Note K - Derivatives and Hedging (Details Textual) € in Millions	3 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 EUR (€)	Jun. 30, 2019 USD ($)
Unrealized Gain on Foreign Currency Derivatives, before Tax	$ 1,500,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value	3,100,000
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	1,300,000
Prepaid Expenses and Other Current Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value				$ 2,000,000
Other Noncurrent Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value				$ 312,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	1,500,000
Cash Flow Hedging [Member]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax		$ 458,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net, Total	750,000	$ 41,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Other Income, Effective Portion, Net	$ 54,000
Foreign Exchange Contract [Member]
Discontinuation of Cash Flow Hedge	0	0
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount	$ 30,400,000		€ 24.8