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LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |
Decrease in liability for claims and claims adjustment expense reserve |  |  | $ 193,400,000 |  |  |  |  |
Unpaid losses and loss adjustment expenses | $ 765,855,000 | $ 344,648,000 | 765,855,000 | $ 344,648,000 | $ 893,677,000 | $ 959,291,000 | $ 429,629,000 | $ 510,117,000
Incurred related to prior years | 71,000 | 0 | 71,000 | 0 |  |  |  |
Increases in net losses and LAE |  |  |  |  |  |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |
Incurred related to prior years | $ 71,000 | $ 0 | $ 71,000 | $ 0 |  |  |  |

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