Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue:
Total revenue	$ 121,970	$ 100,052	$ 350,568	$ 289,436
Cost of revenue:
Total cost of revenue	65,105	57,091	187,715	165,289
Total gross profit	56,865	42,961	162,853	124,147
Operating expenses:
Research and development	44,814	31,316	127,649	89,059
Sales and marketing	65,899	55,459	190,130	167,045
General and administrative	32,760	24,485	87,131	79,342
Restructuring charges	0	822	1,927	19,597
Total operating expenses	143,473	112,082	406,837	355,043
Operating loss	(86,608)	(69,121)	(243,984)	(230,896)
Interest income	1,226	2,163	4,235	9,450
Interest expense	(14,903)	(14,353)	(44,289)	(45,555)
Other income (expense), net	(464)	156	(364)	(951)
Loss before income taxes from continuing operations	(100,749)	(81,155)	(284,402)	(267,952)
Provision for income taxes	498	458	2,441	1,464
Loss from continuing operations	(101,247)	(81,613)	(286,843)	(269,416)
Net income from discontinued operations, net of income taxes	33,025	42,494	103,279	100,716
Net loss	(68,222)	(39,119)	(183,564)	(168,700)
Dividend on series A convertible preferred stock	(4,613)	0	(13,688)	0
Accretion of series A convertible preferred stock	0	0	(82)	0
Net loss attributable to common stockholders	(72,835)	(39,119)	(197,334)	(168,700)
Net loss attributable to common stockholders	$ (72,835)	$ (39,119)	$ (197,334)	$ (168,700)
Net loss per share attributable to common stockholders, basic and diluted:
Continuing operations, basic (usd per share)	$ (0.45)	$ (0.36)	$ (1.27)	$ (1.22)
Continuing operations, diluted (usd per share)	(0.45)	(0.36)	(1.27)	(1.22)
Discontinued operations, basic (usd per share)	0.14	0.19	0.44	0.46
Discontinued operations, diluted (usd per share)	0.14	0.19	0.44	0.46
Net loss per share attributable to common stockholders, basic (usd per share)	(0.31)	(0.17)	(0.83)	(0.76)
Net loss per share attributable to common stockholders, diluted (usd per share)	$ (0.31)	$ (0.17)	$ (0.83)	$ (0.76)
Weighted average shares used in computing net loss per share, basic (shares)	237,168	224,807	236,404	221,329
Weighted average shares used in computing net loss per share, diluted (shares)	237,168	224,807	236,404	221,329
Platform, cloud subscription and managed services
Revenue:
Total revenue	$ 60,249	$ 48,613	$ 168,184	$ 141,966
Cost of revenue:
Total cost of revenue	28,725	27,431	83,581	79,788
Professional services
Revenue:
Total revenue	61,721	51,439	182,384	147,470
Cost of revenue:
Total cost of revenue	$ 36,380	$ 29,660	$ 104,134	$ 85,501