Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) Customer $ / shares	Jun. 30, 2021 Customer	Jun. 30, 2022 USD ($) Customer $ / shares	Jun. 30, 2021 Customer	Dec. 31, 2021 USD ($) Customer $ / shares	Mar. 31, 2021	Jan. 14, 2021
Summary Of Significant Accounting Policies [Line Items]
Description of significant off-balance sheet risk			The Company has no significant off‑balance sheet risk, such as foreign exchange contracts, option contracts, or other foreign hedging arrangements.
Accrued expenses, accrued income taxes and other current liabilities	$ 74,391		$ 74,391		$ 78,586
Trade Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Gross trade accounts receivable from receivables in transit from the third-party payment processor	25,907		25,907		18,747
Receivables offset by payments received in advance	44,460		44,460		46,822
Accrued expenses, accrued income taxes and other current liabilities	$ 18,553		$ 18,553		$ 28,075
Class A Common Stock
Summary Of Significant Accounting Policies [Line Items]
Common stock, par value | $ / shares	$ 0.001		$ 0.001		$ 0.001
Car Offer
Summary Of Significant Accounting Policies [Line Items]
Business acquisition, percentage of interest acquired	51.00%		51.00%			51.00%	51.00%
Sales Revenue, Net | Concentration of Credit Risk
Summary Of Significant Accounting Policies [Line Items]
Number of major customers | Customer	2	0	0	0
Sales Revenue, Net | Concentration of Credit Risk | Customer One
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk, percentage	11.00%
Sales Revenue, Net | Concentration of Credit Risk | Customer Two
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk, percentage	11.00%
Net Accounts Receivable | Advertising Customers
Summary Of Significant Accounting Policies [Line Items]
Unbilled accounts receivable	$ 6,415		$ 6,415		$ 7,356
Net Accounts Receivable | Concentration of Credit Risk
Summary Of Significant Accounting Policies [Line Items]
Number of major customers | Customer			1		2
Net Accounts Receivable | Concentration of Credit Risk | Customer One
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk, percentage			42.00%		47.00%
Net Accounts Receivable | Concentration of Credit Risk | Customer Two
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk, percentage					18.00%