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FAIR VALUE MEASUREMENTS (Changes in Level 3 for Financial Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Total liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | $ 10,589 | $ 12,209 | $ 11,510 | $ 6,500
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in earnings | (377) | (291) | (1,298) | 9,991
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 12,135
Sales | 0 | 0 | 0 | 0
Settlements/ Distributions | 0 | (74) | 0 | (16,782)
Closing Balance | 10,212 | 11,844 | 10,212 | 11,844
Change in unrealized investment gain/loss relating to assets held at the reporting date | (377) | (291) | (1,298) | (291)
Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 61,605 | 74,319 | 52,897 | 96,400
Transfers into Level 3 | 8,163 | 0 | 11,688 | 1,536
Transfers out of Level 3 | (11,212) | (7,209) | (15,490) | (37,479)
Included in net income | (579) | (835) | (698) | (762)
Included in OCI | 4,906 | 1 | 5,921 | 1,118
Purchases | 13,871 | 24,007 | 34,171 | 58,588
Sales | (3,960) | (2,274) | (9,714) | (21,475)
Settlements/ Distributions | (5,266) | (2,978) | (11,247) | (12,895)
Closing Balance | 67,528 | 85,031 | 67,528 | 85,031
Change in unrealized investment gain/loss relating to assets held at the reporting date | 0 | 0 | 0 | 0
Other investments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 73,766 | 90,014 | 77,843 | 102,842
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 1,811 | 1,862 | 6,067 | 5,186
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 3,111 | 0
Sales | 0 | 0 | (1,500) | 0
Settlements/ Distributions | (3,924) | (11,696) | (13,868) | (27,848)
Closing Balance | 71,653 | 80,180 | 71,653 | 80,180
Change in unrealized investment gain/loss relating to assets held at the reporting date | 1,811 | 1,862 | 6,067 | 5,186
Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 0 | 25,047 | 25,090 | 27,555
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 0 | (71) | (90) | 606
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements/ Distributions | 0 | 0 | (25,000) | (3,185)
Closing Balance | 0 | 24,976 | 0 | 24,976
Change in unrealized investment gain/loss relating to assets held at the reporting date | 0 | (71) | 0 | (47)
Total assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 135,371 | 189,380 | 155,830 | 226,797
Transfers into Level 3 | 8,163 | 0 | 11,688 | 1,536
Transfers out of Level 3 | (11,212) | (7,209) | (15,490) | (37,479)
Included in net income | 1,232 | 956 | 5,279 | 5,030
Included in OCI | 4,906 | 1 | 5,921 | 1,118
Purchases | 13,871 | 24,007 | 37,282 | 58,588
Sales | (3,960) | (2,274) | (11,214) | (21,475)
Settlements/ Distributions | (9,190) | (14,674) | (50,115) | (43,928)
Closing Balance | 139,181 | 190,187 | 139,181 | 190,187
Change in unrealized investment gain/loss relating to assets held at the reporting date | 1,811 | 1,791 | 6,067 | 5,139
Corporate debt | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 42,553 | 68,320 | 52,897 | 75,875
Transfers into Level 3 | 1,346 | 0 | 2,935 | 1,536
Transfers out of Level 3 | 0 | (1,208) | (4,279) | (3,112)
Included in net income | (579) | (835) | (698) | (762)
Included in OCI | 4,962 | (9) | 5,977 | (392)
Purchases | 13,871 | 0 | 17,056 | 19,181
Sales | (3,960) | (2,274) | (9,714) | (21,475)
Settlements/ Distributions | (5,093) | (2,978) | (11,074) | (9,835)
Closing Balance | 53,100 | 61,016 | 53,100 | 61,016
Change in unrealized investment gain/loss relating to assets held at the reporting date | 0 | 0 | 0 | 0
Non-Agency RMBS | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 903 |  | 0 | 0
Transfers into Level 3 | 0 |  | 0 | 0
Transfers out of Level 3 | (790) |  | (789) | 0
Included in net income | 0 |  | 0 | 0
Included in OCI | (1) |  | 1 | 0
Purchases | 0 |  | 900 | 0
Sales | 0 |  | 0 | 0
Settlements/ Distributions | (112) |  | (112) | 0
Closing Balance | 0 | 0 | 0 | 0
Change in unrealized investment gain/loss relating to assets held at the reporting date | 0 |  | 0 | 0
CMBS | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 18,149 | 0 | 0 | 3,061
Transfers into Level 3 | 3,160 | 0 | 5,096 | 0
Transfers out of Level 3 | (10,422) | 0 | (10,422) | (9,418)
Included in net income | 0 | 0 | 0 | 0
Included in OCI | (55) | 0 | (57) | 17
Purchases | 0 | 0 | 16,215 | 9,400
Sales | 0 | 0 | 0 | 0
Settlements/ Distributions | (61) | 0 | (61) | (3,060)
Closing Balance | 10,771 | 0 | 10,771 | 0
Change in unrealized investment gain/loss relating to assets held at the reporting date | 0 | 0 | 0 | 0
ABS | Fixed maturities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 0 | 5,999 | 0 | 17,464
Transfers into Level 3 | 3,657 | 0 | 3,657 | 0
Transfers out of Level 3 | 0 | (6,001) | 0 | (24,949)
Included in net income | 0 | 0 | 0 | 0
Included in OCI | 0 | 10 | 0 | 1,493
Purchases | 0 | 24,007 | 0 | 30,007
Sales | 0 | 0 | 0 | 0
Settlements/ Distributions | 0 | 0 | 0 | 0
Closing Balance | 3,657 | 24,015 | 3,657 | 24,015
Change in unrealized investment gain/loss relating to assets held at the reporting date | 0 | 0 | 0 | 0
Other privately held investments | Other investments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 47,613 | 42,938 | 46,430 | 42,142
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | (224) | 460 | (652) | 1,256
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 3,111 | 0
Sales | 0 | 0 | (1,500) | 0
Settlements/ Distributions | 0 | 0 | 0 | 0
Closing Balance | 47,389 | 43,398 | 47,389 | 43,398
Change in unrealized investment gain/loss relating to assets held at the reporting date | (224) | 460 | (652) | 1,256
CLO-Equities | Other investments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 26,153 | 47,076 | 31,413 | 60,700
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 2,035 | 1,402 | 6,719 | 3,930
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements/ Distributions | (3,924) | (11,696) | (13,868) | (27,848)
Closing Balance | 24,264 | 36,782 | 24,264 | 36,782
Change in unrealized investment gain/loss relating to assets held at the reporting date | 2,035 | 1,402 | 6,719 | 3,930
Derivative instruments | Other liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 10,589 | 12,209 | 11,510 | 6,500
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in earnings | (377) | (291) | (1,298) | 9,991
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 12,135
Sales | 0 | 0 | 0 | 0
Settlements/ Distributions | 0 | (74) | 0 | (16,782)
Closing Balance | 10,212 | 11,844 | 10,212 | 11,844
Change in unrealized investment gain/loss relating to assets held at the reporting date | (377) | (291) | (1,298) | (291)
Derivative instruments | Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance |  | 0 |  | 2,532
Transfers into Level 3 |  | 0 |  | 0
Transfers out of Level 3 |  | 0 |  | 0
Included in net income |  | 0 |  | 653
Included in OCI |  | 0 |  | 0
Purchases |  | 0 |  | 0
Sales |  | 0 |  | 0
Settlements/ Distributions |  | 0 |  | (3,185)
Closing Balance |  | 0 |  | 0
Change in unrealized investment gain/loss relating to assets held at the reporting date |  | 0 |  | 0
Insurance-linked securities | Other assets |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Opening Balance | 0 | 25,047 | 25,090 | 25,023
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Included in net income | 0 | (71) | (90) | (47)
Included in OCI | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements/ Distributions | 0 | 0 | (25,000) | 0
Closing Balance | 0 | 24,976 | 0 | 24,976
Change in unrealized investment gain/loss relating to assets held at the reporting date | $ 0 | $ (71) | $ 0 | $ (47)

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