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FAIR VALUE MEASUREMENTS (Changes in Level 3 for Financial Instruments) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | $ 91,093 | $ 59,283
Transfers into Level 3 | 6,184 | 9,185
Transfers out of Level 3 | (9,203) | 0
Included in net income | 19,049 | (767)
Included in OCI | (56) | (498)
Purchases | 273 | 427
Sales | (26,980) | 0
Settlements/ distributions | (1,823) | (1,259)
Closing balance | 78,537 | 66,371
Change in unrealized investment gains/(losses) | 1,668 | (767)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 9,122 | 9,672
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | (660) | 10,492
Included in OCI | 0 | 0
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | 0 | 0
Closing balance | 8,462 | 20,164
Change in unrealized investment gains/(losses) | (660) | 10,492
Other liabilities | Derivative instruments |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 9,122 | 9,672
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | (660) | 10,492
Included in OCI | 0 | 0
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | 0 | 0
Closing balance | 8,462 | 20,164
Change in unrealized investment gains/(losses) | (660) | 10,492
Fixed maturities, available for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 14,909 | 8,021
Transfers into Level 3 | 6,184 | 9,185
Transfers out of Level 3 | (9,203) | 0
Included in net income | 0 | 0
Included in OCI | (56) | (498)
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | (1,349) | (571)
Closing balance | 10,485 | 16,137
Change in unrealized investment 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 | 2,504 | 2,297
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 0 | 0
Included in OCI | (99) | (52)
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | 0 | 0
Closing balance | 2,405 | 2,245
Change in unrealized investment gains/(losses) | 0 | 0
Fixed maturities, available for sale | CMBS |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 1,740 | 5,235
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 0 | 0
Included in OCI | 14 | (293)
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | (849) | (571)
Closing balance | 905 | 4,371
Change in unrealized investment gains/(losses) | 0 | 0
Fixed maturities, available for sale | Non-agency RMBS |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 0 | 0
Transfers into Level 3 | 0 | 9,185
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 | 0
Closing balance | 0 | 9,185
Change in unrealized investment 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 | 10,665 | 489
Transfers into Level 3 | 6,184 | 0
Transfers out of Level 3 | (9,203) | 0
Included in net income | 0 | 0
Included in OCI | 29 | (153)
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | (500) | 0
Closing balance | 7,175 | 336
Change in unrealized investment gains/(losses) | 0 | 0
Other investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 76,184 | 51,262
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 19,049 | (767)
Included in OCI | 0 | 0
Purchases | 273 | 427
Sales | (26,980) | 0
Settlements/ distributions | (474) | (688)
Closing balance | 68,052 | 50,234
Change in unrealized investment gains/(losses) | 1,668 | (767)
Other investments | CLO-Equities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 6,173 | 14,328
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 570 | (847)
Included in OCI | 0 | 0
Purchases | 0 | 0
Sales | 0 | 0
Settlements/ distributions | (474) | (688)
Closing balance | 6,269 | 12,793
Change in unrealized investment gains/(losses) | 570 | (847)
Other investments | Other privately held investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Opening balance | 70,011 | 36,934
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Included in net income | 18,479 | 80
Included in OCI | 0 | 0
Purchases | 273 | 427
Sales | (26,980) | 0
Settlements/ distributions | 0 | 0
Closing balance | 61,783 | 37,441
Change in unrealized investment gains/(losses) | $ 1,098 | $ 80

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