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Stockholders' Equity (Deficit) - Summary of stock-based compensation expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	$ 155,624	$ 143,341	$ 18,617
Capitalized stock-based compensation	2,625	547	69
Total stock-based compensation	158,249	143,888	18,686
Cost Of Revenue [Member] | Subscription [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	12,571	2,572	1,161
Cost Of Revenue [Member] | Services [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	5,418	1,745	994
Research and Development [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	49,051	33,755	6,268
Sales and Marketing [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	55,506	14,734	6,545
General and Administrative [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	$ 33,078	$ 90,535	$ 3,649

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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