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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions |  |  | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 19, 2024 | Jul. 07, 2023 | Aug. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Loss Contingencies [Line Items] |  |  |  |  |
Aggregate amount on settlement agreements | $ 400.0 |  |  |  |
Inman Litigation [Member] | Compensatory Damages [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Awarded plaintiff damages amount |  | $ 80.0 |  |  |
Inman Litigation [Member] | Punitive Damages [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Awarded plaintiff damages amount |  | $ 405.0 |  |  |
Government Investigation [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Aggregate amount on settlement agreements |  |  |  |  | $ 19.9
Maximum [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum coverage limit per claim |  |  | $ 7.0 | $ 10.0 |
Maximum professional liability for certain other claims thereafter |  |  |  | 25.0 |
Reinsurance policy aggregate policy limit |  |  | 78.0 | 80.0 |
Minimum [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum professional liability for certain other claims thereafter |  |  | 10.0 | 15.0 |
Reinsurance policy aggregate policy limit |  |  | $ 75.0 | $ 75.0 |

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