Fair Value of Financial Instruments - Summary Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Equity securities	$ 552	$ 558
Fixed maturity debt securities, including cash equivalents	74,528	117,972
Fair Value, Recurring
Assets:
Money market funds	0	0
Equity securities	552	558
Fixed maturity debt securities, including cash equivalents	118,347	135,346
Total Assets	118,899	135,904
Liabilities:
Merger warrants liability		6,291
Total Liabilities	8,341	13,970
Fair Value, Recurring | Merger warrants liability
Liabilities:
Merger warrants liability	4,691
Fair Value, Recurring | Earnout shares liability
Liabilities:
Earnout shares liability	3,650	7,679
Fair Value, Recurring | Level 1
Assets:
Money market funds	0	0
Equity securities	552	558
Fixed maturity debt securities, including cash equivalents	0	0
Total Assets	552	558
Liabilities:
Merger warrants liability		3,941
Total Liabilities	2,939	3,941
Fair Value, Recurring | Level 1 | Merger warrants liability
Liabilities:
Merger warrants liability	2,939
Fair Value, Recurring | Level 1 | Earnout shares liability
Liabilities:
Earnout shares liability	0	0
Fair Value, Recurring | Level 2
Assets:
Money market funds	0	0
Equity securities	0	0
Fixed maturity debt securities, including cash equivalents	118,347	135,346
Total Assets	118,347	135,346
Liabilities:
Merger warrants liability		2,350
Total Liabilities	1,752	2,350
Fair Value, Recurring | Level 2 | Merger warrants liability
Liabilities:
Merger warrants liability	1,752
Fair Value, Recurring | Level 2 | Earnout shares liability
Liabilities:
Earnout shares liability	0	0
Fair Value, Recurring | Level 3
Assets:
Money market funds	0	0
Equity securities	0	0
Fixed maturity debt securities, including cash equivalents	0	0
Total Assets	0	0
Liabilities:
Merger warrants liability		0
Total Liabilities	3,650	7,679
Fair Value, Recurring | Level 3 | Merger warrants liability
Liabilities:
Merger warrants liability	0
Fair Value, Recurring | Level 3 | Earnout shares liability
Liabilities:
Earnout shares liability	$ 3,650	$ 7,679