Interim Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Summary of Interim Financial Data

	Three Months Ended
	December 31, 2015		September 30, 2015		June 30, 2015		March 31, 2015		December 31, 2014		September 30, 2014		June 30, 2014		March 31, 2014
	(In thousands, except share and per share data)
Net sales		89,202		94,023		136,779		120,800		74,202		95,502		121,311		100,645
Gross profit		31,955		22,143		52,524		48,247		26,635		30,369		45,026		38,167
Net income		8,086		3,744		18,715		17,553		5,153		8,913		15,161		12,295
Basic net income per share	$	0.26	$	0.12	$	0.59	$	0.55	$	0.16	$	0.28	$	0.46	$	0.37
Basic weighted average common shares outstanding		30,766,943		31,227,643		31,735,333		31,683,672		31,641,963		31,606,264		32,898,288		33,128,676
Diluted net income per share	$	0.26	$	0.12	$	0.58	$	0.55	$	0.16	$	0.28	$	0.46	$	0.37
Diluted weighted average common shares outstanding		30,966,682		31,537,010		32,142,939		32,094,828		32,085,210		32,008,781		33,307,463		33,599,438