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Related-Party Transactions - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Mar. 31, 2024 | Dec. 31, 2023
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | $ 486,265,000 | $ 348,209,000 | $ 890,621,000 | $ 685,453,000 |  |
Operating lease right-of-use assets | 28,792,000 |  | 28,792,000 |  |  | $ 37,396,000
Expenses payable | 1,200,000 |  | 1,700,000 | 400,000 |  |
Investments in privately held entities | 8,896,000 |  | 8,896,000 |  |  | 6,396,000
Operating lease liabilities | 4,884,000 |  | 4,884,000 |  |  | 4,607,000
Third Way Health | Agreement for Future Equity Fund |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Investments in privately held entities | 6,000,000 |  | 6,000,000 |  |  | 3,500,000
Risk pool settlements and incentives |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | 18,408,000 | 20,121,000 | 35,785,000 | 33,583,000 |  |
LMA | Related Party |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue |  | 6,900,000 |  | 11,900,000 |  |
First Commonwealth Property, LLC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets | 700,000 |  | 700,000 |  |  | 800,000
Operating lease liabilities | 800,000 |  | 800,000 |  |  | 800,000
Allied Pacific Holdings Investment Management, LLC | Chief Executive Officer |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets | 800,000 |  | 800,000 |  |  | 14,100,000
Operating lease liabilities | 800,000 |  | 800,000 |  |  | 14,500,000
AHMC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Amount outstanding under agreement | 67,400,000 |  | 67,400,000 |  |  | $ 54,000,000
AHMC | Related Party | Risk pool settlements and incentives |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | 11,000,000 | 15,800,000 | 19,100,000 | 28,800,000 |  |
AHMC | Arroyo Vista | Related Party |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | 600,000 | 400,000 | 1,000,000 | 800,000 |  |
APC | Board [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Payments for repurchase of shares |  |  | 0 | 9,500,000 |  |
APC | Sunny Village Care Center | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 200,000 | 600,000 | 200,000 | 800,000 |  |
APC | Board Members | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 4,900,000 | 9,500,000 | 9,600,000 | 18,800,000 |  |
APC | Board Members Who Are Also Officers | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 600,000 | 700,000 | 1,400,000 | 1,600,000 |  |
APC | Allied Pacific Holdings Investment Management, LLC | Taxes Associated with Excluded Assets Spin-off |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 5,300,000 |  | 5,300,000 |  |  |
AMG | First Commonwealth Property, LLC | Office Lease |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 38,000 |  | 100,000 |  |  |
AMG | Allied Pacific Holdings Investment Management, LLC | Office Lease |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | $ 800,000 | 800,000 | $ 1,700,000 | 1,700,000 |  |
I Health, Inc. |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Equity interest (as a percent) | 25.00% |  | 25.00% |  | 25.00% |
I Health, Inc. | Related Party |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Incurred expenses | $ 600,000 |  | $ 600,000 |  |  |
PMIOC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Equity interest (as a percent) | 40.00% |  | 40.00% |  |  |
PMIOC | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | $ 600,000 | 500,000 | $ 1,400,000 | 1,100,000 |  |
Song PC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Equity interest (as a percent) | 25.00% |  | 25.00% |  |  |
Song PC | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | $ 200,000 | $ 200,000 | $ 500,000 | $ 400,000 |  |

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