Quarterly results of operations (unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly results of operations (unaudited)

The following tables summarize the Company's results by quarter for the years ended December 31, 2013 and 2012. The quarterly results may not be comparable primarily due to acquisitions in 2013 and 2012. Refer to Note 3, Acquisitions, for further information.



	2013
(in thousands, except per share information)	Q1			Q2		Q3		Q4
Net sales	$	372,999		$	367,887	$	390,192	$	393,733
Cost of sales	258,193			253,404		265,021		272,968
Gross profit	114,806			114,483		125,171		120,765
Total operating expenses	65,593			67,345		72,179		67,866
Earnings from equity investment	—			—		2,946		4,366
Operating income	49,213			47,138		55,938		57,265
Total other expense	1,896			4,130		8,833		8,613
Income before income taxes	47,317			43,008		47,105		48,652
Provision for income tax expense	15,379			13,068		13,924		14,107
Net income	31,938			29,940		33,181		34,545
Less: Income (loss) attributable to noncontrolling interest	(2		)	21		40		6
Net income attributable to common stockholders	$	31,940		$	29,919	$	33,141	$	34,539

Weighted average shares outstanding
Basic	88,533			91,032		91,443		91,743
Diluted	94,356			94,606		94,734		94,936
Earnings per share
Basic	$	0.36		$	0.33	$	0.36	$	0.38
Diluted	$	0.34		$	0.32	$	0.35	$	0.36



	2012
(in thousands, except per share information)	Q1		Q2		Q3		Q4
Net sales	$	363,489	$	373,512	$	347,767	$	330,165
Cost of sales	237,046		250,710		231,273		232,847
Gross profit	126,443		122,802		116,494		97,318
Total operating expenses	56,230		52,964		53,590		59,393
Operating income	70,213		69,838		62,904		37,925
Total other expense	5,817		3,958		4,356		3,954
Income before income taxes	64,396		65,880		58,548		33,971
Provision for income tax expense	21,885		21,742		17,605		10,033
Net income	42,511		44,138		40,943		23,938
Less: Income attributable to noncontrolling interest	29		17		20		8
Net income attributable to common stockholders	$	42,482	$	44,121	$	40,923	$	23,930

Weighted average shares outstanding
Basic	67,960		82,495		84,993		86,077
Diluted	74,741		89,794		92,339		93,355
Earnings per share
Basic	$	0.63	$	0.53	$	0.48	$	0.28
Diluted	$	0.57	$	0.49	$	0.44	$	0.26

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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