CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - 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 (loss)	$ 1,192	$ (2,572)	$ 5,679	$ 2,839
Other comprehensive income (loss), net of tax:
Unrealized losses on derivative instruments designated as cash flow hedges	(1,245)	(9,117)	(5,575)	(11,700)
Losses (gains) on derivative instruments designated as cash flow hedges reclassified to cost of goods sold	2,677	375	11,504	(9,467)
Total comprehensive income (loss), net of tax	$ 2,624	$ (11,314)	$ 11,608	$ (18,328)