CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net revenues	$ 131,590	$ 97,409
Cost of revenues	42,390	23,335
Gross profit	89,200	74,074
Operating expenses:
Research and development	39,541	32,692
Sales and marketing	20,238	18,717
General and administrative	26,145	23,670
Restructuring charges	0	22
Total operating expenses	85,924	75,101
Income (loss) from operations	3,276	(1,027)
Interest expense, net and other income, net:
Interest expense, net	(13,427)	(4,232)
Other income, net	4,960	1,567
Total interest expense, net and other income, net	(8,467)	(2,665)
Loss before provision for income taxes	(5,191)	(3,692)
Provision for income taxes	522	626
Net loss	$ (5,713)	$ (4,318)
Net loss per share, basic and diluted (in dollars per share)	$ (0.05)	$ (0.04)
Weighted average shares used to compute net loss per share, basic and diluted (in shares)	122,428	116,730