Summary of Significant Accounting Policies - Variable Interest Entities (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2026 USD ($) hospital	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) hospital	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) hospital
Variable Interest Entity [Line Items]
Number of consolidated variable interest entities | hospital		9		9		9
Assets	[1]	$ 5,353,019		$ 5,353,019		$ 5,290,208
Income before income taxes		81,025	$ (2,203)	198,819	$ 193,987
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Assets		1,300,000		1,300,000		$ 1,300,000
Income before income taxes		$ 61,300	$ 75,700	$ 181,900	$ 206,300

[1] As of September 30, 2026 and December 31, 2025, the unaudited condensed consolidated balance sheets included total liabilities of consolidated variable interest entities of $301.7 million and $335.1 million, respectively. Refer to Note 2, Summary of Significant Accounting Policies, for further discussion.