Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Accounts payable	$ 31,857	$ 36,645
Accrued salaries and incentive compensation	197,831	213,974
Accrued payroll taxes and benefits	34,983	34,994
Accrued professional liabilities	32,232	37,729
Accrued interest	8,921	29,052
Other accrued expenses	68,401	41,724
Accounts payable and accrued expenses, total	$ 374,225	$ 394,118