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%