Summary of Significant Accounting Policies - Schedule of Earned Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Earned premiums	$ 918,043	$ 621,556
Premium
Disaggregation of Revenue [Line Items]
Earned premiums	916,622	619,722
Capitation
Disaggregation of Revenue [Line Items]
Earned premiums	$ 1,421	$ 1,834