Discontinued Operations - Summary of Results of Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Medical services revenue	$ 525	$ 6,444	$ 155,296
Income (loss) from operations	491	(1,475)	(17,348)
Other income (expense), net	0	(1,851)	(2,351)
Gain (loss) on sales of assets, net	0	473	20,401
Interest expense	0	(137)	(350)
Income (loss) before income taxes and noncontrolling interests	491	(2,990)	352
Income tax benefit (expense)	(26)	1,687	2,804
Income (loss) from discontinued operations	465	(1,303)	3,156
Net income (loss) from discontinued operations attributable to common shares	(465)	(1,303)	3,156
Medical Services Revenue
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Medical services revenue	511	6,408	155,108
Other Operating Revenue
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Medical services revenue	14	36	188
Medical Services Expense
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairments (recoveries)	34	(865)	84,189
Other Medical Expenses
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairments (recoveries)	0	2,739	57,546
General And Administrative
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairments (recoveries)		5,919	30,341
Depreciation And Amortization
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairments (recoveries)	$ 0	$ 126	$ 568