Accrued Professional Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Total accrued professional liability	$ 283,300	$ 307,900
Accrued professional liabilities	32,039	32,232
Insurance receivables	33,200
Accrued professional liability incurred but loss reserves not reported for claims	178,100	215,500
Accrued professional liability incurred and loss reserves reported for claims	$ 105,200	$ 92,400