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Note K - Derivatives and Hedging (Details Textual) € in Millions, SFr in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2021 EUR (€)	Mar. 31, 2021 CHF (SFr)	Jun. 30, 2020 USD ($)
Accumulated Other Comprehensive Income (Loss) Cumulative Cash Flow Hedges, Gain (Loss)	$ 500,000		$ 500,000
Derivative Liability, Current	954,000		954,000
Prepaid Expenses and Other Current Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	800,000		800,000
Other Noncurrent Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	84,000		84,000
Other Current Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value							500,000
Other Noncurrent Liabilities [Member]
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value							$ 200,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	500,000		500,000
Cash Flow Hedging [Member]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(1,600,000)	$ 1,000,000	(2,300,000)	$ 1,900,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Interest Income, Effective Portion, Net	(900,000)	$ 500,000	(2,200,000)	2,100,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net, Total				$ 54,000
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount	6,000,000		6,000,000			SFr 5.5
Derivative Liability, Current	100,000		100,000
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount	$ 52,500,000		$ 52,500,000		€ 45.2

X

- Definition

Accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges recorded to Accumulated Other Comprehensive Income Loss.

+ References

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Fair value of all asset derivatives designated as cash flow hedging instruments.

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Fair value of all liability derivatives designated as cash flow hedging instruments.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Nominal or face amount used to calculate payment on derivative.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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