Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$ 440,804	$ 391,660	$ 342,511
Cost of sales	285,935	251,464	243,893
Gross profit	154,869	140,196	98,618
Selling, general and administrative expenses	77,463	72,370	73,967
Income from operations	77,406	67,826	24,651
Interest expense, net	619	878	602
Income before income taxes	76,787	66,948	24,049
Provision (benefit) for income taxes	28,689	25,427	(10,549)
Net income	$ 48,098	$ 41,521	$ 34,598
Basic earnings per common share	$ 1.53	$ 1.28	$ 1.03
Basic weighted average common shares outstanding	31,350,542	32,319,649	33,589,682
Diluted earnings per common share	$ 1.52	$ 1.27	$ 1.01
Diluted weighted average common shares outstanding	31,682,509	32,751,074	34,273,502
Comprehensive income	$ 48,098	$ 41,521	$ 34,598