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FAIR VALUE MEASUREMENTS (Changes in Level 3 for Financial Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Total liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | $ 10,233 | $ 10,942 | $ 10,299 | $ 11,510
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 29 | (353) | (37) | (921)
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements/ distributions | 0 | 0 | 0 | 0
Closing balance | 10,262 | 10,589 | 10,262 | 10,589
Change in unrealized investment gains/(losses) | 29 | (353) | (37) | (921)
Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 64,313 | 43,471 | 86,679 | 52,897
Transfers into Level 3 | 0 | 3,525 | 0 | 3,525
Transfers out of Level 3 | (11,564) | 0 | (32,733) | (4,279)
Included in net income | (763) | (1) | (1,459) | (119)
Included in OCI | 342 | (387) | 1,271 | 1,016
Purchases | 0 | 20,300 | 9,750 | 20,300
Sales | (31) | (3,218) | (5,578) | (5,754)
Settlements/ distributions | (2,777) | (2,085) | (8,410) | (5,981)
Closing balance | 49,520 | 61,605 | 49,520 | 61,605
Change in unrealized investment gains/(losses) | 0 | 0 | 0 | 0
Other investments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 65,707 | 77,343 | 65,789 | 77,843
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 15,027 | 1,894 | 16,109 | 4,256
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 2,500 | 3,111
Sales | (33,427) | 0 | (33,427) | (1,500)
Settlements/ distributions | (1,057) | (5,471) | (4,721) | (9,944)
Closing balance | 46,250 | 73,766 | 46,250 | 73,766
Change in unrealized investment gains/(losses) | 1,600 | 1,894 | 2,682 | 4,256
Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance |  | 25,000 |  | 25,090
Transfers into Level 3 |  | 0 |  | 0
Transfers out of Level 3 |  | 0 |  | 0
Included in net income |  | 0 |  | (90)
Included in OCI |  | 0 |  | 0
Purchases |  | 0 |  | 0
Sales |  | 0 |  | 0
Settlements/ distributions |  | (25,000) |  | (25,000)
Closing balance |  | 0 |  | 0
Change in unrealized investment gains/(losses) |  | 0 |  | 0
Total assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 130,020 | 145,814 | 152,468 | 155,830
Transfers into Level 3 | 0 | 3,525 | 0 | 3,525
Transfers out of Level 3 | (11,564) | 0 | (32,733) | (4,279)
Included in net income | 14,264 | 1,893 | 14,650 | 4,047
Included in OCI | 342 | (387) | 1,271 | 1,016
Purchases | 0 | 20,300 | 12,250 | 23,411
Sales | (33,458) | (3,218) | (39,005) | (7,254)
Settlements/ distributions | (3,834) | (32,556) | (13,131) | (40,925)
Closing balance | 95,770 | 135,371 | 95,770 | 135,371
Change in unrealized investment gains/(losses) | 1,600 | 1,894 | 2,682 | 4,256
Corporate debt | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 41,125 | 43,471 | 49,012 | 52,897
Transfers into Level 3 | 0 | 1,589 | 0 | 1,589
Transfers out of Level 3 | 0 | 0 | 0 | (4,279)
Included in net income | (763) | (1) | (1,459) | (119)
Included in OCI | 309 | (388) | 933 | 1,015
Purchases | 0 | 3,185 | 0 | 3,185
Sales | (31) | (3,218) | (5,578) | (5,754)
Settlements/ distributions | (1,503) | (2,085) | (3,771) | (5,981)
Closing balance | 39,137 | 42,553 | 39,137 | 42,553
Change in unrealized investment gains/(losses) | 0 | 0 | 0 | 0
Non-Agency RMBS | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance |  | 0 |  | 0
Transfers into Level 3 |  | 0 |  | 0
Transfers out of Level 3 |  | 0 |  | 0
Included in net income |  | 0 |  | 0
Included in OCI |  | 3 |  | 3
Purchases |  | 900 |  | 900
Sales |  | 0 |  | 0
Settlements/ distributions |  | 0 |  | 0
Closing balance |  | 903 |  | 903
Change in unrealized investment gains/(losses) |  | 0 |  | 0
CMBS | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 11,145 | 0 | 19,134 | 0
Transfers into Level 3 | 0 | 1,936 | 0 | 1,936
Transfers out of Level 3 | 0 | 0 | (4,767) | 0
Included in net income | 0 | 0 | 0 | 0
Included in OCI | 21 | (2) | 164 | (2)
Purchases | 0 | 16,215 | 0 | 16,215
Sales | 0 | 0 | 0 | 0
Settlements/ distributions | (1,274) | 0 | (4,639) | 0
Closing balance | 9,892 | 18,149 | 9,892 | 18,149
Change in unrealized investment gains/(losses) | 0 | 0 | 0 | 0
ABS | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 12,043 |  | 18,533 |
Transfers into Level 3 | 0 |  | 0 |
Transfers out of Level 3 | (11,564) |  | (27,966) |
Included in net income | 0 |  | 0 |
Included in OCI | 12 |  | 174 |
Purchases | 0 |  | 9,750 |
Sales | 0 |  | 0 |
Settlements/ distributions | 0 |  | 0 |
Closing balance | 491 |  | 491 |
Change in unrealized investment gains/(losses) | 0 |  | 0 |
Other privately held investments | Other investments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 47,685 | 48,787 | 44,518 | 46,430
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 14,194 | (1,174) | 14,861 | (428)
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 2,500 | 3,111
Sales | (33,427) | 0 | (33,427) | (1,500)
Settlements/ distributions | 0 | 0 | 0 | 0
Closing balance | 28,452 | 47,613 | 28,452 | 47,613
Change in unrealized investment gains/(losses) | 767 | (1,174) | 1,434 | (428)
CLO-Equities | Other investments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 18,022 | 28,556 | 21,271 | 31,413
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 833 | 3,068 | 1,248 | 4,684
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements/ distributions | (1,057) | (5,471) | (4,721) | (9,944)
Closing balance | 17,798 | 26,153 | 17,798 | 26,153
Change in unrealized investment gains/(losses) | 833 | 3,068 | 1,248 | 4,684
Derivative instruments | Other liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance | 10,233 | 10,942 | 10,299 | 11,510
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 29 | (353) | (37) | (921)
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements/ distributions | 0 | 0 | 0 | 0
Closing balance | 10,262 | 10,589 | 10,262 | 10,589
Change in unrealized investment gains/(losses) | $ 29 | (353) | $ (37) | (921)
Insurance-linked securities | Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening balance |  | 25,000 |  | 25,090
Transfers into Level 3 |  | 0 |  | 0
Transfers out of Level 3 |  | 0 |  | 0
Included in net income |  | 0 |  | (90)
Included in OCI |  | 0 |  | 0
Purchases |  | 0 |  | 0
Sales |  | 0 |  | 0
Settlements/ distributions |  | (25,000) |  | (25,000)
Closing balance |  | 0 |  | 0
Change in unrealized investment gains/(losses) |  | $ 0 |  | $ 0

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