Accounts Receivable and Net Revenue - Schedule of Net Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Abstract]
Net revenue	$ 487,783	$ 468,844	$ 963,979	$ 927,203
Net patient service revenue [Member]
Disaggregation of Revenue [Abstract]
Net revenue	418,699	397,410	824,051	786,788
Hospital contract administrative fees [Member]
Disaggregation of Revenue [Abstract]
Net revenue	68,305	68,224	138,225	133,408
Other revenue [Member]
Disaggregation of Revenue [Abstract]
Net revenue	$ 779	$ 3,210	$ 1,703	$ 7,007

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details