CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Net sales	$ 535,446	$ 415,563	$ 1,544,133	$ 930,315
Cost of goods sold (exclusive of amortization and depreciation)	380,663	302,595	1,099,907	665,767
Gross profit	154,783	112,968	444,226	264,548
Operating expenses:
Selling, general and administrative	117,410	95,962	344,074	218,758
Depreciation and amortization	19,729	13,711	57,152	33,605
Total operating expenses	137,139	109,673	401,226	252,363
Income from operations	17,644	3,295	43,000	12,185
Interest expense	(15,069)	(20,688)	(45,194)	(37,202)
Other income, net	35	79	13,419	93
Income (loss) before income taxes	2,610	(17,314)	11,225	(24,924)
Income tax expense (benefit)	1,211	(1,969)	4,637	(5,358)
Net income (loss)	$ 1,399	$ (15,345)	$ 6,588	$ (19,566)
Earnings (loss) per share data:
Basic (in dollars per share)	$ 0.03	$ (0.51)	$ 0.16	$ (0.65)
Diluted (in dollars per share)	$ 0.03	$ (0.51)	$ 0.16	$ (0.65)
Weighted average shares outstanding:
Basic (in shares)	42,865,407	29,974,239	41,021,808	29,974,239
Diluted (in shares)	42,870,391	29,974,239	41,023,935	29,974,239
Comprehensive income (loss):
Foreign currency translation adjustment	$ 3,037	$ 153	$ 5,695	$ 153
Unrealized (loss) gain on derivative, net of taxes of $1.0 million and $0.3 million, respectively and $1.9 million and $0.3 million, respectively	(1,647)	722	(3,047)	722
Total other comprehensive income	1,390	875	2,648	875
Total comprehensive income (loss)	$ 2,789	$ (14,470)	$ 9,236	$ (18,691)