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INVESTMENTS (DETAILS 2) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Due in one year or less (amortized cost) | $ 313,287 | $ 291,368
Due after one year through five years (amortized cost) | 3,906,190 | 4,217,515
Due after five years through ten years (amortized cost) | 2,546,299 | 2,263,684
Due after ten years (amortized cost) | 326,206 | 312,431
Total fixed maturities with a single maturity date (amortized cost) | 7,091,982 | 7,084,998
Total (amortized cost) | 11,523,316 | 11,897,639
Due in one year or less (fair value) | 305,972 | 289,571
Due after one year through five years (fair value) | 3,850,149 | 4,142,802
Due after five years through ten years (fair value) | 2,510,975 | 2,181,525
Due after ten years (fair value) | 319,511 | 301,039
Total fixed maturities with a single maturity date (fair value) | 6,986,607 | 6,914,937
Fair Value (fixed maturities) | $ 11,397,114 | $ 11,719,749
Due in one year or less (% of total fair value) | 2.80% | 2.50%
Due after one year through five years (% of total fair value) | 33.80% | 35.30%
Due after five years through ten years (% of total fair value) | 22.00% | 18.60%
Due after ten years (% of total fair value) | 2.80% | 2.60%
Fixed maturities with a single maturity date (% of total fair value) | 61.40% | 59.00%
Total | 100.00% | 100.00%
Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | $ 2,487,837 | $ 2,236,138
Total (amortized cost) | 2,487,837 | 2,236,138
Fixed maturities without a single maturity date (fair value) | 2,465,135 | 2,249,236
Fair Value (fixed maturities) | $ 2,465,135 | $ 2,249,236
Fixed maturities without a single maturity date (% of total fair value) | 21.60% | 19.20%
CMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | $ 664,368 | $ 1,088,595
Total (amortized cost) | 664,368 | 1,088,595
Fixed maturities without a single maturity date (fair value) | 666,237 | 1,083,298
Fair Value (fixed maturities) | $ 666,237 | $ 1,083,298
Fixed maturities without a single maturity date (% of total fair value) | 5.80% | 9.20%
Non-Agency RMBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | $ 57,316 | $ 99,989
Total (amortized cost) | 57,316 | 99,989
Fixed maturities without a single maturity date (fair value) | 56,921 | 101,008
Fair Value (fixed maturities) | $ 56,921 | $ 101,008
Fixed maturities without a single maturity date (% of total fair value) | 0.50% | 0.90%
ABS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Fixed maturities without a single maturity date (amortized cost) | $ 1,221,813 | $ 1,387,919
Total (amortized cost) | 1,221,813 | 1,387,919
Fixed maturities without a single maturity date (fair value) | 1,222,214 | 1,371,270
Fair Value (fixed maturities) | $ 1,222,214 | $ 1,371,270
Fixed maturities without a single maturity date (% of total fair value) | 10.70% | 11.70%

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