Accrued Professional Liabilities - Schedule of Accrued Professional Liability (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Balance at beginning of year	$ 221,946	$ 202,596	$ 199,561
Liabilities recognized, offset by insurance receivable	641	1,230	(5,510)
Provision (adjustment) for losses related to Current year	44,331	52,273	55,144
Provision (adjustment) for losses related to Prior years	(5,051)	(8,316)	(7,551)
Total provision for losses	39,280	43,957	47,593
Claim payments related to Current year	(47)	(891)	(97)
Claim payments related to Prior years	(42,140)	(24,946)	(38,951)
Total payments	(42,187)	(25,837)	(39,048)
Balance at end of year	$ 219,680	$ 221,946	$ 202,596