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Share-Based Compensation - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Unrecognized pre-tax noncash compensation | $ 35.9 |  |
ESPP percentage | 15.00% |  |
Weighted Average Remaining Contractual Term, Grants Vested | 1 year 1 month 6 days |  |
Employee stock purchase plan expenses | $ 0.1 | $ 0.2 |
2021 Equity Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Common stock, reserved for future issuance |  |  | 17,525,000
Share available for issuance | 22,713,947 |  |
Weighted Average Remaining Contractual Term, Grants Vested | 6 years 6 months |  |
First Advantage Corporations [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Number of units, issued | 0 |  |
Employee Stock Option |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Unrecognized pre-tax noncash compensation | $ 14.4 |  |
Restricted Stock Agreements [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Unrecognized pre-tax noncash compensation | 7.9 |  |
Restricted Stock Units [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Unrecognized pre-tax noncash compensation | $ 13.6 |  |

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- Definition Line items represent financial concepts included in a table. 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