Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Dec. 16, 2020	Mar. 02, 2020	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Concentration Risk [Line Items]
Reduction to revenue, end-user incentives			$ 16,300	$ 17,600
Sales and marketing expense, end-user incentive			37,000	33,300
Engagement expense			42,100	36,000
Restricted cash			2,920		$ 2,920
Advertising costs			$ 59,700	$ 54,500
Number of shares issued in private placement (in shares)		69,000,000	10,033,333
Number of warrants per unit (in shares)	0.25
Stock sold, price per share (in dollars per share)		$ 10.00	$ 23.34
Warrant exercise price (in dollars per share)		$ 11.50
Warrants forfeited (in shares)			5,016,666
Restricted stock units
Concentration Risk [Line Items]
Vesting period			4 years
Sponsor
Concentration Risk [Line Items]
Warrants forfeited (in shares)	5,016,666
Public Warrant
Concentration Risk [Line Items]
Number of shares issued in private placement (in shares)		17,250,000
Warrant exercise price (in dollars per share)		$ 11.50
Warrants outstanding (in shares)			0
Private Common Stock Warrants
Concentration Risk [Line Items]
Number of shares issued in private placement (in shares)		10,033,333
Stock sold, price per share (in dollars per share)		$ 1.50
Warrants outstanding (in shares)			4,535,728
Class A common stock, par value $0.0001 per share
Concentration Risk [Line Items]
Number of shares per unit (in shares)		1
Number of shares called by each warrant (in shares)		1
Class A common stock, par value $0.0001 per share | Public Warrant
Concentration Risk [Line Items]
Number of shares called by each warrant (in shares)		1
Class A common stock, par value $0.0001 per share | Private Common Stock Warrants
Concentration Risk [Line Items]
Number of shares called by each warrant (in shares)		1
Revenue | Customer Concentration Risk | Developer One
Concentration Risk [Line Items]
Concentration risk, percentage (less than)			41.00%	42.00%
Revenue | Customer Concentration Risk | Developer Two
Concentration Risk [Line Items]
Concentration risk, percentage (less than)			38.00%	41.00%