Investments in Other Entities - Summarized Balance Sheets and Statements of Income (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents		$ 274,613		$ 288,027
Receivables, net		76,005		49,631
Loan receivable		973		996
Total assets	[1]	998,942		966,213
Liabilities and stockholders' equity
Current liabilities		173,245		148,610
Stockholders’ equity (deficit)		551,007	$ 472,638	544,310	$ 454,107
Total liabilities, mezzanine equity and equity		998,942		966,213
Statement of Operations
Revenue		337,244	263,258
Expenses		314,871	237,047
Income from operations		22,373	26,211
Other Income		1,204	613
Net income		12,488	11,450
LaSalle Medical Associates
Assets
Cash and cash equivalents		14,873		15,671
Receivables, net		12,526		5,064
Prepaid assets		6,952		5,032
Loan receivable		2,250		2,250
Restricted cash		703		700
Total assets		37,304		28,717
Liabilities and stockholders' equity
Current liabilities		30,260		30,331
Stockholders’ equity (deficit)		7,044		(1,614)
Total liabilities, mezzanine equity and equity		37,304		$ 28,717
Statement of Operations
Revenue		67,619	67,566
Expenses		58,964	61,786
Income from operations		8,655	5,780
Other Income		3	0
Net income		$ 8,658	$ 5,780

[1] The Company’s consolidated balance sheets include the assets and liabilities of its consolidated VIEs. The consolidated balance sheets include total assets that can be used only to settle obligations of the Company’s consolidated VIEs totaling $529.3 million and $523.7 million as of March 31, 2023 and December 31, 2022, respectively, and total liabilities of the Company’s consolidated VIEs for which creditors do not have recourse to the general credit of the primary beneficiary of $129.4 million and $131.8 million as of March 31, 2023 and December 31, 2022, respectively. The VIE balances do not include $375.6 million of investment in affiliates and $34.0 million of amounts due from affiliates as of March 31, 2023 and $304.8 million of investment in affiliates and $30.3 million of amounts due from affiliates as of December 31, 2022 as these are eliminated upon consolidation and not presented within the consolidated balance sheets. See Note 17 — “Variable Interest Entities (VIEs)” for further detail.