Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Consolidated Statements of Comprehensive Income
Net sales	$ 1,497,615,000	$ 1,355,877,000	$ 901,608,000
Cost of sales	1,173,120,000	952,877,000	583,960,000
Gross profit	324,495,000	403,000,000	317,648,000
Selling, general and administrative expenses	267,089,000	219,066,000	136,846,000
Goodwill impairment charge	263,771,000
(Loss) income from operations	(206,365,000)	183,934,000	180,802,000
Interest expense, net	(37,092,000)	(29,225,000)	(25,178,000)
Other income, net	1,841,000	2,199,000	2,003,000
(Loss) income before income taxes	(241,616,000)	156,908,000	157,627,000
Benefit (provision) for income taxes	86,872,000	(54,806,000)	(52,815,000)
Net (loss) income	(154,744,000)	102,102,000	104,812,000
Other comprehensive loss, net of income taxes	(27,899,000)	(633,000)	(4,459,000)
Comprehensive (loss) income	$ (182,643,000)	$ 101,469,000	$ 100,353,000
Net (loss) income per share:
Basic (in dollars per share)	$ (1.60)	$ 1.06	$ 1.12
Diluted (in dollars per share)	$ (1.60)	$ 1.05	$ 1.09
Weighted average shares outstanding:
Basic (in shares)	96,955,043	95,950,994	93,285,490
Diluted (in shares)	96,955,043	97,605,783	95,843,749