CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 5,561	$ 2,896	$ 4,487	$ 5,411
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on derivative instruments designated as cash flow hedges	310	(5,915)	(4,330)	(2,583)
Losses (gains) on derivative instruments designated as cash flow hedges reclassified to cost of goods sold	3,859	(5,132)	8,827	(9,842)
Total comprehensive income (loss), net of tax	$ 9,730	$ (8,151)	$ 8,984	$ (7,014)