Regulatory Requirements and Restrictions - Summary of Required Ratio of Gross and Net Written Premium to Surplus (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
HCPCI [Member]
Statutory Accounting Practices [Line Items]
Premium to capital surplus ratio for gross written premiums	3.30	3.21	3.02
Premium to capital surplus ratio for net written premiums	1.66	2.01	1.84
TypTap [Member]
Statutory Accounting Practices [Line Items]
Premium to capital surplus ratio for gross written premiums	4.11	2.40	2.47
Premium to capital surplus ratio for net written premiums	2.34	1.61	1.50