Regulatory Requirements and Restrictions - Summary of Required Ratio of Gross and Net Written Premium to Surplus (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
HCPCI [Member]
Statutory Accounting Practices [Line Items]
Premium to capital surplus ratio for gross written premiums	4.14	3.3	3.21
Premium to capital surplus ratio for net written premiums	2.69	1.66	2.01
TypTap
Statutory Accounting Practices [Line Items]
Premium to capital surplus ratio for gross written premiums	3.56	4.11	2.4
Premium to capital surplus ratio for net written premiums	2.26	2.34	1.61