tax expense	114	363
Net income (loss)	$ (6,578)	$ 12,206
Income (loss) per common share:
Basic (in dollars per share)	$ (0.5)	$ 0.93
Diluted (in dollars per share)	$ (0.5)	$ 0.92
Weighted average common shares outstanding:
Basic (in shares)	13,151,600	13,146,085
Diluted (in shares)	13,151,600	13,215,066
Satellite Property [Member]
Operating expenses:
Gain on disposal of property	$ 0	$ 1,315
Product [Member]
Revenue:
Revenue from Contract with Customer, Excluding Assessed Tax	116,036	73,333
Cost of revenue:
Total cost of revenue	69,318	55,136
Rental [Member]
Revenue:
Revenue from Contract with Customer, Excluding Assessed Tax	19,562	51,176
Cost of revenue:
Total cost of revenue	$ 13,707	$ 17,683

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Net income (loss)	$ (6,578)	$ 12,206
Other comprehensive income (loss):
Recognition of cumulative translation adjustments due to sale of foreign entity	13,083	0
Foreign currency translation adjustments	417	(2,515)
Change in unrealized gains on available-for-sale securities, net of tax	67	4
Total other comprehensive income (loss), net	13,567	(2,511)
Total comprehensive income	$ 6,989	$ 9,695

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Sep. 30, 2022	13,021,241
Balance at Sep. 30, 2022		$ 139	$ 94,667	$ 49,654	$ (15,313)	$ (7,500)	$ 121,647
Net income (loss)		0	0	12,206	0	0	12,206
Other comprehensive income (loss)		0	0	0	(2,511)	0	(2,511)
Issuance of common stock pursuant to the vesting of restricted stock units (in shares)	167,248
Issuance of common stock pursuant to the vesting of restricted stock units		1	(1)	0	0	0	0
Stock-based compensation		0	1,374	0	0	0	1,374
Balance (in shares) at Sep. 30, 2023	13,188,489
Balance at Sep. 30, 2023		140	96,040	61,860	(17,824)	(7,500)	132,716
Net income (loss)		0	0	(6,578)	0	0	(6,578)
Other comprehensive income (loss)		0	0	0	13,567	0	13,567
Issuance of common stock pursuant to the vesting of restricted stock units (in shares)	175,601
Issuance of common stock pursuant to the vesting of restricted stock units		2	(2)	0	0	0	0
Stock-based compensation		0	1,304	0	0	0	1,304
Purchase of treasury stock (in shares)	(654,709)
Purchase of treasury stock		0	0	0	0	(6,385)	(6,385)
Balance (in shares) at Sep. 30, 2024	12,709,381
Balance at Sep. 30, 2024		$ 142	$ 97,342	$ 55,282	$ (4,257)	$ (13,885)	$ 134,624

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ (6,578)	$ 12,206
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred income tax expense	18	3
Rental equipment depreciation	10,859	11,766
Property, plant and equipment depreciation	3,512	3,704
Amortization of intangible assets	395	768
Intangible assets impairment expense	2,761	0
Accretion of discounts on short-term investments	(566)	(144)
Stock-based compensation expense	1,304	1,374
Provision for (recovery of) credit losses	(110)	(138)
Inventory obsolescence expense	589	2,229
Loss on sale of subsidiary	14,539	0
Realized foreign currency translation gain from dissolution of foreign subsidiary	0	38
Gross profit from sale of rental equipment	(30,998)	(4,424)
Effects of changes in operating assets and liabilities:
Trade accounts and notes receivable	6,593	(5,561)
Inventories	(10,985)	(11,026)
Other assets	(199)	442
Accounts payable trade	2,746	41
Other liabilities	(2,979)	5,351
Net cash provided by (used in) operating activities	(9,083)	15,558
Cash flows from investing activities:
Purchase of property, plant and equipment	(3,857)	(3,964)
Investment in rental equipment	(8,321)	(9,920)
Proceeds from the sale of property, plant and equipment	9	4,406
Proceeds from the sale of rental equipment	31,964	11,478
Purchase of short-term investments	(32,078)	(24,782)
Proceeds from the sale of short-term investments	17,338	10,900
Cash disposed from sale of subsidiary	(1,231)	0
Net cash provided by (used in) investing activities	3,824	(11,882)
Cash flows from financing activities:
Payments of contingent consideration	0	(175)
Debt issuance costs	0	(350)
Purchase of treasury stock	(6,385)	0
Net cash used in financing activities	(6,385)	(525)
Effect of exchange rate changes on cash	(264)	(457)
Increase (decrease) in cash and cash equivalents	(11,908)	2,694
Cash and cash equivalents, beginning of fiscal year	18,803	16,109
Cash and cash equivalents, end of fiscal year	6,895	18,803
Equipment [Member]
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (gain) on disposal of property and equipment	16	244
Satellite Property [Member]
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (gain) on disposal of property and equipment	$ 0	$ (1,315)

Insider Trading Arrangements

Insider Trading Arrangements	12 Months Ended
	Sep. 30, 2024
Insider Trading Arr Line Items
Rule 10b5-1 Arrangement Terminated [Flag]	false
Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. 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 accounting principles generally accepted in the United States of America ("U.S. GAAP"). All significant intercompany balances and transactions have been eliminated. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP 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, credit loss, 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 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 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 September 30, 2024 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 not may not Two customers each comprised 27.4% and 16.0% of the Company’s revenue during fiscal year 2024 September 30, 2024 2023 September 30, 2023 Supplier Certain models of the Company’s oil and gas marine wireless products require a timing device it purchases from a United States of America manufacturer. The Company currently does not no 2024 2023 The Company purchases all of its thermal film from one no 2024 2023 In June 2016, October 1, 2023. not Short-term Investments The Company classifies its short-term investments as available-for-sale debt securities which have maturities of less than one not 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 first 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 The Company reviews it inventories for classification purposes. The value of inventories not 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 At September 30, 2024 Goodwill The Company conducts its evaluation of goodwill at the reporting unit level on an annual basis as of September 30 first not not not 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 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 Changes in the product warranty reserve are reflected in the following table (in thousands): Balance at October 1, 2022 $ 524 Accruals for warranties issued during the year 1,655 Settlements made (in cash or in kind) during the year (1,521 ) Balance at September 30, 2023 658 Accruals for warranties issued during the year 2,331 Settlements made (in cash or in kind) during the year (1,738 ) Balance at September 30, 2024 $ 1,251 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, 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 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 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. U.S. GAAP has established a fair value hierarchy which prioritizes the inputs to the valuation techniques used to measure fair value into three 1 2 1 3 one 5 Income Taxes Income taxes are presented in accordance with the Accounting Standards Codification Topic 740 740” not not The Company follows the guidance of Topic 740 740 740, not” Recently Adopted Accounting Pronouncements In June 2016, October 1, 2023. not Recently Issued Accounting Pronouncements In November 2023, December 15, 2023, December 15, 2024. In December 2023, fourth 2026. not

Note 2 - Revenue Recognition

Note 2 - Revenue Recognition	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	2. In accordance with ASC Topic 606, Revenue from Contracts with Customers 606” 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 not not not 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 606 not 842, Leases As permissible under ASC 606, not one one 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 September 30, 2024 2023 At September 30, 2024 September 30, 2023, October 1, 2022, October 1, 2022, September 30, 2024 September 30, 2023 no September 30, 2024 one For the fiscal years ended September 30, 2024 2023 September 30, 2024 2023 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, 2024 2023 Oil and Gas Markets Traditional exploration product revenue $ 9,666 $ 12,081 Wireless exploration product revenue 48,094 10,168 Reservoir product revenue 596 962 Total revenue 58,356 23,211 Adjacent Markets Industrial product revenue 43,058 36,859 Imaging product revenue 12,400 12,029 Total revenue 55,458 48,888 Emerging Markets Revenue 2,222 1,234 Total $ 116,036 $ 73,333 See Note 20 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, 2024 2023 Asia (including Russian Federation) $ 43,831 $ 13,006 Canada 1,578 1,032 Europe 6,430 5,976 Mexico 1,959 1,792 South America 384 448 United States 61,009 49,828 Other 845 1,251 $ 116,036 $ 73,333 Revenue is attributable to countries based on the ultimate destination of the product sold, if known. If the ultimate destination is not

Note 3 - Sale of Subsidiary

Note 3 - Sale of Subsidiary	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	3. On August 30, 2024, 90 September 30, 2024. not not 5. The Company has determined that the Buyer's legal entity is a variable interest entity ("VIE") due to the nature of the financing for the transaction. A VIE is an entity in which equity investors lack the characteristics of a controlling financial interest or do not While the debt represents a direct obligation to absorb significant losses of the VIE, the debt does not no no no not September 30, 2024

Note 4 - Short-term Investments

Note 4 - Short-term Investments	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	4. The Company classifies its short-term investments as available-for-sale debt securities. These 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. The Company’s short-term investments were composed of the following (in thousands): AS OF SEPTEMBER 30, 2024 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Short-term investments: Corporate bonds $ 21,814 $ 35 $ — $ 21,849 U.S. treasury securities and securities of U.S. government-sponsored agency 8,356 22 — 8,378 Total $ 30,170 $ 57 $ — $ 30,227 AS OF SEPTEMBER 30, 2023 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Short-term investments: Corporate bonds $ 11,310 $ — $ (15 ) $ 11,295 U.S. treasury securities and securities of U.S. government-sponsored agency 3,622 4 — 3,626 Total $ 14,932 $ 4 $ (15 ) $ 14,921 At September 30, 2024 2023 The Company has no debt securities in a material unrealized loss position at September 30, 2024 2023 not not September 30, 2024 2023 The Company’s short-term investments have contractual maturities ranging from October 2024 September 2025.

Note 5 - Fair Value of Financia

Note 5 - Fair Value of Financial Instruments	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Fair Value Disclosures [Text Block]	5. The Company’s financial instruments generally include cash and cash equivalents, short-term investments, trade accounts, notes receivable and accounts payable. Due to the short-term maturities of cash and cash equivalents, trade accounts and notes receivable and accounts payable, the carrying amounts approximate fair value on the respective balance sheet dates. The Company measures its short-term investments at fair value on a recurring basis. The following tables present the fair value of the Company’s short-term investments and note receivable on sale of subsidiary by valuation hierarchy and input (in thousands): AS OF SEPTEMBER 30, 2024 (Level 1) (Level 2) (Level 3) Totals Recurring: Short-term investments . Corporate bonds $ — $ 21,849 $ — $ 21,849 U.S. treasury securities and securities of U.S. government-sponsored agency — 8,378 — 8,378 Total recurring $ — $ 30,227 $ — $ 30,227 Nonrecurring: Note receivable on sale of subsidiary $ — $ — $ 2,600 $ 2,600 AS OF SEPTEMBER 30, 2023 (Level 1) (Level 2) (Level 3) Totals Short-term investments: Corporate bonds $ — $ 11,295 $ — $ 11,295 U.S. treasury securities and securities of U.S. government-sponsored agency — 3,626 — 3,626 Total $ — $ 14,921 $ — $ 14,921 Assets and Liabilities Measured on a Nonrecurring Basis The Company performed a fair value analysis of the $3.5 million promissory note obtained in connection with its subsidiary sale as of the August 2024 3 3 The measurements utilized to determine the implied fair value of the Company's Emerging Markets asset group as of September 30, 2024 3 11

Note 6 - Accumulated Other Comp

Note 6 - Accumulated Other Comprehensive Loss	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	6. Accumulated other comprehensive loss consisted of the following (in thousands): Unrealized Losses on Available-for-Sale Securities Foreign Currency Translation Adjustments Total Balance at October 1, 2022 $ (15 ) $ (15,298 ) $ (15,313 ) Other comprehensive income (loss) 4 (2,515 ) (2,511 ) Balance at September 30, 2023 $ (11 ) (17,813 ) (17,824 ) Other comprehensive income 67 13,500 13,567 Balance at September 30, 2024 $ 56 $ (4,313 ) $ (4,257 )

Note 7 - Trade Accounts and Not

Note 7 - Trade Accounts and Notes Receivable	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	7. Trade accounts receivable, net (excluding notes receivable) are reflected in the following table (in thousands): AS OF SEPTEMBER 30, 2024 2023 Trade accounts receivable $ 16,151 $ 20,282 Allowance for credit losses (4 ) (125 ) Total 16,147 20,157 Less current portion (14,637 ) (20,157 ) Non-current trade accounts receivable $ 1,510 $ — Allowances for credit losses related to trade accounts receivable are reflected in the following table (in thousands): AS OF SEPTEMBER 30, 2024 2023 Allowance for credit losses: Beginning of period 125 591 Provision for credit losses 65 428 Recoveries (175 ) (566 ) Write-offs (11 ) (303 ) Currency translation — (25 ) End of period $ 4 $ 125 Trade accounts receivable at September 30, 2024 December 2025. not Notes receivable are reflected in the following table (in thousands): AS OF SEPTEMBER 30, 2024 2023 Notes receivable $ 12,996 $ 1,216 Discount to fair value (900 ) — 12,096 1,216 Less current portion (7,231 ) (1,216 ) Non-current notes receivable $ 4,865 $ — In August 2024, December 2025. January 2025. In August 2024, November 2024. Credit quality indicators used for the non-current portion of trade accounts and notes receivable consisted of historical collection experience, internal credit risk grades and collateral. The Company determines the allowance for credit losses through a review of several factors, including historical collection experience, customer credit worthiness, current aging of customer accounts and current financial conditions of its customers.

Note 8 - Inventories

Note 8 - Inventories	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Inventory Disclosure [Text Block]	8. Inventories consisted of the following (in thousands): AS OF SEPTEMBER 30, 2024 2023 Finished goods $ 18,099 $ 18,555 Work in process 3,626 11,992 Raw materials 30,941 26,832 Obsolescence reserve (net realizable value adjustment) (8,413 ) (14,061 ) 44,253 43,318 Less current portion 26,222 18,430 Non-current portion $ 18,031 $ 24,888 Inventory obsolescence expense totaled $0.6 million and $2.2 million during fiscal years 2024 2023 September 30, 2024 2023

Note 9 - Leases

Note 9 - Leases - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 135,598	$ 124,509
Notes to Financial Statements
Leases Disclosure [Text Block]	9. As Lessee The Company has elected not 12 September 30, 2024 two Maturities of the operating lease liabilities as of September 30, 2024 For fiscal years ending September 30, 2025 186 2026 130 2027 134 2028 93 Future minimum lease payments $ 543 Less interest (31 ) Present value of minimum lease payments $ 512 Less current portion (173 ) Long-term portion $ 339 Lease costs recognized in the consolidated statements of operations for the fiscal years ended September 30, 2024 2023 YEAR ENDED SEPTEMBER 30, 2024 2023 Right-of-use operating lease costs $ 271 $ 272 Short-term lease costs 123 220 Total $ 394 $ 492 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, 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 278 $ 270 Weighted average remaining lease term 3.4 years 3.9 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 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 September 30, 2024 Rental revenue leased equipment 2024 2023 Future minimum lease obligations due from the Company's leasing customers as of September 30, 2024 12 Rental equipment consisted of the following (in thousands): AS OF SEPTEMBER 30, 2024 2023 Rental equipment, primarily wireless recording equipment $ 63,111 $ 82,926 Accumulated depreciation and impairment (48,925 ) (61,339 ) $ 14,186 $ 21,587 Rental equipment depreciation expense was $10.8 million and $11.8 million in fiscal years 2024 2023 Property During the first 2022, November 2021 five December 2021 Rental revenue related to these two 2024 2023 Future minimum lease payments due to the Company as of September 30, 2024 For fiscal years ending September 30, 2025 131 2026 132 2027 11 $ 274

Note 10 - Property, Plant and E

Note 10 - Property, Plant and Equipment	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	10. At September 30, 2024 7007 September 30, 2024 In February 2023, 6410 7007 Property, plant and equipment consisted of the following (in thousands): AS OF SEPTEMBER 30, 2024 2023 Land and land improvements $ 4,869 $ 7,069 Building and building improvements 21,312 21,931 Machinery and equipment 49,860 48,877 Furniture and fixtures 1,470 1,487 Tools and molds 3,628 3,287 Construction in progress 392 3,343 Transportation equipment 75 74 81,606 86,068 Accumulated depreciation and impairment (60,523 ) (62,020 ) $ 21,083 $ 24,048 Property, plant and equipment depreciation expense was $3.5 million and $3.7 million for the fiscal years ended September 30, 2024 2023

Note 11 - Goodwill and Other In

Note 11 - Goodwill and Other Intangible Assets	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	11. At September 30, 2024 At September 30, 2024 Also see Note 1 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, 2024 2023 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 ) (4,336 ) $ 736 $ 736 Other intangible assets: Developed technology 4.5 $ 2,275 $ 6,475 Customer relationships — 3,900 3,900 Trade names 0.1 2,022 2,022 Non-compete agreements 0.1 186 186 Total other intangible assets 2.3 8,383 12,583 Accumulated amortization (6,734 ) (7,778 ) $ 1,649 $ 4,805 Other intangible assets amortization expense for fiscal years 2024 2023 As of September 30, 2024 2025 148 2026 140 2027 126 2028 126 2029 126 Thereafter 983 $ 1,649

Note 12 - Long-term Debt

Note 12 - Long-term Debt	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Debt Disclosure [Text Block]	12. The Company had no long-term debt outstanding at September 30, 2024 2023 On July 26, 2023, May 6, 2022, no 1.00, 1.00, July 2025. September 30, 2024 September 30, 2024 Debt issuance costs of $0.4 million were incurred in connection with the Agreement in fiscal year 2023.

Note 13 - Other Current Liabili

Note 13 - Other Current Liabilities	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	13. Other current liabilities consisted of the following (in thousands): AS OF SEPTEMBER 30, 2024 2023 Deferred revenue $ 1,427 $ 4,368 Employee bonuses 1,050 1,665 Compensated absences 1,821 1,746 Payroll 426 940 Property and sales taxes 1,062 974 Legal and professional fees 355 616 Medical claims 538 641 Agent commissions 329 211 Product warranty 1,251 658 Income taxes 17 117 Other 745 946 $ 9,021 $ 12,882 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 $0.2 million 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.

Note 14 - Employee Benefits

Note 14 - Employee Benefits	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Retirement Benefits [Text Block]	14. The Company’s United States employees are participants in the Geospace Technologies Corporation’s Employee’s 401 may 2024 2023 The Company’s stock incentive plans in which key employees may 15

Note 15 - Stockholders' Equity

Note 15 - Stockholders' Equity	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Equity [Text Block]	15. Equity In February 2014, 2014 “2014 2014 may 2014 not ten ten not five may not ten may not one 2014 may no 2014 At September 30, 2024 2014 The following table summarizes the combined activity under the equity incentive plans for the indicated periods: Number of Nonqualified Options Outstanding Weighted Average Exercise Price per Share Number of RSAs Weighted Average Grant-date Fair Value per Share Number of RSUs Weighted Average Grant-date Fair Value per Unit Outstanding at October 1, 2022 — $ — 1,000 $ 14.59 323,859 $ 9.54 Granted — — — — 228,250 4.70 Forfeited — — — — (7,312 ) 8.44 Vested — — (1,000 ) 14.59 (167,248 ) 9.94 Outstanding at September 30, 2023 — — — — 377,549 $ 6.46 Granted — — — — 233,200 12.26 Forfeited — — — — (26,253 ) 6.47 Vested — — — — (175,601 ) 7.08 Outstanding at September 30, 2024 — $ — — $ — 408,895 $ 9.50 During fiscal years 2024 2023 2014 2024 2023 2024 2023 1 4 September 30, 2024 2023 2014 No RSAs have been issued since fiscal year 2019 none September 30, 2024 Stock-based compensation expense recognized for the fiscal years ended September 30, 2024 2023 September 30, 2024

Note 16 - Income Taxes

Note 16 - Income Taxes	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Income Tax Disclosure [Text Block]	16. Components of income (loss) before income taxes were as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2024 2023 United States $ (6,930 ) $ 11,190 Foreign 466 1,379 $ (6,464 ) $ 12,569 The provision for income taxes consisted of the following (in thousands): YEAR ENDED SEPTEMBER 30, 2024 2023 Current Federal $ — $ 63 Foreign 55 244 State 41 59 96 366 Deferred: Federal — — Foreign 18 (3 ) 18 (3 ) $ 114 $ 363 The difference between the effective tax rate reflected in the provision for income taxes and the U.S. federal statutory rate were as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2024 YEAR ENDED SEPTEMBER 30, 2023 Amount Percent Amount Percent Expense (benefit) for U.S. federal income tax at statutory rate $ (1,357 ) 21.0 % $ 2,639 21.0 % Research and experimentation tax credit (572 ) 8.8 % (480 ) (3.9 )% State income taxes, net of federal income tax benefit 32 (0.5 )% 302 2.5 % Change in valuation allowance 1,934 (29.9 )% (2,459 ) (19.6 )% Foreign earnings tax 125 (1.9 )% — — Stock compensation (210 ) 3.2 % 171 1.4 % Impact due to foreign currency translation (44 ) 0.7 % 51 0.4 % Other items 206 (3.2 )% 139 1.1 % Total tax expense and effective tax rate $ 114 (1.8 )% $ 363 2.9 % The income tax expense for fiscal years 2024 2023 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): YEAR ENDED SEPTEMBER 30, 2024 2023 Deferred income tax assets: Inventories $ 5,447 $ 8,269 Loss and tax credit carryforwards 31,850 29,581 Accrued compensation 733 870 R&D expenditure capitalization 3,064 1,538 Intangible assets 290 — Property and equipment 331 504 Other reserves 456 590 Subtotal deferred income tax assets 42,171 41,352 Valuation allowance (40,851 ) (38,917 ) Net deferred income tax assets 1,320 2,435 Deferred income tax liabilities: Intangible assets — (292 ) Property and equipment (1,249 ) (2,153 ) Other (105 ) (6 ) Total deferred income tax liabilities (1,354 ) (2,451 ) Net deferred income tax liabilities $ (34 ) $ (16 ) The financial reporting basis of investments in foreign subsidiaries exceed their tax basis. A deferred tax liability is not September 30, 2024 September 30, 2024 2023 no The Company is subject to taxation in the United States as well as various states and foreign jurisdictions. Tax years that remain subject to examination by significant tax jurisdictions are the United States for tax years ending after 2016, 2022, 2019. At of September 30, 2024 2033. 2017 2029 2017 not Management of the Company has concluded that it was not not September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 September 30, 2023

Note 17 - Income (Loss) Per Com

Note 17 - Income (Loss) Per Common Share	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Earnings Per Share [Text Block]	17. Basic earnings (loss) per share is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares used in basic earnings (loss) per share during the period. Diluted earnings (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 income (loss) and weighted average common shares and common equivalent shares outstanding for purposes of the computation of earnings (loss) per share (in thousands, except share and per share amounts): YEAR ENDED SEPTEMBER 30, 2024 2023 Net income (loss) $ (6,578 ) $ 12,206 Less: Income allocable to unvested restricted stock — — Income (loss) attributable to common shareholders for diluted earnings (loss) per share $ (6,578 ) $ 12,206 Weighted average number of common share equivalents: Common shares used in basic earnings (loss) per share 13,151,600 13,146,085 Common share equivalents outstanding related to RSUs — 68,981 Total weighted average common shares and common share equivalents used in diluted earnings (loss) per share 13,151,600 13,215,066 Earnings (loss) per share: Basic $ (0.50 ) $ 0.93 Diluted $ (0.50 ) $ 0.92 For the calculation of diluted earnings (loss) per share for fiscal years 2024 2023

Note 18 - Commitments and Conti

Note 18 - Commitments and Contingencies	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	18. Contingent Compensation Costs In connection with the acquisition of Aquana, LLC ("Aquana") in 2021, six no first four six no 2024 2023. 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

Note 19 - Supplemental Cash Flo

Note 19 - Supplemental Cash Flow Information	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Cash Flow, Supplemental Disclosures [Text Block]	19. Supplemental cash flow information is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2024 2023 Cash paid for income taxes $ 164 $ 151 Non-cash investing and financing activities: Inventory transferred to rental equipment 5,954 587 Note and accounts receivable related to sale of subsidiary 3,600 — Note receivable and accrued interest related to sale of rental equipment 9,496 — Account receivable related to sale of rental equipment 1,510 —

Note 20 - Segment Information

Note 20 - Segment Information	12 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	20 Segment and Geographic Information The Company reports and evaluates financial information for three The following tables summarize the Company’s segment information: YEAR ENDED SEPTEMBER 30, 2024 2023 Revenue: Oil and Gas Markets $ 77,455 $ 73,993 Adjacent Markets 55,625 49,039 Emerging Markets 2,222 1,234 Corporate 296 243 135,598 124,509 Income (loss) from operations: Oil and Gas Markets 13,134 15,759 Adjacent Markets 14,152 11,490 Emerging Markets (6,193 ) (4,003 ) Corporate (13,976 ) (11,918 ) 7,117 11,328 Depreciation and amortization expenses: Oil and Gas Markets 13,243 14,428 Adjacent Markets 860 703 Emerging Markets 275 565 Corporate 388 542 14,766 16,238 Impairment, inventory obsolescence and stock-based compensation expenses: Oil and Gas Markets 993 2,329 Adjacent Markets 221 656 Emerging Markets 2,798 52 Corporate 642 566 4,654 3,603 Interest income: Oil and Gas Markets 315 352 Adjacent Markets — — Emerging Markets — — Corporate 1,243 187 1,558 539 Interest expense: Oil and Gas Markets 17 105 Adjacent Markets — — Emerging Markets — — Corporate 170 29 187 134 The Company’s manufacturing operations for its business segments are combined. Therefore, the Company does not no “Corporate” expense 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, 2024 2023 United States $ 127,488 $ 118,017 Canada 1,777 1,924 Russian Federation 3,487 1,850 United Kingdom 2,846 2,718 $ 135,598 $ 124,509 A summary of revenue by geographic area is as follows (in thousands): YEAR ENDED SEPTEMBER 30, 2024 2023 Asia (including Russian Federation) $ 51,103 $ 26,685 Canada 2,015 2,703 Europe 13,817 20,826 Mexico 1,959 1,792 South America 2,798 8,166 United States 63,061 62,611 Other 845 1,726 $ 135,598 $ 124,509 Revenue is attributed to countries based on the ultimate destination of the product sold, if known. If the ultimate destination is not Long-lived asset balances are as follows (in thousands): AS OF SEPTEMBER 30, 2024 2023 United States $ 61,487 $ 75,321 Canada 414 575 Colombia 399 442 Russian Federation — 543 United Kingdom 528 383 $ 62,828 $ 77,264

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation The accompanying financial statements present the consolidated financial position, results of operations and cash flows of the Company in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). All significant intercompany balances and transactions have been eliminated.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP 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, credit loss, 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 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
Cash and Cash Equivalents, Policy [Policy Text Block]	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 September 30, 2024
Concentration Risk, Credit Risk, Policy [Policy Text Block]	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 not may not Two customers each comprised 27.4% and 16.0% of the Company’s revenue during fiscal year 2024 September 30, 2024 2023 September 30, 2023 Supplier Certain models of the Company’s oil and gas marine wireless products require a timing device it purchases from a United States of America manufacturer. The Company currently does not no 2024 2023 The Company purchases all of its thermal film from one no 2024 2023 In June 2016, October 1, 2023. not
Investment, Policy [Policy Text Block]	Short-term Investments The Company classifies its short-term investments as available-for-sale debt securities which have maturities of less than one not
Inventory, Policy [Policy Text Block]	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 first 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 The Company reviews it inventories for classification purposes. The value of inventories not
Property, Plant and Equipment, Policy [Policy Text Block]	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 or Disposal of Long-Lived Assets, Policy [Policy Text Block]	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 At September 30, 2024
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill The Company conducts its evaluation of goodwill at the reporting unit level on an annual basis as of September 30 first not not not
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	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 [Policy Text Block]	Revenue Recognition See Note 2
Research and Development Expense, Policy [Policy Text Block]	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.
Standard Product Warranty, Policy [Policy Text Block]	Product Warranties Most of the Company’s products do not Changes in the product warranty reserve are reflected in the following table (in thousands): Balance at October 1, 2022 $ 524 Accruals for warranties issued during the year 1,655 Settlements made (in cash or in kind) during the year (1,521 ) Balance at September 30, 2023 658 Accruals for warranties issued during the year 2,331 Settlements made (in cash or in kind) during the year (1,738 ) Balance at September 30, 2024 $ 1,251
Share-Based Payment Arrangement [Policy Text Block]	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, 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
Foreign Currency Transactions and Translations Policy [Policy Text Block]	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
Fair Value of Financial Instruments, Policy [Policy Text Block]	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. U.S. GAAP has established a fair value hierarchy which prioritizes the inputs to the valuation techniques used to measure fair value into three 1 2 1 3 one 5
Income Tax, Policy [Policy Text Block]	Income Taxes Income taxes are presented in accordance with the Accounting Standards Codification Topic 740 740” not not The Company follows the guidance of Topic 740 740 740, not”
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Pronouncements In June 2016, October 1, 2023. not Recently Issued Accounting Pronouncements In November 2023, December 15, 2023, December 15, 2024. In December 2023, fourth 2026. not

Note 1 - Summary of Significa_2

Note 1 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Property, Plant and Equipment, Estimated Useful Life [Table Text Block]	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 Finite-Lived Intangible Assets [Table Text Block]	Years Developed technology 18 Trade names 5 Customer relationships 4 Non-compete agreements 4
Schedule of Product Warranty Liability [Table Text Block]	Balance at October 1, 2022 $ 524 Accruals for warranties issued during the year 1,655 Settlements made (in cash or in kind) during the year (1,521 ) Balance at September 30, 2023 658 Accruals for warranties issued during the year 2,331 Settlements made (in cash or in kind) during the year (1,738 ) Balance at September 30, 2024 $ 1,251

Note 2 - Revenue Recognition (T

Note 2 - Revenue Recognition (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Disaggregation of Revenue [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Oil and Gas Markets Traditional exploration product revenue $ 9,666 $ 12,081 Wireless exploration product revenue 48,094 10,168 Reservoir product revenue 596 962 Total revenue 58,356 23,211 Adjacent Markets Industrial product revenue 43,058 36,859 Imaging product revenue 12,400 12,029 Total revenue 55,458 48,888 Emerging Markets Revenue 2,222 1,234 Total $ 116,036 $ 73,333
Revenue from External Customers by Geographic Areas [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Asia (including Russian Federation) $ 43,831 $ 13,006 Canada 1,578 1,032 Europe 6,430 5,976 Mexico 1,959 1,792 South America 384 448 United States 61,009 49,828 Other 845 1,251 $ 116,036 $ 73,333

Note 4 - Short-term Investmen_2

Note 4 - Short-term Investments (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]	AS OF SEPTEMBER 30, 2024 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Short-term investments: Corporate bonds $ 21,814 $ 35 $ — $ 21,849 U.S. treasury securities and securities of U.S. government-sponsored agency 8,356 22 — 8,378 Total $ 30,170 $ 57 $ — $ 30,227 AS OF SEPTEMBER 30, 2023 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Short-term investments: Corporate bonds $ 11,310 $ — $ (15 ) $ 11,295 U.S. treasury securities and securities of U.S. government-sponsored agency 3,622 4 — 3,626 Total $ 14,932 $ 4 $ (15 ) $ 14,921

Note 5 - Fair Value of Financ_2

Note 5 - Fair Value of Financial Instruments (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	AS OF SEPTEMBER 30, 2024 (Level 1) (Level 2) (Level 3) Totals Recurring: Short-term investments . Corporate bonds $ — $ 21,849 $ — $ 21,849 U.S. treasury securities and securities of U.S. government-sponsored agency — 8,378 — 8,378 Total recurring $ — $ 30,227 $ — $ 30,227 Nonrecurring: Note receivable on sale of subsidiary $ — $ — $ 2,600 $ 2,600 AS OF SEPTEMBER 30, 2023 (Level 1) (Level 2) (Level 3) Totals Short-term investments: Corporate bonds $ — $ 11,295 $ — $ 11,295 U.S. treasury securities and securities of U.S. government-sponsored agency — 3,626 — 3,626 Total $ — $ 14,921 $ — $ 14,921

Note 6 - Accumulated Other Co_2

Note 6 - Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	Unrealized Losses on Available-for-Sale Securities Foreign Currency Translation Adjustments Total Balance at October 1, 2022 $ (15 ) $ (15,298 ) $ (15,313 ) Other comprehensive income (loss) 4 (2,515 ) (2,511 ) Balance at September 30, 2023 $ (11 ) (17,813 ) (17,824 ) Other comprehensive income 67 13,500 13,567 Balance at September 30, 2024 $ 56 $ (4,313 ) $ (4,257 )

Note 7 - Trade Accounts and N_2

Note 7 - Trade Accounts and Notes Receivable (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Accounts Receivable [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 Trade accounts receivable $ 16,151 $ 20,282 Allowance for credit losses (4 ) (125 ) Total 16,147 20,157 Less current portion (14,637 ) (20,157 ) Non-current trade accounts receivable $ 1,510 $ —
Accounts Receivable, Allowance for Credit Loss [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 Allowance for credit losses: Beginning of period 125 591 Provision for credit losses 65 428 Recoveries (175 ) (566 ) Write-offs (11 ) (303 ) Currency translation — (25 ) End of period $ 4 $ 125
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 Notes receivable $ 12,996 $ 1,216 Discount to fair value (900 ) — 12,096 1,216 Less current portion (7,231 ) (1,216 ) Non-current notes receivable $ 4,865 $ —

Note 8 - Inventories (Tables)

Note 8 - Inventories (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Inventory, Current and Noncurrent [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 Finished goods $ 18,099 $ 18,555 Work in process 3,626 11,992 Raw materials 30,941 26,832 Obsolescence reserve (net realizable value adjustment) (8,413 ) (14,061 ) 44,253 43,318 Less current portion 26,222 18,430 Non-current portion $ 18,031 $ 24,888

Note 9 - Leases (Tables)

Note 9 - Leases (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]	For fiscal years ending September 30, 2025 186 2026 130 2027 134 2028 93 Future minimum lease payments $ 543 Less interest (31 ) Present value of minimum lease payments $ 512 Less current portion (173 ) Long-term portion $ 339
Lease, Cost [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Right-of-use operating lease costs $ 271 $ 272 Short-term lease costs 123 220 Total $ 394 $ 492
Summary of Other Information Related to Lease Liabilities [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 278 $ 270 Weighted average remaining lease term 3.4 years 3.9 years Weighted average discount rate 3.25 % 3.25 %
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 Rental equipment, primarily wireless recording equipment $ 63,111 $ 82,926 Accumulated depreciation and impairment (48,925 ) (61,339 ) $ 14,186 $ 21,587
Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block]	For fiscal years ending September 30, 2025 131 2026 132 2027 11 $ 274

Note 10 - Property, Plant and_2

Note 10 - Property, Plant and Equipment (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Property, Plant and Equipment [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 Land and land improvements $ 4,869 $ 7,069 Building and building improvements 21,312 21,931 Machinery and equipment 49,860 48,877 Furniture and fixtures 1,470 1,487 Tools and molds 3,628 3,287 Construction in progress 392 3,343 Transportation equipment 75 74 81,606 86,068 Accumulated depreciation and impairment (60,523 ) (62,020 ) $ 21,083 $ 24,048

Note 11 - Goodwill and Other _2

Note 11 - Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Intangible Assets and Goodwill [Table Text Block]	Weighted-Average Remaining Useful Lives (in years) AS OF SEPTEMBER 30, 2024 2023 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 ) (4,336 ) $ 736 $ 736 Other intangible assets: Developed technology 4.5 $ 2,275 $ 6,475 Customer relationships — 3,900 3,900 Trade names 0.1 2,022 2,022 Non-compete agreements 0.1 186 186 Total other intangible assets 2.3 8,383 12,583 Accumulated amortization (6,734 ) (7,778 ) $ 1,649 $ 4,805
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2025 148 2026 140 2027 126 2028 126 2029 126 Thereafter 983 $ 1,649

Note 13 - Other Current Liabi_2

Note 13 - Other Current Liabilities (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Other Current Liabilities [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 Deferred revenue $ 1,427 $ 4,368 Employee bonuses 1,050 1,665 Compensated absences 1,821 1,746 Payroll 426 940 Property and sales taxes 1,062 974 Legal and professional fees 355 616 Medical claims 538 641 Agent commissions 329 211 Product warranty 1,251 658 Income taxes 17 117 Other 745 946 $ 9,021 $ 12,882

Note 15 - Stockholders' Equity

Note 15 - Stockholders' Equity (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Share-Based Payment Arrangement, Activity [Table Text Block]	Number of Nonqualified Options Outstanding Weighted Average Exercise Price per Share Number of RSAs Weighted Average Grant-date Fair Value per Share Number of RSUs Weighted Average Grant-date Fair Value per Unit Outstanding at October 1, 2022 — $ — 1,000 $ 14.59 323,859 $ 9.54 Granted — — — — 228,250 4.70 Forfeited — — — — (7,312 ) 8.44 Vested — — (1,000 ) 14.59 (167,248 ) 9.94 Outstanding at September 30, 2023 — — — — 377,549 $ 6.46 Granted — — — — 233,200 12.26 Forfeited — — — — (26,253 ) 6.47 Vested — — — — (175,601 ) 7.08 Outstanding at September 30, 2024 — $ — — $ — 408,895 $ 9.50

Note 16 - Income Taxes (Tables)

Note 16 - Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 United States $ (6,930 ) $ 11,190 Foreign 466 1,379 $ (6,464 ) $ 12,569
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Current Federal $ — $ 63 Foreign 55 244 State 41 59 96 366 Deferred: Federal — — Foreign 18 (3 ) 18 (3 ) $ 114 $ 363
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 YEAR ENDED SEPTEMBER 30, 2023 Amount Percent Amount Percent Expense (benefit) for U.S. federal income tax at statutory rate $ (1,357 ) 21.0 % $ 2,639 21.0 % Research and experimentation tax credit (572 ) 8.8 % (480 ) (3.9 )% State income taxes, net of federal income tax benefit 32 (0.5 )% 302 2.5 % Change in valuation allowance 1,934 (29.9 )% (2,459 ) (19.6 )% Foreign earnings tax 125 (1.9 )% — — Stock compensation (210 ) 3.2 % 171 1.4 % Impact due to foreign currency translation (44 ) 0.7 % 51 0.4 % Other items 206 (3.2 )% 139 1.1 % Total tax expense and effective tax rate $ 114 (1.8 )% $ 363 2.9 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Deferred income tax assets: Inventories $ 5,447 $ 8,269 Loss and tax credit carryforwards 31,850 29,581 Accrued compensation 733 870 R&D expenditure capitalization 3,064 1,538 Intangible assets 290 — Property and equipment 331 504 Other reserves 456 590 Subtotal deferred income tax assets 42,171 41,352 Valuation allowance (40,851 ) (38,917 ) Net deferred income tax assets 1,320 2,435 Deferred income tax liabilities: Intangible assets — (292 ) Property and equipment (1,249 ) (2,153 ) Other (105 ) (6 ) Total deferred income tax liabilities (1,354 ) (2,451 ) Net deferred income tax liabilities $ (34 ) $ (16 )

Note 17 - Income (Loss) Per C_2

Note 17 - Income (Loss) Per Common Share (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Net income (loss) $ (6,578 ) $ 12,206 Less: Income allocable to unvested restricted stock — — Income (loss) attributable to common shareholders for diluted earnings (loss) per share $ (6,578 ) $ 12,206 Weighted average number of common share equivalents: Common shares used in basic earnings (loss) per share 13,151,600 13,146,085 Common share equivalents outstanding related to RSUs — 68,981 Total weighted average common shares and common share equivalents used in diluted earnings (loss) per share 13,151,600 13,215,066 Earnings (loss) per share: Basic $ (0.50 ) $ 0.93 Diluted $ (0.50 ) $ 0.92

Note 19 - Supplemental Cash F_2

Note 19 - Supplemental Cash Flow Information (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Cash paid for income taxes $ 164 $ 151 Non-cash investing and financing activities: Inventory transferred to rental equipment 5,954 587 Note and accounts receivable related to sale of subsidiary 3,600 — Note receivable and accrued interest related to sale of rental equipment 9,496 — Account receivable related to sale of rental equipment 1,510 —

Note 20 - Segment Information (

Note 20 - Segment Information (Tables)	12 Months Ended
	Sep. 30, 2024
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Revenue: Oil and Gas Markets $ 77,455 $ 73,993 Adjacent Markets 55,625 49,039 Emerging Markets 2,222 1,234 Corporate 296 243 135,598 124,509 Income (loss) from operations: Oil and Gas Markets 13,134 15,759 Adjacent Markets 14,152 11,490 Emerging Markets (6,193 ) (4,003 ) Corporate (13,976 ) (11,918 ) 7,117 11,328 Depreciation and amortization expenses: Oil and Gas Markets 13,243 14,428 Adjacent Markets 860 703 Emerging Markets 275 565 Corporate 388 542 14,766 16,238 Impairment, inventory obsolescence and stock-based compensation expenses: Oil and Gas Markets 993 2,329 Adjacent Markets 221 656 Emerging Markets 2,798 52 Corporate 642 566 4,654 3,603 Interest income: Oil and Gas Markets 315 352 Adjacent Markets — — Emerging Markets — — Corporate 1,243 187 1,558 539 Interest expense: Oil and Gas Markets 17 105 Adjacent Markets — — Emerging Markets — — Corporate 170 29 187 134
Schedule of Revenue Generated by the Company's Subsidiaries [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 United States $ 127,488 $ 118,017 Canada 1,777 1,924 Russian Federation 3,487 1,850 United Kingdom 2,846 2,718 $ 135,598 $ 124,509
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	YEAR ENDED SEPTEMBER 30, 2024 2023 Asia (including Russian Federation) $ 51,103 $ 26,685 Canada 2,015 2,703 Europe 13,817 20,826 Mexico 1,959 1,792 South America 2,798 8,166 United States 63,061 62,611 Other 845 1,726 $ 135,598 $ 124,509
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]	AS OF SEPTEMBER 30, 2024 2023 United States $ 61,487 $ 75,321 Canada 414 575 Colombia 399 442 Russian Federation — 543 United Kingdom 528 383 $ 62,828 $ 77,264

Note 1 - Summary of Significa_3

Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Credit Terms for Trade Receivables (Day)	30 days
Extended Credit Terms for Trade Receivables (Day)	60 days
Revenues	$ 135,598	$ 124,509
Impairment of Intangible Assets, Finite-Lived	2,761	0
Emerging Markets [Member]
Impairment of Intangible Assets, Finite-Lived	2,800
Customer One [Member]
Accounts and Financing Receivable, after Allowance for Credit Loss	4,100	3,500
Customer Two [Member]
Accounts and Financing Receivable, after Allowance for Credit Loss	$ 9,500	$ 4,800
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer One [Member]
Concentration Risk, Percentage	27.40%	26.70%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Two [Member]
Concentration Risk, Percentage	16%	11.70%
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Certain Models of Oil and Gas Marine Wireless Products [Member]
Concentration Risk, Percentage	4%
Revenues	$ 0
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Thermal Film [Member]
Concentration Risk, Percentage	5%	5%
Subsidiaries [Member] | Non-US [Member]
Cash Equivalents, at Carrying Value	$ 1,100

Note 1 - Summary of Significa_4

Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment, Estimated Useful Life (Details)	Sep. 30, 2024
Rental Equipment [Member] | Minimum [Member]
Property, plant and equipment, useful lives (Year)	2 years
Rental Equipment [Member] | Maximum [Member]
Property, plant and equipment, useful lives (Year)	5 years
Machinery and Equipment [Member] | Minimum [Member]
Property, plant and equipment, useful lives (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, plant and equipment, useful lives (Year)	15 years
Building and Building Improvements [Member] | Minimum [Member]
Property, plant and equipment, useful lives (Year)	10 years
Building and Building Improvements [Member] | Maximum [Member]
Property, plant and equipment, useful lives (Year)	50 years
Property, Plant and Equipment, Other Types [Member] | Minimum [Member]
Property, plant and equipment, useful lives (Year)	5 years
Property, Plant and Equipment, Other Types [Member] | Maximum [Member]
Property, plant and equipment, useful lives (Year)	10 years

Note 1 - Summary of Significa_5

Note 1 - Summary of Significant Accounting Policies - Schedule of Estimated Lives of Intangible Assets (Details)	Sep. 30, 2024
Developed Technology Rights [Member]
Intangible assets, estimated useful lives (Year)	18 years
Trade Names [Member]
Intangible assets, estimated useful lives (Year)	5 years
Customer Relationships [Member]
Intangible assets, estimated useful lives (Year)	4 years
Noncompete Agreements [Member]
Intangible assets, estimated useful lives (Year)	4 years

Note 1 - Summary of Significa_6

Note 1 - Summary of Significant Accounting Policies - Changes in Product Warranty Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Balance	$ 658	$ 524
Accruals for warranties issued during the year	2,331	1,655
Settlements made (in cash or in kind) during the year	(1,738)	(1,521)
Balance	$ 1,251	$ 658

Note 2 - Revenue Recognition (D

Note 2 - Revenue Recognition (Details Textual) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Oct. 01, 2022
Contract with Customer, Liability, Current	$ 700	$ 0	$ 700	$ 0
Capitalized Contract Cost, Net, Current	0	0	0	0
Contract with Customer, Receivable, after Allowance for Credit Loss				$ 13,200
Contract with Customer, Liability, Revenue Recognized, Including Balance		700	0
Contract with Customer, Liability, Cost of Revenue Recognized	$ 0
Transferred over Time [Member]
Contract with Customer, Liability, Revenue Recognized		1,300	200
Shipping and Handling [Member]
Cost of Goods and Services Sold		$ 300	$ 500

Note 2 - Revenue Recognition -

Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer, Excluding Assessed Tax	$ 135,598	$ 124,509
Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	116,036	73,333
Operating Segments [Member] | Oil and Gas Markets [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	77,455	73,993
Operating Segments [Member] | Oil and Gas Markets [Member] | Traditional Exploration Product Revenue [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	9,666	12,081
Operating Segments [Member] | Oil and Gas Markets [Member] | Wireless Exploration Product Revenue [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	48,094	10,168
Operating Segments [Member] | Oil and Gas Markets [Member] | Reservoir Product Revenue [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	596	962
Operating Segments [Member] | Oil and Gas Markets [Member] | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	58,356	23,211
Operating Segments [Member] | Adjacent Markets [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	55,625	49,039
Operating Segments [Member] | Adjacent Markets [Member] | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	55,458	48,888
Operating Segments [Member] | Adjacent Markets [Member] | Industrial Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	43,058	36,859
Operating Segments [Member] | Adjacent Markets [Member] | Imaging Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	12,400	12,029
Operating Segments [Member] | Emerging Markets [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,222	1,234
Operating Segments [Member] | Emerging Markets [Member] | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,222	$ 1,234

Note 2 - Revenue Recognition _2

Note 2 - Revenue Recognition - Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer, Excluding Assessed Tax	$ 135,598	$ 124,509
Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	116,036	73,333
Asia [Member] | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	43,831	13,006
CANADA | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,578	1,032
Europe [Member] | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	6,430	5,976
MEXICO | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,959	1,792
South America [Member] | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	384	448
UNITED STATES | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	61,009	49,828
Other [Member] | Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 845	$ 1,251

Note 3 - Sale of Subsidiary (De

Note 3 - Sale of Subsidiary (Details Textual) - USD ($)		12 Months Ended
	Aug. 30, 2024	Sep. 30, 2024	Sep. 30, 2023
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		$ (14,539,000)	$ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax		(13,083,000)	0
Financing Receivable, Allowance for Credit Loss		900,000	$ 0
Discontinued Operations, Disposed of by Sale [Member] | Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member]
Disposal Group, Including Discontinued Operation, Consideration	$ 1,000,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	(13,100,000)
Accounts and Financing Receivable, after Allowance for Credit Loss		$ 3,600,000
Discontinued Operations, Disposed of by Sale [Member] | Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member] | Subsidiaries [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	(14,500,000)
Discontinued Operations, Disposed of by Sale [Member] | Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member] | Promissory Notes [Member]
Disposal Group, Including Discontinued Operation, Consideration	$ 3,500,000
Notes Receivable, Term (Year)	10 years
Notes Receivable, Interest Rate, Stated Percentage	5%
Notes Receivable, Periodic Payment	$ 37,000
Financing Receivable, Allowance for Credit Loss	$ 900,000

Note 4 - Short-term Investmen_3

Note 4 - Short-term Investments (Details Textual) Pure in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	0	0
Debt Securities, Realized Gain (Loss)	$ 0	$ 0
Debt Securities [Member] | Prepaid Expenses and Other Current Assets [Member]
Interest Receivable, Current	$ 300	$ 100

Note 4 - Short-term Investmen_4

Note 4 - Short-term Investments - Summary of Short-term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Investments, amortized cost	$ 30,170	$ 14,932
Investments, unrealized gains	57	4
Investments, unrealized losses	0	(15)
Investments, fair value	30,227	14,921
Corporate Debt Securities [Member]
Investments, amortized cost	21,814	11,310
Investments, unrealized gains	35	0
Investments, unrealized losses	0	(15)
Investments, fair value	21,849	11,295
US Treasury and Government Short-Term Debt Securities [Member]
Investments, amortized cost	8,356	3,622
Investments, unrealized gains	22	4
Investments, unrealized losses	0	0
Investments, fair value	$ 8,378	$ 3,626

Note 5 - Fair Value of Financ_3

Note 5 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2024	Aug. 30, 2024	Sep. 30, 2023
Financing Receivable, before Allowance for Credit Loss	$ 12,996		$ 1,216
Financing Receivable, Allowance for Credit Loss	$ 900		$ 0
Promissory Note [Member] | Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member] | Discontinued Operations, Disposed of by Sale [Member]
Financing Receivable, before Allowance for Credit Loss		$ 3,500
Financing Receivable, Allowance for Credit Loss		900
Promissory Note [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member] | Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member] | Discontinued Operations, Disposed of by Sale [Member]
Financing Receivable, before Allowance for Credit Loss		3,500
Financing Receivable, Allowance for Credit Loss		$ 900

Note 5 - Fair Value of Financ_4

Note 5 - Fair Value of Financial Instruments - Fair Value by Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Fair Value, Recurring [Member]
Short term investment	$ 30,227	$ 14,921
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Short term investment	0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Short term investment	30,227	14,921
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Short term investment	0	0
Fair Value, Nonrecurring [Member]
Note receivable on sale of subsidiary	2,600
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Note receivable on sale of subsidiary	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Note receivable on sale of subsidiary	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Note receivable on sale of subsidiary	2,600
Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Short term investment	21,849	11,295
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Short term investment	0	0
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Short term investment	21,849	11,295
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Short term investment	0	0
US Treasury and Government Short-Term Debt Securities [Member] | Fair Value, Recurring [Member]
Short term investment	8,378	3,626
US Treasury and Government Short-Term Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Short term investment		0
US Treasury and Government Short-Term Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Short term investment	$ 8,378	3,626
US Treasury and Government Short-Term Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Short term investment		$ 0

Note 6 - Accumulated Other Co_3

Note 6 - Accumulated Other Comprehensive Loss - Schedule of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Balance	$ 132,716	$ 121,647
Other comprehensive income (loss)	13,567	(2,511)
Balance	134,624	132,716
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(11)	(15)
Other comprehensive income (loss)	67	4
Balance	56	(11)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(17,813)	(15,298)
Other comprehensive income (loss)	13,500	(2,515)
Balance	(4,313)	(17,813)
AOCI Attributable to Parent [Member]
Balance	(17,824)	(15,313)
Other comprehensive income (loss)	13,567	(2,511)
Balance	$ (4,257)	$ (17,824)

Note 7 - Trade Accounts and N_3

Note 7 - Trade Accounts and Notes Receivable (Details Textual) - USD ($)	Aug. 30, 2024	Sep. 30, 2024	Aug. 31, 2024	Sep. 30, 2023
Accounts Receivable, after Allowance for Credit Loss, Noncurrent		$ 1,510,000		$ 0
Financing Receivable, before Allowance for Credit Loss		12,996,000		1,216,000
Financing Receivable, Allowance for Credit Loss		900,000		$ 0
Trade Accounts for Sale of Product [Member]
Accounts Receivable, after Allowance for Credit Loss, Noncurrent		$ 1,500,000
Promissory Note for Sale of Product [Member]
Financing Receivable, before Allowance for Credit Loss			$ 9,400,000
Notes Receivable, Interest Rate, Stated Percentage			9.50%
Notes Receivable, Periodic Payment			$ 900,000
Promissory Note [Member] | Discontinued Operations, Disposed of by Sale [Member] | Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member]
Financing Receivable, before Allowance for Credit Loss	$ 3,500,000
Notes Receivable, Interest Rate, Stated Percentage	5%
Notes Receivable, Periodic Payment	$ 37,000
Notes Receivable, Term (Year)	10 years
Financing Receivable, Allowance for Credit Loss	$ 900,000

Note 7 - Trade Accounts and N_4

Note 7 - Trade Accounts and Notes Receivable - Schedule of Trade Accounts and Notes Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Trade accounts receivable	$ 16,151	$ 20,282
Allowance for credit losses	(4)	(125)	$ (591)
Total	16,147	20,157
Less current portion	(14,637)	(20,157)
Accounts Receivable, after Allowance for Credit Loss, Noncurrent	$ 1,510	$ 0

Note 7 - Trade Accounts and N_5

Note 7 - Trade Accounts and Notes Receivable - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Beginning of period	$ 125	$ 591
Provision for credit losses	65	428
Recoveries	(175)	(566)
Write-offs	(11)	(303)
Currency translation	0	(25)
End of period	$ 4	$ 125

Note 7 - Trade Accounts and N_6

Note 7 - Trade Accounts and Notes Receivable - Schedule of Notes Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Notes receivable	$ 12,996	$ 1,216
Discount to fair value	900	0
Financing Receivable, after Allowance for Credit Loss	12,096	1,216
Less current portion	(7,231)	(1,216)
Non-current notes receivable	$ 4,865	$ 0

Note 8 - Inventories (Details T

Note 8 - Inventories (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Inventory Write-down	$ 589	$ 2,229
Inventory, Raw Materials, Gross	30,941	26,832
Semi-finished Goods and Component Parts [Member]
Inventory, Raw Materials, Gross	$ 8,600	$ 10,600

Note 8 - Inventories - Schedule

Note 8 - Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Finished goods	$ 18,099	$ 18,555
Work in process	3,626	11,992
Raw materials	30,941	26,832
Obsolescence reserve (net realizable value adjustment)	(8,413)	(14,061)
Inventory, Current and Noncurrent	44,253	43,318
Less current portion	26,222	18,430
Non-current portion	$ 18,031	$ 24,888

Note 9 - Leases (Details Textua

Note 9 - Leases (Details Textual) $ in Thousands	12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2021
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 135,598	$ 124,509
Number of Operating Right of Use Asset Related to Leased Facility	2
Accounts Receivable, after Allowance for Credit Loss, Current	$ 14,637	$ 20,157
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax
Equipment Expense	$ 10,800	$ 11,800
Lease Receivable [Member]
Accounts Receivable, after Allowance for Credit Loss, Current	1,000
Operating Lease, Lease Income	19,300	$ 51,000
Lessor, Operating Lease, Payment to be Received, Next Rolling 12 Months	15,200
Land [Member] | Calgary, Alberta, Canada [Member]
Lessor, Operating Lease, Term of Contract (Year)			5 years
Land and Building [Member] | Calgary, Alberta, Canada and Bogotá, Colombia [Member]
Number of Operating Right of Use Asset Related to Leased Facility		2
Operating Lease, Lease Income	$ 300	$ 200
Maximum [Member] | Equipment [Member]
Lessor, Operating Lease, Term of Contract (Year)	1 year

Note 9 - Leases - Maturities of

Note 9 - Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
2025	$ 186
2026	130
2027	134
2028	93
Future minimum lease payments	543
Less interest	(31)
Present value of minimum lease payments	512
Less current portion	(173)	$ (257)
Long-term portion	$ 339	$ 512

Note 9 - Leases - Lease Costs (

Note 9 - Leases - Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Right-of-use operating lease costs	$ 271	$ 272
Short-term lease costs	123	220
Total	$ 394	$ 492

Note 9 - Leases - Other Informa

Note 9 - Leases - Other Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating cash flows from operating leases	$ 278	$ 270
Weighted average remaining lease term (Year)	3 years 4 months 24 days	3 years 10 months 24 days
Weighted average discount rate	3.25%	3.25%

Note 9 - Leases - Rental Equipm

Note 9 - Leases - Rental Equipment (Details) - Equipment [Member] - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Rental equipment, primarily wireless recording equipment	$ 63,111	$ 82,926
Accumulated depreciation and impairment	(48,925)	(61,339)
Property, Plant, and Equipment, Lessor Asset under Operating Lease, after Accumulated Depreciation	$ 14,186	$ 21,587

Note 9 - Leases - Future Minimu

Note 9 - Leases - Future Minimum Lease Payment to be Received (Details) - Land [Member] - Calgary, Alberta, Canada [Member] $ in Thousands	Sep. 30, 2024 USD ($)
2025	$ 131
2026	132
2027	11
Lessor, Operating Lease, Payment to be Received	$ 274

Note 10 - Property, Plant and_3

Note 10 - Property, Plant and Equipment (Details Textual) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2023 USD ($)	Sep. 30, 2024 USD ($) a	Sep. 30, 2023 USD ($)
Asset, Held-for-Sale, Not Part of Disposal Group, Current		$ 1,841	$ 0
Proceeds from Sale of Property, Plant, and Equipment		9	4,406
Depreciation		$ 3,500	$ 3,700
Property Utilized for Parking [Member]
Area of Land (Acre) | a		17.3
Asset, Held-for-Sale, Not Part of Disposal Group, Current		$ 1,800
Satellite Property [Member]
Proceeds from Sale of Property, Plant, and Equipment	$ 3,700
Payment of Closing Costs for Sale of Property	300
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ 1,300

Note 10 - Property, Plant and_4

Note 10 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Property, plant and equipment, gross	$ 81,606	$ 86,068
Accumulated depreciation and impairment	(60,523)	(62,020)
Property, plant and equipment, net	21,083	24,048
Land and Land Improvements [Member]
Property, plant and equipment, gross	4,869	7,069
Building and Building Improvements [Member]
Property, plant and equipment, gross	21,312	21,931
Machinery and Equipment [Member]
Property, plant and equipment, gross	49,860	48,877
Furniture and Fixtures [Member]
Property, plant and equipment, gross	1,470	1,487
Tools, Dies and Molds [Member]
Property, plant and equipment, gross	3,628	3,287
Construction in Progress [Member]
Property, plant and equipment, gross	392	3,343
Transportation Equipment [Member]
Property, plant and equipment, gross	$ 75	$ 74

Note 11 - Goodwill and Other _3

Note 11 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Goodwill, Ending Balance	$ 736	$ 736
Finite-Lived Intangible Assets, Net	1,649	4,805
Impairment of Intangible Assets, Finite-Lived	2,761	0
Amortization of Intangible Assets	395	$ 768
Adjacent Markets [Member]
Goodwill, Ending Balance	700
Finite-Lived Intangible Assets, Net	500
Oil and Gas Markets [Member]
Finite-Lived Intangible Assets, Net	1,200
Impairment of Intangible Assets, Finite-Lived	$ 2,800

Note 11 - Goodwill and Other _4

Note 11 - Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Goodwill, gross	$ 5,072	$ 5,072
Goodwill, accumulated impairment losses	(4,336)	(4,336)
Goodwill	$ 736	736
Weighted average remaining useful life (Year)	2 years 3 months 18 days
Other intangible assets, gross	$ 8,383	12,583
Accumulated amortization	(6,734)	(7,778)
Finite-Lived Intangible Assets, Net	$ 1,649	4,805
Developed Technology Rights [Member]
Weighted average remaining useful life (Year)	4 years 6 months
Other intangible assets, gross	$ 2,275	6,475
Customer Relationships [Member]
Other intangible assets, gross	$ 3,900	3,900
Trade Names [Member]
Weighted average remaining useful life (Year)	1 month 6 days
Other intangible assets, gross	$ 2,022	2,022
Noncompete Agreements [Member]
Weighted average remaining useful life (Year)	1 month 6 days
Other intangible assets, gross	$ 186	186
Emerging Markets [Member]
Goodwill, gross	4,336	4,336
Adjacent Markets [Member]
Goodwill, gross	736	$ 736
Goodwill	700
Finite-Lived Intangible Assets, Net	$ 500

Note 11 - Goodwill and Other _5

Note 11 - Goodwill and Other Intangible Assets - Future Estimated Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
2025	$ 148
2026	140
2027	126
2028	126
2029	126
Thereafter	983
Finite-Lived Intangible Assets, Net	$ 1,649	$ 4,805

Note 12 - Long-term Debt (Detai

Note 12 - Long-term Debt (Details Textual) - USD ($) $ in Thousands	Jul. 26, 2023	Sep. 30, 2024	Sep. 30, 2023
Long-Term Debt		$ 0	$ 0
Line of Credit [Member] | Woodforest National Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 15,000
Line of Credit Facility, Borrowing Base as Percent of Certain Accounts Receivable	80%
Line of Credit Facility, Borrowing Base As Percent of Eligible Foreign Insured Accounts	90%
Line of Credit Facility, Borrowing Base as Percent of Eligible Inventory	25%
Line of Credit Facility, Borrowing Base as Percent of Forced Liquidation Value of Certain Inventory	50%
Debt Instrument, Basis Spread on Variable Rate	3.25%
Debt Instrument, Covenant, Minimum Consolidated Tangible Net Worth	$ 100,000
Debt Instrument, Covenant, Minimum Liquidity	$ 5,000
Line of Credit [Member] | Woodforest National Bank [Member] | Minimum [Member]
Current Ratio	2
Interest Coverage Ratio	1.5
Letter of Credit [Member] | Woodforest National Bank [Member]
Line of Credit Facility, Current Borrowing Capacity		14,900
Long-Term Line of Credit		$ 100
Debt Issuance Costs, Gross			$ 400

Note 13 - Other Current Liabi_3

Note 13 - Other Current Liabilities (Details Textual) $ in Millions	12 Months Ended
	Sep. 30, 2024 USD ($)
Minimum Amount Per Claimant On Which Company Purchased Stop Loss	$ 0.2

Note 13 - Other Current Liabi_4

Note 13 - Other Current Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Deferred revenue	$ 1,427	$ 4,368
Employee bonuses	1,050	1,665
Compensated absences	1,821	1,746
Payroll	426	940
Property and sales taxes	1,062	974
Legal and professional fees	355	616
Medical claims	538	641
Agent commissions	329	211
Product warranty	1,251	658	$ 524
Income taxes	17	117
Other	745	946
Other Liabilities, Current	$ 9,021	$ 12,882

Note 14 - Employee Benefits (De

Note 14 - Employee Benefits (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 1.1	$ 1.3

Note 15 - Stockholders' Equit_2

Note 15 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2019	Sep. 28, 2014
Share-Based Payment Arrangement, Expense	$ 1.3	$ 1.4
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	233,200	228,250
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 12.26	$ 4.7
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 1.9
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 3 months 18 days
The 2014 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)				3,000,000
Minimum Percent Of Outstanding Common Stock Granted To Employees	10%
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent	110%
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	827,088
The 2014 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	233,200	228,250
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 12.26	$ 4.7
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Grant Date Fair Value	$ 2.9	$ 1.1
The 2014 Plan [Member] | Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			0
The 2014 Plan [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	10 years
Options Award Expiry Period For Employees Owning Ten Percent Or More Shares (Year)	5 years
The 2014 Plan [Member] | Maximum [Member] | Restricted Stock Units (RSUs) [Member]
Restricted Stock Restriction Period (Year)	4 years
The 2014 Plan [Member] | Minimum [Member] | Restricted Stock Units (RSUs) [Member]
Restricted Stock Restriction Period (Year)	1 year

Note 15 - Stockholders' Equit_3

Note 15 - Stockholders' Equity - Summary of Combined Activity Under Equity Incentive Plans (Details) - $ / shares	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Outstanding, options (in shares)	0	0
Outstanding, weighted average exercise price (in dollars per share)	$ 0	$ 0
Forfeited, options (in shares)	0	0
Forfeited, weighted average exercise price (in dollars per share)	$ 0	$ 0
Outstanding, options (in shares)	0	0
Outstanding, weighted average exercise price (in dollars per share)	$ 0	$ 0
Restricted Stock [Member]
Outstanding, RSA (in shares)	0	1,000
Outstanding, weighted average grant date fair value per share (in dollars per share)	$ 0	$ 14.59
Forfeited, RSA (in shares)		0
Forfeited, weighted average grant date fair value per share (in dollars per share)		$ 0
Vested, RSA (in shares)	0	(1,000)
Vested, weighted average grant date fair value per share (in dollars per share)	$ 0	$ 14.59
Outstanding, RSA (in shares)	0	0
Outstanding, weighted average grant date fair value per share (in dollars per share)	$ 0	$ 0
Restricted Stock Units (RSUs) [Member]
Outstanding, RSA (in shares)	377,549	323,859
Outstanding, weighted average grant date fair value per share (in dollars per share)	$ 6.46	$ 9.54
Granted, RSU (in shares)	233,200	228,250
Granted, weighted average grant date fair value per unit (in dollars per share)	$ 12.26	$ 4.7
Forfeited, RSA (in shares)	(26,253)	(7,312)
Forfeited, weighted average grant date fair value per share (in dollars per share)	$ 6.47	$ 8.44
Vested, RSA (in shares)	(175,601)	(167,248)
Vested, weighted average grant date fair value per share (in dollars per share)	$ 7.08	$ 9.94
Outstanding, RSA (in shares)	408,895	377,549
Outstanding, weighted average grant date fair value per share (in dollars per share)	$ 9.5	$ 6.46

Note 16 - Income Taxes (Details

Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash and Cash Equivalents, at Carrying Value	$ 6,895	$ 18,803
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	1,200	8,200
Domestic Tax Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance	$ 40,851
Foreign Tax Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance		38,917
Internal Revenue Service (IRS) [Member] | Domestic Tax Jurisdiction [Member]
Open Tax Year	2017 2018 2019 2020 2021 2022 2023 2024
Operating Loss Carryforwards	$ 85,600
Operating Loss Carryforwards, Subject to Expiration	32,400
Operating Loss Carryforwards, Not Subject to Expiration	53,200
Deferred Tax Assets, Valuation Allowance	$ 36,100	33,700
His Majesty's Revenue and Customs (HMRC) [Member] | Foreign Tax Jurisdiction [Member]
Open Tax Year	2023 2024
Canada Revenue Agency [Member] | Foreign Tax Jurisdiction [Member]
Open Tax Year	2022 2021 2022 2023 2024
Operating Loss Carryforwards	$ 19,200
Deferred Tax Assets, Valuation Allowance	4,800	4,800
The Federal Taxation Service [Member] | Foreign Tax Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance		$ 400
Non-US [Member]
Cash and Cash Equivalents, at Carrying Value	$ 1,100

Note 16 - Income Taxes - Compon

Note 16 - Income Taxes - Components of Loss Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
United States	$ (6,930)	$ 11,190
Foreign	466	1,379
Income (loss) before income taxes	$ (6,464)	$ 12,569

Note 16 - Income Taxes - Comput

Note 16 - Income Taxes - Computation of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Current
Federal	$ 0	$ 63
Foreign	55	244
State	41	59
Current Income Tax Expense (Benefit)	96	366
Deferred:
Federal	0	0
Foreign	18	(3)
Deferred Income Tax Expense (Benefit)	18	(3)
Income Tax Expense (Benefit)	$ 114	$ 363

Note 16 - Income Taxes - Reconc

Note 16 - Income Taxes - Reconciliation of Actual Income Tax Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Expense (benefit) for U.S. federal income tax at statutory rate	$ (1,357)	$ 2,639
Expense (benefit) for U.S. federal income tax at statutory rate, percentage	21%	21%
Research and experimentation tax credit	$ (572)	$ (480)
Research and experimentation tax credit	8.80%	(3.90%)
State income taxes, net of federal income tax benefit	$ 32	$ 302
State income taxes, net of federal income tax benefit, percentage	(0.50%)	2.50%
Change in valuation allowance	$ 1,934	$ (2,459)
Change in valuation allowance, percentage	(29.90%)	(19.60%)
Foreign earnings tax	$ 125	$ 0
Foreign earnings tax, percentage	(1.90%)	0%
Stock compensation	$ (210)	$ 171
Stock compensation, percentage	3.20%	1.40%
Impact due to foreign currency translation	$ (44)	$ 51
Impact due to foreign currency translation	0.70%	0.40%
Other items	$ 206	$ 139
Other items, percentage	(3.20%)	1.10%
Income Tax Expense (Benefit)	$ 114	$ 363
Total tax expense and effective tax rate, percentage	(1.80%)	2.90%

Note 16 - Income Taxes - Comp_2

Note 16 - Income Taxes - Components of Net Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Deferred income tax assets:
Accrued compensation	$ 733	$ 870
R&D expenditure capitalization	3,064	1,538
Intangible assets	0	(292)
Property and equipment	(1,249)	(2,153)
Other	(105)	(6)
Domestic Tax Jurisdiction [Member]
Deferred income tax assets:
Inventories	5,447
Loss and tax credit carryforwards	31,850
Intangible assets	290
Property and equipment	331
Other reserves	456
Subtotal deferred income tax assets	42,171
Valuation allowance	(40,851)
Net deferred income tax assets	1,320
Total deferred income tax liabilities	(1,354)
Net deferred income tax liabilities	$ (34)
Foreign Tax Jurisdiction [Member]
Deferred income tax assets:
Inventories		8,269
Loss and tax credit carryforwards		29,581
Intangible assets		0
Property and equipment		504
Other reserves		590
Subtotal deferred income tax assets		41,352
Valuation allowance		(38,917)
Net deferred income tax assets		2,435
Total deferred income tax liabilities		(2,451)
Net deferred income tax liabilities		$ (16)

Note 17 - Income (Loss) Per C_3

Note 17 - Income (Loss) Per Common Share (Details Textual) - shares	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	408,895	308,568

Note 17 - Income (Loss) Per C_4

Note 17 - Income (Loss) Per Common Share - Computation of Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Net income (loss)	$ (6,578)	$ 12,206
Less: Income allocable to unvested restricted stock	0	0
Income (loss) attributable to common shareholders for diluted earnings (loss) per share	$ (6,578)	$ 12,206
Common shares used in basic earnings (loss) per share (in shares)	13,151,600	13,146,085
Common share equivalents outstanding related to RSUs (in shares)	0	68,981
Total weighted average common shares and common share equivalents used in diluted earnings (loss) per share (in shares)	13,151,600	13,215,066
Basic (in dollars per share)	$ (0.5)	$ 0.93
Diluted (in dollars per share)	$ (0.5)	$ 0.92

Note 18 - Commitments and Con_2

Note 18 - Commitments and Contingencies (Details Textual) - Aquana, LLC [Member] - USD ($)	1 Months Ended
	Jul. 31, 2021	Sep. 30, 2024	Sep. 30, 2023
Business Combination, Contingent Consideration, Earn Out Period (Year)	6 years
Business Combination, Required Continued Employment of Key Employees, Period (Year)	4 years
Business Combination, Contingent Consideration, Liability		$ 17,000	$ 0

Note 19 - Supplemental Cash F_3

Note 19 - Supplemental Cash Flow Information - Supplemental Cash Flow Information Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash paid for income taxes	$ 164	$ 151
Non-cash investing and financing activities:
Inventory transferred to rental equipment	5,954	587
Note and accounts receivable related to sale of subsidiary	3,600	0
Note receivable and accrued interest related to sale of rental equipment	9,496	0
Account receivable related to sale of rental equipment	$ 1,510	$ 0

Note 20 - Segment Information_2

Note 20 - Segment Information (Details Textual)	12 Months Ended
	Sep. 30, 2024
Number of Operating Segments	3

Note 20 - Segment and Geographi

Note 20 - Segment and Geographic Information - Summary of Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenue	$ 135,598	$ 124,509
Income (loss) from operations	7,117	11,328
Depreciation and amortization	14,766	16,238
Impairment, inventory obsolescence and stock-based compensation expenses	4,654	3,603
Interest income	1,558	539
Interest expense	187	134
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue	296	243
Income (loss) from operations	(13,976)	(11,918)
Depreciation and amortization	388	542
Impairment, inventory obsolescence and stock-based compensation expenses	642	566
Interest income	1,243	187
Interest expense	170	29
Oil and Gas Markets [Member] | Operating Segments [Member]
Revenue	77,455	73,993
Income (loss) from operations	13,134	15,759
Depreciation and amortization	13,243	14,428
Impairment, inventory obsolescence and stock-based compensation expenses	993	2,329
Interest income	315	352
Interest expense	17	105
Adjacent Markets [Member] | Operating Segments [Member]
Revenue	55,625	49,039
Income (loss) from operations	14,152	11,490
Depreciation and amortization	860	703
Impairment, inventory obsolescence and stock-based compensation expenses	221	656
Interest income	0	0
Interest expense	0	0
Emerging Markets [Member] | Operating Segments [Member]
Revenue	2,222	1,234
Income (loss) from operations	(6,193)	(4,003)
Depreciation and amortization	275	565
Impairment, inventory obsolescence and stock-based compensation expenses	2,798	52
Interest income	0	0
Interest expense	$ 0	$ 0

Note 20 - Segment and Geograp_2

Note 20 - Segment and Geographic Information - Schedule of Revenue Generated by the Company's Subsidiaries (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenues	$ 135,598	$ 124,509
United States Subsidiary [Member]
Revenues	127,488	118,017
Canada Subsidiary [Member]
Revenues	1,777	1,924
Russian Federation Subsidiary [Member]
Revenues	3,487	1,850
United Kingdom Subsidiary [Member]
Revenues	$ 2,846	$ 2,718

Note 20 - Segment and Geograp_3

Note 20 - Segment and Geographic Information - Summary of Revenue by Geographic Area (Details) - USD ($)	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenues	$ 135,598,000	$ 124,509,000
Asia [Member]
Revenues	51,103,000	26,685,000
CANADA
Revenues	2,015,000	2,703,000
Europe [Member]
Revenues	13,817,000	20,826,000
MEXICO
Revenues	1,959	1,792
South America [Member]
Revenues	2,798,000	8,166,000
UNITED STATES
Revenues	63,061,000	62,611,000
Other [Member]
Revenues	$ 845,000	$ 1,726,000

Note 20 - Segment and Geograp_4

Note 20 - Segment and Geographical Information - Long Lived Assets by Location (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Long lived assets	$ 62,828	$ 77,264
UNITED STATES
Long lived assets	61,487	75,321
CANADA
Long lived assets	414	575
COLOMBIA
Long lived assets	399	442
RUSSIAN FEDERATION
Long lived assets	0	543
UNITED KINGDOM
Long lived assets	$ 528	$ 383