Note J - Derivatives and Hedging (Details Textual) € in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 EUR (€)	Jun. 30, 2016 USD ($)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	$ 97,000	$ 0	$ 189,000	$ 0
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	776,000		776,000
Cash Flow Hedging [Member]
Derivative Instruments, Gain Recognized in Other Comprehensive Income (Loss), Effective Portion	322,000	118,000	1,500,000	125,000
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion	278,000	$ 2,000	549,000	$ 53,000
Prepaid Expenses and Other Current Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	1,100,000		1,100,000			$ 226,000
Cash Flow Hedging Foreign Exchange Contract [Member]
Derivative, Notional Amount	$ 23,100,000		$ 23,100,000		€ 20.4