Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Unaudited Quarterly Financial Data

The unaudited summarized financial data by quarter for the years ended December 31,2017 and 2016 is presented in the table below:

	Quarter 1		Quarter 2		Quarter 3		Quarter 4
2017:
Net sales	$	301,951	$	294,831	$	340,845	$	336,963
Gross profit	138,675		137,737		160,817		151,859
Selling, general, and administrative expenses	66,311		69,423		75,188		75,049
Operating income	72,364		68,314		85,629		76,810
Net income	44,090		42,682		53,137		53,620
Basic net income per common share	$	0.22	$	0.22	$	0.27	$	0.27
Diluted net income per common share	$	0.22	$	0.21	$	0.27	$	0.27
Basic weighted average shares	196,621,906		196,994,210		196,121,691		195,302,613
Diluted weighted average shares	199,524,913		199,618,809		198,659,459		197,889,189
2016:
Net sales	$	279,836	$	286,850	$	287,996	$	295,096
Gross profit	123,232		127,303		133,209		131,939
Selling, general, and administrative expenses	59,756		65,600		65,493		71,912
Operating income	63,476		61,703		35,716		60,027
Net income	37,333		36,624		21,482		34,802
Basic net income per common share	$	0.19	$	0.19	$	0.11	$	0.18
Diluted net income per common share	$	0.19	$	0.18	$	0.11	$	0.17
Basic weighted average shares	196,217,311		196,270,119		196,445,684		196,516,632
Diluted weighted average shares	198,160,465		198,441,315		199,452,308		199,446,875