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GEOGRAPHICAL BREAKDOWN OF GROSS PREMIUMS WRITTEN (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Effects of Reinsurance [Line Items] |  |  |  |
Total | $ 346.2 | $ 308.2 | $ 757.0 | $ 638.9
Texas |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 70.8 | 61.7 | 145.9 | 123.3
Georgia |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 41.0 | 41.1 | 87.5 | 80.5
Florida |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 26.8 | 28.4 | 57.9 | 44.0
California |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 24.3 | 9.4 | 50.0 | 14.1
Pennsylvania |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 20.5 | 17.8 | 44.2 | 35.3
Colorado |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 18.6 | 17.3 | 40.5 | 35.5
South Carolina |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 10.2 | 9.6 | 28.0 | 31.6
Arizona |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 11.5 | 12.7 | 25.1 | 26.6
Nevada |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 8.1 | 4.5 | 20.3 | 8.9
Oklahoma |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | 8.0 | 6.5 | 18.0 | 15.1
All others states |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Total | $ 106.4 | $ 99.2 | $ 239.6 | $ 224.0
Geographic Concentration Risk | Gross Written Premiums | United States |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 100.00% | 100.00% | 100.00% | 100.00%
Geographic Concentration Risk | Gross Written Premiums | Texas |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 20.50% | 20.00% | 19.30% | 19.30%
Geographic Concentration Risk | Gross Written Premiums | Georgia |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 11.80% | 13.30% | 11.60% | 12.60%
Geographic Concentration Risk | Gross Written Premiums | Florida |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 7.70% | 9.20% | 7.60% | 6.90%
Geographic Concentration Risk | Gross Written Premiums | California |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 7.00% | 3.00% | 6.60% | 2.20%
Geographic Concentration Risk | Gross Written Premiums | Pennsylvania |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 5.90% | 5.80% | 5.80% | 5.50%
Geographic Concentration Risk | Gross Written Premiums | Colorado |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 5.40% | 5.60% | 5.40% | 5.60%
Geographic Concentration Risk | Gross Written Premiums | South Carolina |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 3.00% | 3.10% | 3.70% | 4.90%
Geographic Concentration Risk | Gross Written Premiums | Arizona |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 3.30% | 4.10% | 3.30% | 4.20%
Geographic Concentration Risk | Gross Written Premiums | Nevada |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 2.30% | 1.50% | 2.70% | 1.40%
Geographic Concentration Risk | Gross Written Premiums | Oklahoma |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 2.30% | 2.10% | 2.40% | 2.40%
Geographic Concentration Risk | Gross Written Premiums | All others states |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Concentration percentage (in percent) | 30.80% | 32.30% | 31.60% | 35.00%

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