Income Taxes - Schedule of Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforward	$ 315,482	$ 240,048
Stock-based compensation	22,561	12,201
Deferred revenue	682	0
Research and development credit, net of uncertain tax position reserve	13,543	9,284
Operating lease liabilities	14,498	16,237
Other	14,191	11,016
Total deferred tax assets	380,957	288,786
Deferred tax liabilities:
Deferred commissions	(17,208)	(12,288)
Operating lease right-of-use assets	(11,331)	(12,243)
Property and equipment	(6,625)	(4,458)
Definite-lived intangibles	(5,073)	(8,278)
Indefinite-lived intangibles	(4,433)	(3,127)
Deferred revenue	0	(322)
Other	(86)	(193)
Total deferred tax liabilities	(44,756)	(40,909)
Net deferred tax assets before valuation allowance	336,201	247,877
Valuation allowance	(340,113)	(248,315)
Net deferred tax liability	$ (3,912)	$ (438)