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v3.23.2

Note 16 - Risks and Uncertainties (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) $ / item | Jun. 30, 2022 USD ($) | Sep. 30, 2022 USD ($)
Revenue from Contract with Customer, Excluding Assessed Tax | $ 32,715 | $ 20,691 | $ 95,194 | $ 63,382 |
Oil and Gas, Average Sale Price (in USD per Per Share) | $ / item |  |  | 65 |  |
Geospace Technologies Eurasia LLC (GTE) [Member] |  |  |  |  |
Imported Product for Resale |  |  | $ 3,200 |  | $ 1,900
Equity, Attributable to Noncontrolling Interest | 6,200 |  | 6,200 |  |
Cash | $ 2,100 |  | 2,100 |  |
Geospace Technologies Eurasia LLC (GTE) [Member] | Geographic Distribution, Domestic [Member] |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  | 1,600 |  | $ 1,900
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |  |  |
Number of Major Customers | 2 |  |  |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member] |  |  |  |  |
Accounts and Financing Receivable, after Allowance for Credit Loss | $ 5,900 |  | 5,900 |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member] |  |  |  |  |
Accounts and Financing Receivable, after Allowance for Credit Loss | $ 4,700 |  | $ 4,700 |  |
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] |  |  |  |  |
Number of Major Customers | 2 |  | 2 |  |
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer One [Member] |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 8,000 |  | $ 25,900 |  |
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Two [Member] |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 3,700 |  | $ 9,300 |  |

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