Commitments and Contingencies - Schedule of Future Minimum Aggregate Premium Amounts Payable to Reinsurer (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Commitments And Contingencies Disclosure [Abstract]
2022	$ 9,095	[1]
2023	9,095	[1]
2024	2,728	[1]
Total	$ 20,918

[1] Premiums payable after May 31, 2022 are estimated.