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v3.23.3

Note 1 - Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Restricted Cash | $ 200 | $ 200
Credit Terms for Trade Receivables (Day) | 30 days |
Extended Credit Terms for Trade Receivables (Day) | 60 days |
Revenues | $ 124,509 | 89,253
Emerging Markets [Member] |  |
Impairment, Long-Lived Asset, Held-for-Use | 0 |
Geospace Technologies Eurasia LLC [Member] |  |
Net Carrying Value of Subsidiary | 5,800 |
Imported Product for Resale | 3,800 |
Geospace Technologies Eurasia LLC [Member] | Geographic Distribution, Domestic [Member] |  |
Revenues | 1,800 |
Customer One [Member] |  |
Accounts and Financing Receivable, after Allowance for Credit Loss | 3,500 | $ 5,500
Customer Two [Member] |  |
Accounts and Financing Receivable, after Allowance for Credit Loss | $ 4,800 |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer One [Member] |  |
Concentration Risk, Percentage | 26.70% | 29.30%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Two [Member] |  |
Concentration Risk, Percentage | 11.70% |
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Certain Models of Oil and Gas Marine Wireless Products [Member] |  |
Concentration Risk, Percentage | 4.00% | 11.00%
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Thermal Film [Member] |  |
Concentration Risk, Percentage | 5.00% | 8.00%
Minimum [Member] |  |
Cash, Uninsured Amount | $ 5,000 |
Subsidiaries [Member] | Non-US [Member] |  |
Cash Equivalents, at Carrying Value | 3,800 |
Subsidiaries [Member] | RUSSIAN FEDERATION |  |
Cash Equivalents, at Carrying Value | $ 2,500 |

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