CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (10,100)	$ (17,060)	$ (13,086)	$ (16,220)
Other comprehensive (loss) income, net of tax:
Unrealized gains (losses) on derivative instruments designated as cash flow hedges, net of tax	748	(1,279)	(5,349)	(1,707)
Losses (gains) on derivative instruments designated as cash flow hedges reclassified to cost of goods sold, net of tax	1,650	64	3,110	(708)
Change in funded status of retiree benefit obligations, net of tax	(5,651)	0	(5,651)	0
Pension settlement charge, net of tax	8,147	0	8,147	0
Total comprehensive loss, net of tax	$ (5,206)	$ (18,275)	$ (12,829)	$ (18,635)