Note K - Derivatives and Hedging (Details Textual) € in Millions	12 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 EUR (€)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	$ 189,000	$ 0
Accumulated Other Comprehensive Income (Loss) Cumulative Cash Flow Hedges, Gain (Loss)	646,000	149,000
Deferred Tax Assets, Derivative Instruments	232,000
Deferred Tax Liabilities, Derivatives		54,000
Cash Flow Hedging [Member]
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion	685,000	74,000
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion	(110,000)	$ (414,000)
Prepaid Expenses and Other Current Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	422,000
Other Noncurrent Assets [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	99,000
Reclassification out of Accumulated Other Comprehensive Income [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	(541,000)
Cash Flow Hedging Foreign Exchange Contract [Member]
Derivative, Notional Amount	$ 26,100,000		€ 23.1