CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 18,577	$ 16,696	$ 67,508	$ 49,876
Change in fair value of derivative instruments	4,316	(2,624)	1,322	(3,347)
Foreign currency translation adjustment	4,935	(16,673)	(14,780)	(34,011)
Unrecognized net pension gains (losses)	446	351	1,338	1,053
(Provision) benefit for income taxes	(1,828)	2,729	487	5,435
Other comprehensive income (loss)	7,869	(16,217)	(11,633)	(30,870)
Comprehensive income (loss)	$ 26,446	$ 479	$ 55,875	$ 19,006