Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Net sales	$ 4,127,109	$ 2,515,169	$ 2,326,905
Cost of products sold	3,114,040	1,919,804	1,799,065
Gross profit	1,013,069	595,365	527,840
Operating expense	808,085	478,284	428,977
Income from operations	204,984	117,081	98,863
Interest expense, financing costs, and other	58,452	11,037	10,095
Income before provision for income taxes	146,532	106,044	88,768
Provision for income taxes	56,615	43,767	34,922
Net income	$ 89,917	$ 62,277	$ 53,846
Weighted-average common stock outstanding:
Basic	59,424,372	49,578,130	49,227,466
Diluted	60,418,067	50,173,478	49,947,699
Net income per share:
Basic	$ 1.51	$ 1.26	$ 1.09
Diluted	$ 1.49	$ 1.24	$ 1.08