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Related-Party Transactions - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024 | Dec. 31, 2023
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | $ 478,710 | $ 348,173 | $ 1,369,331 | $ 1,033,625 |  |
Operating lease right-of-use assets | 33,119 |  | 33,119 |  |  | $ 37,396
Expenses payable | 400 | 500 | 2,100 | 900 |  |
Investments in privately held entities | 8,896 |  | 8,896 |  |  | 6,396
Operating lease liabilities | 5,241 |  | 5,241 |  |  | 4,607
Third Way Health | Agreement for Future Equity Fund |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Investments in privately held entities | 6,000 |  | 6,000 |  |  | 3,500
Risk pool settlements and incentives |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | 21,779 | 15,022 | 57,564 | 48,605 |  |
LMA | Related Party |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue |  | 4,300 |  | 16,200 |  |
First Commonwealth Property, LLC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets | 700 |  | 700 |  |  | 800
Operating lease liabilities | 800 |  | 800 |  |  | 800
Allied Pacific Holdings Investment Management, LLC | Chief Executive Officer |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets | 2,000 |  | 2,000 |  |  | 14,100
Operating lease liabilities | 2,000 |  | 2,000 |  |  | 14,500
AHMC |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Amount outstanding under agreement | 74,700 |  | 74,700 |  |  | $ 54,000
AHMC | Related Party | Risk pool settlements and incentives |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | 9,400 | 4,200 | 28,500 | 33,000 |  |
AHMC | Arroyo Vista | Related Party |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue | 400 | 500 | 1,500 | 1,300 |  |
APC | Board [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Payments for repurchase of shares | 700 |  | 700 | 9,500 |  |
APC | Sunny Village Care Center | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 100 | 200 | 300 | 1,000 |  |
APC | Board Members | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 4,600 | 11,600 | 14,100 | 30,500 |  |
APC | Board Members Who Are Also Officers | Provider Services |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 800 | 700 | 2,200 | 2,300 |  |
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 |  |  |
AMG | First Commonwealth Property, LLC | Office Lease |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | 100 | 100 | 100 | 100 |  |
AMG | Allied Pacific Holdings Investment Management, LLC | Office Lease |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Related party transaction, amount of transaction | $ 1,300 | 800 | $ 3,000 | 2,500 |  |
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 |  | $ 1,200 |  |  |
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 | $ 800 | 800 | $ 2,200 | 1,900 |  |
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 | $ 300 | $ 300 | $ 700 | $ 800 |  |

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