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FAIR VALUE MEASUREMENTS - Changes in Level 3 for Financial Instruments (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | $ 239,453,000 | $ 228,342,000
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 4,790,000 | 894,000
Included in OCI | 668,000 | (495,000)
Purchases | 19,664,000 | 11,469,000
Sales | (670,000) | 0
Settlements/ distributions | 0 | (12,494,000)
Closing balance | 263,905,000 | 227,716,000
Change in unrealized gains/(losses) | 4,790,000 | 1,728,000
Transfers out of Level 3 into Level 2 | 0 | 0
Fixed maturities, available for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 147,223,000 | 135,753,000
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 0 | (834,000)
Included in OCI | 668,000 | (495,000)
Purchases | 19,664,000 | 4,231,000
Sales | (670,000) | 0
Settlements/ distributions | 0 | (12,180,000)
Closing balance | 166,885,000 | 126,475,000
Change in unrealized gains/(losses) | 0 | 0
Fixed maturities, available for sale | Corporate debt |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 126,391,000 | 135,753,000
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 0 | (834,000)
Included in OCI | 357,000 | (495,000)
Purchases | 7,664,000 | 4,231,000
Sales | (670,000) | 0
Settlements/ distributions | 0 | (12,180,000)
Closing balance | 133,742,000 | 126,475,000
Change in unrealized gains/(losses) | 0 | 0
Fixed maturities, available for sale | ABS |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 20,832,000 | 0
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 0 | 0
Included in OCI | 311,000 | 0
Purchases | 12,000,000 | 0
Sales | 0 | 0
Settlements/ distributions | 0 | 0
Closing balance | 33,143,000 | 0
Change in unrealized gains/(losses) | 0 | 0
Other investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 92,230,000 | 92,589,000
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 4,790,000 | 1,728,000
Included in OCI | 0 | 0
Purchases | 0 | 7,238,000
Sales | 0 | 0
Settlements/ distributions | 0 | (314,000)
Closing balance | 97,020,000 | 101,241,000
Change in unrealized gains/(losses) | 4,790,000 | 1,728,000
Other investments | CLO-Equities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 0 | 5,300,000
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 0 | 0
Included in OCI | 0 | 0
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | 0 | (314,000)
Closing balance | 0 | 4,986,000
Change in unrealized gains/(losses) | 0 | 0
Other investments | Other privately held investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 92,230,000 | 87,289,000
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 4,790,000 | 1,728,000
Included in OCI | 0 | 0
Purchases | 0 | 7,238,000
Sales | 0 | 0
Settlements/ distributions | 0 | 0
Closing balance | 97,020,000 | 96,255,000
Change in unrealized gains/(losses) | $ 4,790,000 | $ 1,728,000

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