Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 119,400	$ 242,708
Cost of revenue	80,973	162,361
Gross profit	38,427	80,347
Operating expenses:
Research and development	32,281	37,464
Sales and marketing	43,502	47,290
General and administrative	18,758	15,881
Total operating expenses	94,541	100,635
Operating loss	(56,114)	(20,288)
Interest expense	(4,843)	(4,527)
Other Nonoperating Expense	(172)
Other income (expense), net		828
Total other expense, net	(5,015)	(3,699)
Loss before income taxes	(61,129)	(23,987)
Income tax expense	(2,399)	(378)
Net loss	$ (63,528)	$ (24,365)
Earnings Per Share, Basic and Diluted	$ (0.43)	$ (0.17)
Weighted Average Number of Shares Outstanding, Basic and Diluted	147,560	142,601