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Statutory Accounting and Regulation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Insurance [Abstract] |  |  |  |  |
Statutory capital and surplus balance | $ 209,205 |  | $ 209,205 |  | $ 166,113
Statutory Net Income [Line Items] |  |  |  |  |
Statutory net income (loss) | 16,515 | $ 40,605 | 41,139 | $ 56,632 |
Statutory capital and surplus balance | 209,205 |  | 209,205 |  | 166,113
Statutory net income (loss) | 16,515 | 40,605 | 41,139 | 56,632 |
American Coastal Insurance Company |  |  |  |  |
Insurance [Abstract] |  |  |  |  |
Statutory capital and surplus balance | 187,294 |  | 187,294 |  | 143,452
Statutory Net Income [Line Items] |  |  |  |  |
Statutory net income (loss) | 17,011 | 40,883 | 41,940 | 59,113 |
Statutory capital and surplus balance | 187,294 |  | 187,294 |  | 143,452
Statutory net income (loss) | 17,011 | 40,883 | 41,940 | 59,113 |
Interboro Insurance |  |  |  |  |
Insurance [Abstract] |  |  |  |  |
Statutory capital and surplus balance | 21,911 |  | 21,911 |  | 22,661
Statutory Net Income [Line Items] |  |  |  |  |
Statutory net income (loss) | (496) | (278) | (801) | (2,481) |
Statutory capital and surplus balance | 21,911 |  | 21,911 |  | $ 22,661
Statutory net income (loss) | $ (496) | $ (278) | $ (801) | $ (2,481) |

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- Definition Statutory Net Income [Line Items] + References No definition available. + Details
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- References No definition available. + Details
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- 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/1943274/2147478777/944-210-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/1943274/2147477908/944-505-50-1 + Details
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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/1943274/2147478777/944-210-S99-1 + Details
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- Details
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