Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2020 USD ($)	Mar. 31, 2023 segment	Dec. 31, 2023 USD ($) unit segment	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | segment		3	3	1
Number of operating segments | segment			3
Amount deposit accounts exceeded FDIC insured limit			$ 318,900,000	$ 324,700,000
Risk pool surplus or deficits, settlement period after performance year			18 months
Number of main reporting units | unit			4
Impairment of goodwill			$ 0	0	$ 0
Impairment of intangible assets			0	0	0
Fiduciary accounts payable			7,737,000	8,065,000
Total revenue			1,386,661,000	1,144,163,000	773,915,000
Contract liabilities			$ 744,000	531,000
Voting rights held (more than)			50.00%
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
Accounts Payable and Accrued Expenses
Summary Of Significant Accounting Policies [Line Items]
Revenue recognized			$ 500,000
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
Risk Pool Settlements and Incentives
Summary Of Significant Accounting Policies [Line Items]
Total revenue			$ 48,800,000
Management fee income
Summary Of Significant Accounting Policies [Line Items]
Total revenue			$ 38,677,000	$ 41,094,000	$ 35,959,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful Life (Years)			3 years
Minimum | Management fee income
Summary Of Significant Accounting Policies [Line Items]
Revenue, payment terms			1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful Life (Years)			39 years
Maximum | Management fee income
Summary Of Significant Accounting Policies [Line Items]
Revenue, payment terms			30 years
Certificates of Deposit
Summary Of Significant Accounting Policies [Line Items]
Marketable securities, current, maturity period (greater than)			90 days