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Reinsurance (Details) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2024 USD ($)
Catastrophe Excess of Loss |  |
Insurance [Abstract] |  |
First Event Retention Level | $ 20,500 | $ 20,500
Subsequent Event Retention Level | 13,000 | 13,000
Reinsurance Retention [Line Items] |  |
First Event Retention Level | 20,500 | 20,500
Subsequent Event Retention Level | 13,000 | 13,000
American Coastal Insurance Company | Catastrophe Excess of Loss |  |
Insurance [Abstract] |  |
Reinsurance Retention Policy, Excess Retention, Amount Reinsured |  | 1,260,000
Reinsurance, Excess Retention, Amount Reinsured, Per Policy | 1,610,000 |
Event Retention Level | 10,000 | 10,000
Reinsurance Retention [Line Items] |  |
Reinsurance Retention Policy, Excess Retention, Amount Reinsured |  | 1,260,000
Reinsurance, Excess Retention, Amount Reinsured, Per Policy | 1,610,000 |
Event Retention Level | 10,000 | 10,000
American Coastal Insurance Company | All Other Perilds Catastrophe Excess of Loss |  |
Insurance [Abstract] |  |
Reinsurance, Excess Retention, Amount Reinsured, Per Policy |  | 172,000
Reinsurance Retention [Line Items] |  |
Reinsurance, Excess Retention, Amount Reinsured, Per Policy |  | 172,000
UPC Re | Catastrophe Excess of Loss |  |
Insurance [Abstract] |  |
First Event Retention Level | 10,500 | 10,500
Subsequent Event Retention Level | 3,000 | 3,000
Reinsurance Retention [Line Items] |  |
First Event Retention Level | 10,500 | 10,500
Subsequent Event Retention Level | 3,000 | 3,000
Interboro Insurance | Catastrophe Excess of Loss |  |
Insurance [Abstract] |  |
Reinsurance, Excess Retention, Amount Reinsured, Per Policy | 82,500 |
Event Retention Level | 2,500 | 2,500
Reinsurance Retention [Line Items] |  |
Reinsurance, Excess Retention, Amount Reinsured, Per Policy | 82,500 |
Event Retention Level | $ 2,500 | $ 2,500

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- Definition Amount per event of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-3 + Details
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