Summary of Significant Accounting Policies - Insurance Risk - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Unpaid loss and settlement expenses	$ 2,693,470	$ 2,446,025	$ 2,315,637	$ 2,043,555