Revenue - Activity of Deferred Contract Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Capitalized Contract Cost [Roll Forward]
Beginning balance	$ 78,876	$ 72,265
Capitalization of contract acquisition costs	58,196	38,756
Amortization of deferred contract acquisition costs	(37,123)	(32,145)
Ending balance	$ 99,949	$ 78,876