Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net revenue	$ 301,728	$ 255,669
Cost of sales	221,752	183,497
Gross profit	79,976	72,172
Operating expenses
Selling	15,846	14,026
Administrative	44,203	39,261
Amortization	7,128	6,416
Operating income	12,799	12,469
Other expense
Interest expense, net	4,040	2,170
Other	122	152
Income before income taxes	8,637	10,147
Income tax provision	2,243	3,783
Net income	6,394	6,364
Other comprehensive income, net of tax:
Unrealized gain on cash flow hedge, net of tax provision of $386 for the three months ended March 31, 2018	1,160
Comprehensive income	$ 7,554	$ 6,364
Basic and diluted net income per share	$ 0.20	$ 0.20
Weighted average shares outstanding:
Basic	31,548,745	31,590,478
Diluted	31,772,581	31,687,056