Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net revenue	$ 225,392	$ 181,579	$ 629,003	$ 471,220
Cost of sales	158,132	128,162	444,909	337,395
Gross profit	67,260	53,417	184,094	133,825
Operating expenses
Selling	13,028	10,282	36,239	27,275
Administrative	31,504	25,841	92,677	72,606
Amortization	2,889	1,817	8,178	4,091
Operating income	19,839	15,477	47,000	29,853
Other expense
Interest expense	1,544	989	4,605	2,654
Other	23	138	248	357
Non-operating (income) expense	1,567	1,127	4,853	3,011
Income before income taxes	18,272	14,350	42,147	26,842
Income tax provision	6,723	4,869	14,792	9,612
Net income attributable to common stockholders	$ 11,549	$ 9,481	$ 27,355	$ 17,230
Basic net income per share attributable to common stockholders	$ 0.37	$ 0.30	$ 0.87	$ 0.55
Diluted net income per share attributable to common stockholders	$ 0.37	$ 0.30	$ 0.87	$ 0.55
Weighted average shares outstanding:
Basic	31,323,600	31,237,275	31,294,596	31,318,682
Diluted	31,377,790	31,288,609	31,351,991	31,343,230