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Note A - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Sales, Royalty and Licensing Revenue | $ 1,700,000 | $ 2,500,000 |  |
Royalty Expense | $ 66,000 | $ 92,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 0 | 0 |  |
Share-Based Payment Arrangement, Expense | $ 200,000 | $ 300,000 |  |
Deferred Compensation Arrangement with Individual, Cash Award Forfeited, Amount | 0 | $ 0 |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  |  | $ 0 | $ 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net |  |  | 0 | $ 0
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Value, Net Asset (Liability) | 0 |  | 0 |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Value, Net Asset (Liability) | (1,056,000) |  | (1,599,000) |
Fair Value, Inputs, Level 2 [Member] | Line of Credit [Member] |  |  |  |
Debt Instrument, Fair Value Disclosure | 2,500,000 |  | 1,900,000 |
Fair Value, Inputs, Level 2 [Member] | Term Loan [Member] |  |  |  |
Debt Instrument, Fair Value Disclosure | 8,900,000 |  | 8,900,000 |
Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Value, Net Asset (Liability) | $ 0 |  | $ 0 |
The 2020 Omnibus Stock Incentive Plan [Member] | Scenario, Plan [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Plan Term Extension (Year) | 5 years |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) | 550,000 |  |  |
Restricted Stock [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 170,724 | 279,792 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 0 | 0 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares) | 0 | 0 |  |

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