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Note 11 - Derivative Financial Instruments (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2018
Jun. 30, 2018
Derivative Instruments, Loss Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing $ 0 $ 0  
Interest Rate Swap [Member]      
Derivative, Notional Amount $ 85,000 $ 85,000  
Derivative, Average Fixed Interest Rate 2.11% 2.11%  
Foreign Exchange Contract [Member]      
Outstanding Forward Contracts, Net Unrealized Gain (Loss) $ (5,900) $ (5,900) $ (2,900)