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Foreign Exchange Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Jun. 30, 2016
Foreign currency forward contracts $ 0   $ 0   $ 0
Other expense, net          
Foreign currency transactions gain (loss) (44) $ (116) 40 $ 316  
Other expense, net | Foreign contracts          
Foreign currency transactions gain (loss) $ 225 $ 117 $ (942) $ (2,186)  
Maximum          
Length of forward contracts     3 months