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Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) Customer	Jun. 30, 2021 Customer	Jun. 30, 2022 USD ($) Customer	Jun. 30, 2021 Customer	Dec. 31, 2021 USD ($)	Jan. 01, 2022 USD ($)
Schedule Of Accounting Policies [Line Items]
Number of service providers accounted for more than 10% of revenue | Customer	2	1	2	1
Customer funds held in trust accounts	$ 104,611		$ 104,611		$ 123,643
Deferred compensation plan assets	1,464		1,464		1,343
Deferred compensation plan liabilities	1,394		1,394		1,387
Accumulated deficit	$ (923,435)		$ (923,435)		$ (871,922)
Cumulative Effect Adjustment
Schedule Of Accounting Policies [Line Items]
Accumulated deficit						$ 629
Total Revenues | Customer Concentration Risk | Two Service Providers
Schedule Of Accounting Policies [Line Items]
Concentration risk percentage	66.00%		59.00%
Total Revenues | Customer Concentration Risk | One Service Provider
Schedule Of Accounting Policies [Line Items]
Concentration risk percentage		49.00%		49.00%
Accounts Receivable | Customer Concentration Risk | Two Service Providers
Schedule Of Accounting Policies [Line Items]
Concentration risk percentage			63.00%		66.00%

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