Note 10 - Derivative Financial Instruments (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
	Mar. 31, 2016	Mar. 31, 2016	Jun. 30, 2015
Interest Rate Swap [Member]
Derivative, Notional Amount	$ 50,000,000	$ 50,000,000
Derivative, Average Fixed Interest Rate	1.43%	1.43%
Foreign Exchange Contract [Member]
Outstanding forward contracts, net unrealized gain loss.	$ (200,000)	$ (200,000)	$ 700,000
Derivative Instruments, Loss Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing	$ 0	$ 0