Description of Business and Summary of Significant Accounting Policies - Components of Other Insurance Liabilities, Current (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Description of Business and Summary of Significant Accounting Policies
Ceded reinsurance premiums payable	$ 33,268	$ 22,523
Advance premiums	12,721	4,277
Commissions payable, reinsurers and agents	12,414	10,697
Funds held under reinsurance treaty	1,959	2,206
General and accrued expenses payable	1,154	321
Other insurance liabilities, current	$ 61,516	$ 40,024