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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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