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INVESTMENTS (Details 3) $ in Thousands | Jun. 30, 2017 USD ($) security | Dec. 31, 2016 USD ($) security
--- | --- | ---
Fixed Maturities [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | $ 516,233 | $ 971,489
Unrealized Losses - 12 months or greater | (38,330) | (77,645)
Fair Value - Less than 12 months | 5,109,359 | 5,833,715
Unrealized Losses - Less than 12 months | (56,424) | (119,550)
Total Fair Value of Securities in Unrealized Loss Position | 5,625,592 | 6,805,204
Total Unrealized Losses | $ (94,754) | $ (197,195)
Number of Available For Sale Securities In Unrealized Loss Positions | security | 1,690 | 1,881
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater | security | 216 | 330
Fixed Maturities [Member] | Below Investment Grade or Not Rated [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Total Unrealized Losses | $ (7,000) | $ (15,000)
US Government and Agency [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 65,015 | 54,051
Unrealized Losses - 12 months or greater | (2,795) | (2,729)
Fair Value - Less than 12 months | 1,303,677 | 1,340,719
Unrealized Losses - Less than 12 months | (12,712) | (24,275)
Total Fair Value of Securities in Unrealized Loss Position | 1,368,692 | 1,394,770
Total Unrealized Losses | (15,507) | (27,004)
Non-US Government [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 103,740 | 149,360
Unrealized Losses - 12 months or greater | (16,923) | (38,683)
Fair Value - Less than 12 months | 180,768 | 283,796
Unrealized Losses - Less than 12 months | (1,356) | (10,971)
Total Fair Value of Securities in Unrealized Loss Position | 284,508 | 433,156
Total Unrealized Losses | (18,279) | (49,654)
Corporate Debt [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 163,247 | 230,218
Unrealized Losses - 12 months or greater | (14,667) | (30,652)
Fair Value - Less than 12 months | 1,532,619 | 1,948,976
Unrealized Losses - Less than 12 months | (17,543) | (44,488)
Total Fair Value of Securities in Unrealized Loss Position | 1,695,866 | 2,179,194
Total Unrealized Losses | (32,210) | (75,140)
Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 93,978 | 76,694
Unrealized Losses - 12 months or greater | (1,760) | (1,101)
Fair Value - Less than 12 months | 1,539,025 | 1,724,170
Unrealized Losses - Less than 12 months | (22,223) | (34,876)
Total Fair Value of Securities in Unrealized Loss Position | 1,633,003 | 1,800,864
Total Unrealized Losses | (23,983) | (35,977)
CMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 22,821 | 84,640
Unrealized Losses - 12 months or greater | (502) | (749)
Fair Value - Less than 12 months | 190,379 | 193,499
Unrealized Losses - Less than 12 months | (1,648) | (2,815)
Total Fair Value of Securities in Unrealized Loss Position | 213,200 | 278,139
Total Unrealized Losses | (2,150) | (3,564)
Non-Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 8,563 | 13,642
Unrealized Losses - 12 months or greater | (1,070) | (1,752)
Fair Value - Less than 12 months | 61 | 7,194
Unrealized Losses - Less than 12 months | (1) | (271)
Total Fair Value of Securities in Unrealized Loss Position | 8,624 | 20,836
Total Unrealized Losses | (1,071) | (2,023)
ABS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 58,106 | 362,110
Unrealized Losses - 12 months or greater | (576) | (1,950)
Fair Value - Less than 12 months | 318,030 | 266,763
Unrealized Losses - Less than 12 months | (424) | (893)
Total Fair Value of Securities in Unrealized Loss Position | 376,136 | 628,873
Total Unrealized Losses | (1,000) | (2,843)
Municipals [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 763 | 774
Unrealized Losses - 12 months or greater | (37) | (29)
Fair Value - Less than 12 months | 44,800 | 68,598
Unrealized Losses - Less than 12 months | (517) | (961)
Total Fair Value of Securities in Unrealized Loss Position | 45,563 | 69,372
Total Unrealized Losses | (554) | (990)
Equity Securities [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 40 | 4,959
Unrealized Losses - 12 months or greater | (128) | (461)
Fair Value - Less than 12 months | 28,156 | 211,751
Unrealized Losses - Less than 12 months | (1,615) | (11,607)
Total Fair Value of Securities in Unrealized Loss Position | 28,196 | 216,710
Total Unrealized Losses | $ (1,743) | $ (12,068)
Number of Available For Sale Securities In Unrealized Loss Positions | security | 45 | 23
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater | security | 2 | 3
Common Stock [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | $ 40 | $ 0
Unrealized Losses - 12 months or greater | (128) | 0
Fair Value - Less than 12 months | 4,438 | 37
Unrealized Losses - Less than 12 months | (437) | (342)
Total Fair Value of Securities in Unrealized Loss Position | 4,478 | 37
Total Unrealized Losses | (565) | (342)
Exchange-Traded Funds [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 0 | 4,959
Unrealized Losses - 12 months or greater | 0 | (461)
Fair Value - Less than 12 months | 0 | 87,760
Unrealized Losses - Less than 12 months | 0 | (2,173)
Total Fair Value of Securities in Unrealized Loss Position | 0 | 92,719
Total Unrealized Losses | 0 | (2,634)
Bond Mutual Funds [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 0 | 0
Unrealized Losses - 12 months or greater | 0 | 0
Fair Value - Less than 12 months | 23,718 | 123,954
Unrealized Losses - Less than 12 months | (1,178) | (9,092)
Total Fair Value of Securities in Unrealized Loss Position | 23,718 | 123,954
Total Unrealized Losses | $ (1,178) | $ (9,092)

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