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Note 11 - Derivative Financial Instruments (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2019
Mar. 31, 2019
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) $ (3,700) $ (3,700) $ (2,900)
Foreign Exchange Forward [Member]      
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax 400 400  
Derivative Instruments in Hedges, at Fair Value, Net, Total $ 120,000 $ 120,000