Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Total revenues	$ 103,155	$ 38,267	$ 272,298	$ 111,959
Cost of sales	45,487	19,441	108,359	44,634
Gross profit	57,668	18,826	163,939	67,325
Research and development	13,284	7,627	25,905	15,502
Sales and marketing	27,545	13,064	56,103	27,287
General and administrative	11,500	6,783	22,032	13,903
Acquisition and integration costs	4,935	2,379	8,402	2,431
Total operating expenses	57,264	29,853	112,442	59,123
Operating income (loss)	404	(11,027)	51,497	8,202
Interest expense, net	(6,839)	(2,778)	(14,689)	(5,603)
Loss on extinguishment of debt	(2,398)	0	(6,965)	0
Total other expense, net	(9,237)	(2,778)	(21,654)	(5,603)
(Loss) income before income taxes	(8,833)	(13,805)	29,843	2,599
(Benefit) provision for income taxes	(5,757)	(1,963)	(1,039)	151
Net (loss) income	$ (3,076)	$ (11,842)	$ 30,882	$ 2,448
Basic (loss) earnings per share (in usd per share)	$ (0.08)	$ (0.35)	$ 0.84	$ 0.07
Diluted (loss) earnings per share (in usd per share)	$ (0.08)	$ (0.35)	$ 0.81	$ 0.07
Shares used in basic per share calculation (in shares)	37,925	33,500	36,586	33,351
Shares used in diluted per share calculation (in shares)	37,925	33,500	42,255	34,295