Note K - Derivatives and Hedging (Details Textual) $ in Thousands, € in Millions, SFr in Millions			3 Months Ended		9 Months Ended
	May 11, 2026 USD ($)	Aug. 18, 2021 USD ($)	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2026 EUR (€)	Mar. 31, 2026 CHF (SFr)
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%
Derivative, Fixed Interest Rate		2.40%
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Accumulated Other Comprehensive Income (Loss) Cumulative Cash Flow Hedges, Gain (Loss)			$ 100		$ 100
Deferred Tax Assets, Derivative Instruments			400		400
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Subsequent Event [Member]
Gain (Loss) on Sale of Derivatives	$ 200
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	0	$ 0
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings			0	$ 0	0	$ 0
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount			11,300		11,300			SFr 8.7
Foreign Exchange Contract Euro Sales [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount			12,100		12,100		€ 10.4
Foreign Exchange Contract Swiss Franc Sales [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount			$ 3,300		$ 3,300			SFr 2.6