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Note 11 - Derivative Financial Instruments - Gain (Loss) Recognized in Comprehensive Income on Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Unrealized gain (loss) $ 363 $ 774
Interest Rate Swap [Member]    
Unrealized gain (loss) 397 286
Foreign Exchange Contract [Member]    
Unrealized gain (loss) $ (34) $ 488