Foreign Exchange Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Foreign currency forward contracts	$ 0	$ 0
Other expense, net
Foreign currency transactions gain (loss)	55	2,141	$ (1,196)
Other expense, net | Foreign contracts
Foreign currency transactions gain (loss)	$ (1,322)	$ (4,155)	$ (1,355)
Maximum
Length of forward contracts	3 months