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v3.24.3

Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Credit Terms for Trade Receivables (Day) | 30 days |
Extended Credit Terms for Trade Receivables (Day) | 60 days |
Revenues | $ 135,598 | $ 124,509
Impairment of Intangible Assets, Finite-Lived | 2,761 | 0
Emerging Markets [Member] |  |
Impairment of Intangible Assets, Finite-Lived | 2,800 |
Customer One [Member] |  |
Accounts and Financing Receivable, after Allowance for Credit Loss | 4,100 | 3,500
Customer Two [Member] |  |
Accounts and Financing Receivable, after Allowance for Credit Loss | $ 9,500 | $ 4,800
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer One [Member] |  |
Concentration Risk, Percentage | 27.40% | 26.70%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Two [Member] |  |
Concentration Risk, Percentage | 16.00% | 11.70%
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Certain Models of Oil and Gas Marine Wireless Products [Member] |  |
Concentration Risk, Percentage | 4.00% |
Revenues | $ 0 |
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Thermal Film [Member] |  |
Concentration Risk, Percentage | 5.00% | 5.00%
Subsidiaries [Member] | Non-US [Member] |  |
Cash Equivalents, at Carrying Value | $ 1,100 |

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