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Note G - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Federal, State and Local Income Tax Expense (Benefit), Gross, Continuing Operations | $ 2,200 | $ 800
Foreign Income Tax Expense (Benefit), Continuing Operations |  | $ 200
Tax Credit Carryforward, Amount | $ 800 |
Effective Income Tax Rate Reconciliation, Percent | (23.70%) | 29.10%
Dividends and Interest Paid | $ 5,400 | $ 14,700
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 0 |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00%
Fiscal Years After June 30, 2021 [Member] |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |
Domestic Tax Jurisdiction [Member] |  |
Operating Loss Carryforwards | $ 4,600 |
State and Local Jurisdiction [Member] |  |
Operating Loss Carryforwards | 6,600 |
Foreign Tax Jurisdiction [Member] |  |
Operating Loss Carryforwards | $ 300 |
Foreign Tax Jurisdiction [Member] | Swiss Federal Tax Administration (FTA) [Member] |  |
Effective Income Tax Rate Reconciliation, Percent | 1.00% |
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent | 5.00% |
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount | $ 300 | $ 700

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