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Statutory Accounting and Regulation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Insurance [Abstract]
Statutory capital and surplus balance	$ 125,777		$ 103,663
Statutory Net Income [Line Items]
Statutory net income (loss)	16,027	$ 2,125
Statutory capital and surplus balance	125,777		103,663
Statutory net income (loss)	16,027	2,125
American Coastal Insurance Company
Insurance [Abstract]
Statutory capital and surplus balance	101,811		77,511
Statutory Net Income [Line Items]
Statutory net income (loss)	18,230	6,110
Statutory capital and surplus balance	101,811		77,511
Statutory net income (loss)	18,230	6,110
Interboro Insurance
Insurance [Abstract]
Statutory capital and surplus balance	23,966		26,152
Statutory Net Income [Line Items]
Statutory net income (loss)	(2,203)	(3,985)
Statutory capital and surplus balance	23,966		$ 26,152
Statutory net income (loss)	$ (2,203)	$ (3,985)

X

- Definition

Statutory Net Income [Line Items]

+ References

No definition available.

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- References

No definition available.

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X

- Definition

The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 944
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479989/944-505-50-1

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- Definition

Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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