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v3.23.3

Note 2 - Basis of Presentation and Significant Accounting Policies (Details Textual) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($)
Number of Wholly Owned Subsidiaries | 8 |  |
Number of Additional Inactive Subsidiaries | 2 |  |
Investments, Typical Final Maturity Maximum (Year) | 3 years |  |
Investments, Typical Portfolio Weighted Average Maturity (Month) | 18 months |  |
Cash and Cash Equivalents, at Carrying Value, Total | $ 8,665 | $ 12,736 |
Restricted Cash, Total | 854 | 923 |
Deferred Revenue for Collection Issues | 0 | 0 |
Accounts Receivable, Allowance for Credit Loss, Ending Balance | 66 | 181 |
Inventory Obsolescence Write Down (Recoveries) | 319 | 295 |
Inventory Obsolescence Write Down (Recoveries) | (319) | (295) |
Cost of Revenue | 24,901 | 26,759 |
Advertising Expense | 512 | 677 |
Standard and Extended Product Warranty Accrual | $ 132 | 159 | $ 146
Number of Reportable Segments | 2 |  |
Gain (Loss), Foreign Currency Transaction, before Tax | $ 207 | 704 |
Shipping and Handling [Member] |  |  |
Cost of Revenue | $ 392 | $ 836 |
Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 2 years |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 3 years |  |
Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 7 years |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |
Number Of Major Customers | 3 |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer 1 [Member] |  |  |
Concentration Risk, Percentage | 22.00% | 43.00% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer 2 [Member] |  |  |
Concentration Risk, Percentage | 10.00% | 19.00% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer 3 [Member] |  |  |
Concentration Risk, Percentage | 10.00% |  |

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