Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	1 Months Ended		12 Months Ended
	Sep. 30, 2021 USD ($)	Apr. 30, 2020 USD ($)	Dec. 31, 2022 USD ($) segment unit	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | segment			1
Number of reportable segments | segment			1
Amount deposit accounts exceeded FDIC insured limit			$ 324,700,000	$ 285,900,000
Marketable securities – certificates of deposit				25,024,000
Marketable securities – equity securities			$ 5,567,000	28,393,000
Risk pool surplus or deficits, settlement period after performance year			18 months
Number of main reporting units | unit			3
Goodwill			$ 275,675,000	253,039,000	$ 239,053,000
Impairment of intangible assets			0	0	0
Impairment of goodwill			0	0	0
Fiduciary accounts payable			$ 8,065,000	10,534,000
Derivative Liability, Statement of Financial Position [Extensible Enumeration]			Other long-term liabilities
Contingent equity securities, percentage			0.00%
Equity securities, unrealized loss			$ 2,400,000	0
Total revenue			1,144,163,000	773,915,000	687,180,000
Contract liabilities			$ 531,000	16,798,000
Voting rights held (more than)			50.00%
Healthcare Delivery
Summary Of Significant Accounting Policies [Line Items]
Goodwill							$ 116,500,000
Contingent equity securities
Summary Of Significant Accounting Policies [Line Items]
Contingent equity securities			$ 1,900,000	4,300,000
Interest rate swaps
Summary Of Significant Accounting Policies [Line Items]
Derivative liability				1,071,000
Accounts Payable and Accrued Expenses
Summary Of Significant Accounting Policies [Line Items]
Revenue recognized			16,800,000
Other Noncurrent Assets | Interest rate swaps | Cash Flow Hedging | Designated as Hedging Instrument
Summary Of Significant Accounting Policies [Line Items]
Derivative asset, fair value			3,200,000
Level 2
Summary Of Significant Accounting Policies [Line Items]
Marketable securities – certificates of deposit				0
Marketable securities – equity securities			$ 0	4,270,000
Level 2 | Warrants
Summary Of Significant Accounting Policies [Line Items]
Derivative liability				1,100,000
Level 2 | Interest rate swaps
Summary Of Significant Accounting Policies [Line Items]
Derivative liability				1,071,000
APC | UCAP
Summary Of Significant Accounting Policies [Line Items]
Ownership interest		100.00%
Certificates of Deposit
Summary Of Significant Accounting Policies [Line Items]
Marketable securities, current, maturity period (greater than)			4 months
Marketable securities – certificates of deposit			$ 0	25,000,000
Clinigence Holdings, Inc.
Summary Of Significant Accounting Policies [Line Items]
Payments to acquire common stock and warrants	$ 3,000,000
CMS
Summary Of Significant Accounting Policies [Line Items]
Expected period of payment upon termination of agreement			30 days
PMPM
Summary Of Significant Accounting Policies [Line Items]
Contract term			one year
Management contracts
Summary Of Significant Accounting Policies [Line Items]
Total revenue			$ 41,094,000	35,959,000	$ 34,850,000
NGACO
Summary Of Significant Accounting Policies [Line Items]
Contract liabilities				16,300,000
Risk Pool Settlements and Incentives
Summary Of Significant Accounting Policies [Line Items]
Total revenue			48,800,000
Universal Care Inc | UCAP
Summary Of Significant Accounting Policies [Line Items]
Ownership interest disposed		48.90%
Universal Care Inc | APC
Summary Of Significant Accounting Policies [Line Items]
Additional proceeds to be received from sale of equity method investments, if circumstances met		$ 15,700,000
PASC
Summary Of Significant Accounting Policies [Line Items]
Impairment of investments			$ 0	$ 0		$ 0
Minimum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, useful life			3 years
Minimum | Management contracts
Summary Of Significant Accounting Policies [Line Items]
Revenue, payment terms			1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, useful life			39 years
Maximum | Management contracts
Summary Of Significant Accounting Policies [Line Items]
Revenue, payment terms			10 years