Description of Business and Summary of Significant Accounting Policies - Other Insurance Liabilities, Current (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Ceded reinsurance premiums payable	$ 41,889	$ 10,500
Commissions payable, reinsurers and agents	8,141	4,650
Advance premiums	18,244	5,975
Funds held under reinsurance treaty	4,339	9,820
General and accrued expenses payable	1,140	640
Other insurance liabilities, current	$ 73,753	$ 31,585