Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Summary of Unaudited Quarterly Results of Operations

The following summarizes the unaudited quarterly results of operations for the years ended December 31, 2014 and 2013.

	Year ended December 31, 2014
	March 31		June 30		Sept. 30			Dec. 31
Net sales	$	102,528	$	106,680	$	125,632		$	153,761
Income from operations		8,338		8,237		2,552			8,560
Net income		5,238		5,200		(3,840	)		1,619
Basic net income per share		0.30		0.29		(0.21	)		0.09
Diluted net income per share		0.29		0.29		(0.21	)		0.08
Weighted average shares outstanding:
Basic number of shares		17,656		17,779		17,979			18,970
Effect of dilutive stock options		306		393		—			347
Diluted number of shares		17,962		18,172		17,979			19,317

	Year ended December 31, 2013
	March 31		June 30		Sept. 30		Dec. 31
Net sales	$	93,797	$	96,305	$	93,023	$	90,081
Income from operations		5,639		7,920		7,794		6,474
Net income		2,871		4,770		5,052		4,485
Basic net income per share		0.17		0.28		0.29		0.25
Diluted net income per share		0.17		0.28		0.29		0.25
Weighted average shares outstanding:
Basic number of shares		17,055		17,136		17,302		17,527
Effect of dilutive stock options		107		36		148		290
Diluted number of shares		17,162		17,172		17,450		17,817