Note J - Derivatives and Hedging (Details Textual) € in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 EUR (€)	Jun. 30, 2016 USD ($)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	$ 92,000	$ 0	$ 92,000	$ 0
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	1,500,000		1,500,000
Cash Flow Hedging [Member]
Derivative Instruments, Gain Recognized in Other Comprehensive Income (Loss), Effective Portion	2,300,000	424,000	1,800,000	482,000
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion	213,000	$ 45,000	271,000	$ 7,000
Prepaid Expenses and Other Current Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	2,000,000		2,000,000			$ 226,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	1,300,000		1,300,000
Cash Flow Hedging Foreign Exchange Contract [Member]
Derivative, Notional Amount	$ 35,200,000		$ 35,200,000		€ 31.1