Note L - Derivatives and Hedging (Details Textual) $ in Thousands, € in Millions, SFr in Millions		12 Months Ended
	Aug. 18, 2021 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 EUR (€)	Jun. 30, 2024 CHF (SFr)	Aug. 23, 2021
Deferred Tax Assets, Derivative Instruments		$ 0	$ 56
Derivative, Fixed Interest Rate	2.40%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	Secured Overnight Financing Rate (SOFR) [Member]
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%
Cash Flow Hedging [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax		800	500
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Interest Income, Effective Portion, Net		400	3,100
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount		11,900			SFr 10.5
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount		34,000		€ 30.8
Accumulated Other Comprehensive Income (Loss) Cumulative Cash Flow Hedges, Gain (Loss)		200	200
Deferred Tax Assets, Derivative Instruments		100	$ 100
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months		$ 200
Interest Rate Swap [Member]
Derivative, Fixed Interest Rate	2.40%					2.40%