CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 529,230	$ 270,147	$ 1,008,687	$ 514,752
Cost of goods sold (exclusive of amortization and depreciation)	379,698	190,812	719,244	363,172
Gross profit	149,532	79,335	289,443	151,580
Operating expenses:
Selling, general and administrative	113,602	66,025	226,664	122,796
Depreciation and amortization	19,027	10,281	37,423	19,894
Total operating expenses	132,629	76,306	264,087	142,690
Income from operations	16,903	3,029	25,356	8,890
Interest expense	(14,876)	(8,478)	(30,125)	(16,514)
Other income, net	95	4	13,384	14
Income (loss) before income taxes	2,122	(5,445)	8,615	(7,610)
Income tax expense (benefit)	862	(2,485)	3,426	(3,389)
Net income (loss)	$ 1,260	$ (2,960)	$ 5,189	$ (4,221)
Earnings (loss) per share data:
Basic (in dollars per share)	$ 0.03	$ (0.10)	$ 0.13	$ (0.14)
Diluted (in dollars per share)	$ 0.03	$ (0.10)	$ 0.13	$ (0.14)
Weighted average shares outstanding:
Basic (in shares)	42,865,407	29,974,239	40,084,730	29,974,239
Diluted (in shares)	42,879,319	29,974,239	40,084,940	29,974,239
Comprehensive income (loss):
Foreign currency translation adjustment	$ 2,085	$ 0	$ 2,658	$ 0
Unrealized loss on derivative, net of taxes of $605 and $901, respectively	(939)	0	(1,400)	0
Total other comprehensive income	1,146	0	1,258	0
Total comprehensive income (loss)	$ 2,406	$ (2,960)	$ 6,447	$ (4,221)