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Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Payables and Accruals [Abstract] |  |
Accounts payable | $ 42,065 | $ 46,431
Accrued salaries and incentive compensation | 133,585 | 215,357
Accrued payroll taxes and benefits | 31,377 | 35,450
Accrued professional liabilities | 30,607 | 30,430
Accrued interest | 8,157 | 8,159
Other accrued expenses | 57,569 | 62,863
Accounts payable and accrued expenses, total | $ 303,360 | $ 398,690

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