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Note K - Derivatives and Hedging (Details Textual) $ in Thousands, € in Millions, SFr in Millions |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 18, 2021 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 EUR (€) | Sep. 30, 2025 CHF (SFr) | Aug. 23, 2021
Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | Term Loan [Member] |  |  |  |  |  |
Debt Instrument, Face Amount | $ 10,000 |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.80% |  |  |  |  |
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) Cumulative Cash Flow Hedges, Gain (Loss) |  | $ (900) |  |  |  |
Deferred Tax Assets, Derivative Instruments |  | 400 |  |  |  |
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net |  | 0 | $ 0 |  |  |
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings |  | 0 | $ 0 |  |  |
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative, Notional Amount |  | 11,700 |  |  | SFr 9.3 |
Foreign Exchange Contract Euro Sales [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |
Derivative, Notional Amount |  | 28,100 |  | € 24.5 |  |
Foreign Exchange Contract Swiss Franc Sales [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |
Derivative, Notional Amount |  | $ 6,800 |  |  | SFr 5.4 |
Interest Rate Swap [Member] |  |  |  |  |  |
Derivative, Fixed Interest Rate |  |  |  |  |  | 2.40%

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