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Investments (Details 1) $ in Thousands | Sep. 30, 2016 USD ($) Number | Dec. 31, 2015 USD ($) Number
--- | --- | ---
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | $ 487,399 | $ 2,304,060
Fixed maturity securities, Fair Value, More than 12 Months |  | 300,179 | 224,513
Fixed maturity securities, Fair Value, Total |  | 787,578 | 2,528,573
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 9,057 | 74,011
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 14,174 | 19,842
Fixed maturity securities, Gross Unrealized Losses, Total |  | $ 23,231 | $ 93,853
Number of positions with a gross unrealized loss position, 12 Months or Less | Number |  | 201 | 684
Number of position with a gross unrealized loss position, more than 12 months | Number |  | 107 | 78
Number of position with a gross unrealized loss position, Total | Number |  | 308 | 762
Fair value as a percentage of total fixed maturities and equity securities fair value, 12 Months or Less |  | 6.40% | 32.00%
Fair value as a percentage of total fixed maturities and equity securities fair value, more than 12 months |  | 3.90% | 3.10%
Fair value as a percentage of total fixed maturities and equity securities fair value, Total |  | 10.30% | 35.10%
Mortgage-backed securities [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | $ 9,701 | $ 48,097
Fixed maturity securities, Fair Value, More than 12 Months |  | 3,564 | 1,595
Fixed maturity securities, Fair Value, Total |  | 13,265 | 49,692
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 60 | 1,748
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 207 | 113
Fixed maturity securities, Gross Unrealized Losses, Total |  | 267 | 1,861
Other [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | 27,728 | 248,478
Fixed maturity securities, Fair Value, More than 12 Months |  | 0 | 1,921
Fixed maturity securities, Fair Value, Total |  | 27,728 | 250,399
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 272 | 7,338
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 0 | 77
Fixed maturity securities, Gross Unrealized Losses, Total |  | 272 | 7,415
Municipal bonds [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | 53,583 | 168,939
Fixed maturity securities, Fair Value, More than 12 Months |  | 16,768 | 21,717
Fixed maturity securities, Fair Value, Total |  | 70,351 | 190,656
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 879 | 5,382
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 3,891 | 4,958
Fixed maturity securities, Gross Unrealized Losses, Total |  | 4,770 | 10,340
Foreign government bonds [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | 0 | 11,867
Fixed maturity securities, Fair Value, More than 12 Months |  | 0 | 0
Fixed maturity securities, Fair Value, Total |  | 0 | 11,867
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 0 | 112
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 0 | 0
Fixed maturity securities, Gross Unrealized Losses, Total |  | 0 | 112
Corporate bonds [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | 114,009 | 858,647
Fixed maturity securities, Fair Value, More than 12 Months |  | 63,800 | 50,340
Fixed maturity securities, Fair Value, Total |  | 177,809 | 908,987
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 1,514 | 37,244
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 5,244 | 11,590
Fixed maturity securities, Gross Unrealized Losses, Total |  | 6,758 | 48,834
Other mortgage-backed securities [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | 266,884 | 929,268
Fixed maturity securities, Fair Value, More than 12 Months |  | 207,444 | 140,561
Fixed maturity securities, Fair Value, Total |  | 474,328 | 1,069,829
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 5,447 | 19,165
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 4,196 | 1,796
Fixed maturity securities, Gross Unrealized Losses, Total |  | 9,643 | 20,961
Total fixed maturity securities [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less |  | 471,905 | 2,265,296
Fixed maturity securities, Fair Value, More than 12 Months |  | 291,576 | 216,134
Fixed maturity securities, Fair Value, Total |  | 763,481 | 2,481,430
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less |  | 8,172 | 70,989
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months |  | 13,538 | 18,534
Fixed maturity securities, Gross Unrealized Losses, Total |  | 21,710 | 89,523
Equity securities [Member] |  |  |
Fixed maturity securities, Fair Value |  |  |
Fixed maturity securities, Fair Value, 12 Months or Less | [1] | 15,494 | 38,764
Fixed maturity securities, Fair Value, More than 12 Months | [1] | 8,603 | 8,379
Fixed maturity securities, Fair Value, Total | [1] | 24,097 | 47,143
Fixed maturity securities, Gross Unrealized Losses |  |  |
Fixed maturity securities, Gross Unrealized Losses, 12 Months or Less | [1] | 885 | 3,022
Fixed maturity securities, Gross Unrealized Losses, More than 12 Months | [1] | 636 | 1,308
Fixed maturity securities, Gross Unrealized Losses, Total | [1] | $ 1,521 | $ 4,330
[1] | Includes nonredeemable (perpetual) preferred stocks, common stocks and closed-end funds.

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