Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 347,821	$ 162,043
Operating expenses
Cost of sales (exclusive of amortization of acquired intangible assets)	81,606	42,827
Research and development	43,509	31,785
Sales and marketing	167,749	90,939
General and administrative	113,991	63,806
Amortization of acquired intangible assets	23,339	760
Total operating expenses	430,194	230,117
Loss from operations	(82,373)	(68,074)
Other income (expense)
Investment income, net	97	6,655
Interest expense	(25,153)	(21,990)
Total other income (expense)	(25,056)	(15,335)
Net loss before tax	(107,429)	(83,409)
Income tax benefit	1,732	470
Net loss	$ (105,697)	$ (82,939)
Net loss per share - basic and diluted (in usd per share)	$ (0.71)	$ (0.66)
Weighted average common shares outstanding - basic and diluted (in shares)	148,151	126,248