v2.4.0.8

Investments (Details 1) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012
--- | --- | ---
U.S. Treasury obligations [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | $ 206,778 | $ 191,642
Due in one year or less | 24,239 |
Due after one year through five years | 135,973 |
Due after five years through ten years | 49,745 |
Due after ten years | 3,865 |
Total Fair Value | 213,822 | 205,857
U.S. Government-sponsored enterprise obligations [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 53,486 | 52,110
Due in one year or less | 0 |
Due after one year through five years | 49,356 |
Due after five years through ten years | 7,340 |
Due after ten years | 229 |
Total Fair Value | 56,925 | 56,947
State and municipal bonds [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 1,204,739 | 1,134,744
Due in one year or less | 52,665 |
Due after one year through five years | 418,391 |
Due after five years through ten years | 493,559 |
Due after ten years | 288,557 |
Total Fair Value | 1,253,172 | 1,219,979
Corporate debt [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 1,502,700 | 1,375,880
Due in one year or less | 104,583 |
Due after one year through five years | 702,834 |
Due after five years through ten years | 685,649 |
Due after ten years | 53,826 |
Total Fair Value | 1,546,892 | 1,470,524
Residential mortgage-backed securities [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 263,844 | 272,990
Total Fair Value | 272,233 | 289,850
Agency commercial mortgage-backed securities [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 43,696 | 57,234
Total Fair Value | 44,449 | 59,464
Other commercial mortgage-backed securities [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 67,861 | 69,062
Total Fair Value | 70,865 | 74,106
Other asset-backed securities [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 75,843 | 70,670
Total Fair Value | 76,075 | 71,272
Debt Securities [Member] |  |
Fixed maturities, available for sale |  |
Amortized Cost | 3,418,947 | 3,224,332
Total Fair Value | $ 3,534,433 | $ 3,447,999

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