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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 |  |

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