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INVESTMENTS (Details 3) $ in Thousands | Mar. 31, 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 | $ 590,420 | $ 971,489
Unrealized Losses - 12 months or greater | (48,386) | (77,645)
Fair Value - Less than 12 months | 5,029,407 | 5,833,715
Unrealized Losses - Less than 12 months | (81,508) | (119,550)
Total Fair Value of Securities in Unrealized Loss Position | 5,619,827 | 6,805,204
Total Unrealized Losses | $ (129,894) | $ (197,195)
Number of Available For Sale Securities In Unrealized Loss Positions | security | 1,674 | 1,881
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater | security | 238 | 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 | 54,215 | 54,051
Unrealized Losses - 12 months or greater | (2,278) | (2,729)
Fair Value - Less than 12 months | 1,097,124 | 1,340,719
Unrealized Losses - Less than 12 months | (15,738) | (24,275)
Total Fair Value of Securities in Unrealized Loss Position | 1,151,339 | 1,394,770
Total Unrealized Losses | (18,016) | (27,004)
Non-US Government [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 84,895 | 149,360
Unrealized Losses - 12 months or greater | (21,569) | (38,683)
Fair Value - Less than 12 months | 191,561 | 283,796
Unrealized Losses - Less than 12 months | (2,641) | (10,971)
Total Fair Value of Securities in Unrealized Loss Position | 276,456 | 433,156
Total Unrealized Losses | (24,210) | (49,654)
Corporate Debt [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 137,955 | 230,218
Unrealized Losses - 12 months or greater | (19,905) | (30,652)
Fair Value - Less than 12 months | 1,588,217 | 1,948,976
Unrealized Losses - Less than 12 months | (29,521) | (44,488)
Total Fair Value of Securities in Unrealized Loss Position | 1,726,172 | 2,179,194
Total Unrealized Losses | (49,426) | (75,140)
Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 73,078 | 76,694
Unrealized Losses - 12 months or greater | (1,022) | (1,101)
Fair Value - Less than 12 months | 1,619,979 | 1,724,170
Unrealized Losses - Less than 12 months | (29,673) | (34,876)
Total Fair Value of Securities in Unrealized Loss Position | 1,693,057 | 1,800,864
Total Unrealized Losses | (30,695) | (35,977)
CMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 53,070 | 84,640
Unrealized Losses - 12 months or greater | (1,043) | (749)
Fair Value - Less than 12 months | 210,308 | 193,499
Unrealized Losses - Less than 12 months | (2,372) | (2,815)
Total Fair Value of Securities in Unrealized Loss Position | 263,378 | 278,139
Total Unrealized Losses | (3,415) | (3,564)
Non-Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 13,195 | 13,642
Unrealized Losses - 12 months or greater | (1,483) | (1,752)
Fair Value - Less than 12 months | 6,917 | 7,194
Unrealized Losses - Less than 12 months | (159) | (271)
Total Fair Value of Securities in Unrealized Loss Position | 20,112 | 20,836
Total Unrealized Losses | (1,642) | (2,023)
ABS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 173,243 | 362,110
Unrealized Losses - 12 months or greater | (1,054) | (1,950)
Fair Value - Less than 12 months | 278,337 | 266,763
Unrealized Losses - Less than 12 months | (762) | (893)
Total Fair Value of Securities in Unrealized Loss Position | 451,580 | 628,873
Total Unrealized Losses | (1,816) | (2,843)
Municipals [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 769 | 774
Unrealized Losses - 12 months or greater | (32) | (29)
Fair Value - Less than 12 months | 36,964 | 68,598
Unrealized Losses - Less than 12 months | (642) | (961)
Total Fair Value of Securities in Unrealized Loss Position | 37,733 | 69,372
Total Unrealized Losses | (674) | (990)
Equity Securities [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | 12 | 4,959
Unrealized Losses - 12 months or greater | (70) | (461)
Fair Value - Less than 12 months | 126,849 | 211,751
Unrealized Losses - Less than 12 months | (7,066) | (11,607)
Total Fair Value of Securities in Unrealized Loss Position | 126,861 | 216,710
Total Unrealized Losses | $ (7,136) | $ (12,068)
Number of Available For Sale Securities In Unrealized Loss Positions | security | 3 | 23
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater | security | 1 | 3
Common Stock [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fair Value - 12 months or greater | $ 12 | $ 0
Unrealized Losses - 12 months or greater | (70) | 0
Fair Value - Less than 12 months | 27 | 37
Unrealized Losses - Less than 12 months | (270) | (342)
Total Fair Value of Securities in Unrealized Loss Position | 39 | 37
Total Unrealized Losses | (340) | (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 | 126,822 | 123,954
Unrealized Losses - Less than 12 months | (6,796) | (9,092)
Total Fair Value of Securities in Unrealized Loss Position | 126,822 | 123,954
Total Unrealized Losses | $ (6,796) | $ (9,092)

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