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Note 1 - Significant Accounting Policies (Details Textual) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Sep. 30, 2024 USD ($)
Cash and Cash Equivalents, at Carrying Value | $ 1,410 |  | $ 6,895
Credit Terms for Trade Receivables (Day) | 30 days |  |
Extended Credit Terms for Trade Receivables (Day) | 60 days |  |
Customer One [Member] |  |  |
Accounts and Financing Receivable, after Allowance for Credit Loss | $ 22,500 |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 18,700 | $ 31,700 |
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |
Number of Major Customers | 1 |  |
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] |  |  |
Number of Major Customers | 1 |  |
Subsidiaries [Member] | Non-US [Member] |  |  |
Cash and Cash Equivalents, at Carrying Value | $ 900 |  | $ 1,100

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