Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues:
Total revenue	$ 281,365	$ 198,968
Cost of revenues:
Total cost of revenues	54,734	38,285
Gross profit	226,631	160,683
Operating expenses:
Research and development	68,396	46,202
Sales and marketing	141,017	102,328
General and administrative	32,250	26,255
Total operating expenses	241,663	174,785
Loss from operations	(15,032)	(14,102)
Other expense:
Interest income	475	4,057
Interest expense	(9,399)	(5,953)
Other income (expense)	660	(1,052)
Total other expense	(8,264)	(2,948)
Loss before income tax expense	(23,296)	(17,050)
Income tax benefit (expense)	137	(666)
Net loss	$ (23,159)	$ (17,716)
Net loss per share, basic and diluted	$ (0.50)	$ (0.41)
Weighted average common shares used in computing basic and diluted net loss per share:	46,428	43,275
Subscription [Member]
Revenues:
Total revenue	$ 270,263	$ 191,229
Cost of revenues:
Total cost of revenues	43,853	29,734
Professional Services and Other [Member]
Revenues:
Total revenue	11,102	7,739
Cost of revenues:
Total cost of revenues	$ 10,881	$ 8,551