Summary of Significant Accounting Policies - Schedule of Amounts Refundable to or Recoverable from CMS including Risk Corridor (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Accounts receivable	$ 153,904	$ 119,749
Risk Corridor
Current assets:
Accounts receivable	10,427	1,120
Prepaid expenses and other current assets	0	0
Current liabilities:
Medical expenses payable	0	16,776
CMS Subsidies
Current assets:
Accounts receivable	0	0
Prepaid expenses and other current assets	25,782	28,134
Current liabilities:
Medical expenses payable	$ 24,993	$ 5,302