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v3.22.2.2

Note 2 - Basis of Presentation and Significant Accounting Policies (Details Textual) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Number of Wholly Owned Subsidiaries | 8 |  |
Number of Additional Inactive Subsidiaries | 2 |  |
Number Of Major Customers | 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 | $ 12,736 | $ 13,167 |
Restricted Cash, Total | 923 | 1,361 |
Deferred Revenue for Collection Issues | 0 | 0 |
Accounts Receivable, Allowance for Credit Loss, Ending Balance | 181 | 127 |
Inventory Obsolescence Write Down (Recoveries) | (105) | (183) |
Cost of Revenue, Total | 27,693 | 23,577 |
Advertising Expense | 677 | 193 |
Standard and Extended Product Warranty Accrual, Ending Balance | 159 | 146 | $ 126
Impairment of Intangible Assets, Finite-Lived | $ 0 | 0 |
Number of Reportable Segments | 2 |  |
Foreign Currency Transaction Gain (Loss), before Tax, Total | $ (704) | 260 |
Shipping and Handling [Member] |  |  |
Cost of Revenue, Total | $ 836 | $ 266 |
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 | 2 |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer 1 [Member] |  |  |
Concentration Risk, Percentage | 43.00% | 66.00% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer 2 [Member] |  |  |
Concentration Risk, Percentage | 19.00% | 18.00% |

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