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Investments - Schedule of Distribution of Maturities for Fixed Maturity Securities Available for Sale with Unrealized Losses (Details) (USD $)
In Thousands, unless otherwise specified
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Sep. 30, 2014
|
Dec. 31, 2013
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| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Due in one year or less, Fair value |
$ 132,753 |
|
| Due after one year through five years, Fair Value |
813,075 |
|
| Due after five years through ten years, Fair Value |
1,081,193 |
|
| Due after ten years, Fair Value |
488,244 |
|
| Securities with variable principal payments, Fair Value |
219,948 |
|
| Redeemable preferred stocks, Fair Value |
16,703 |
|
| Fair Value, Total |
378,227 |
635,806 |
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Fixed Maturity Securities Available For Sale With Unrealized Losses
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|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Due in one year or less, Fair value |
5,292 |
0 |
| Due after one year through five years, Fair Value |
16,116 |
29,812 |
| Due after five years through ten years, Fair Value |
264,400 |
417,859 |
| Due after ten years, Fair Value |
64,995 |
132,018 |
| Total fixed maturity securities, Fair Value |
350,803 |
579,689 |
| Securities with variable principal payments, Fair Value |
5,226 |
33,503 |
| Redeemable preferred stocks, Fair Value |
10,690 |
12,752 |
| Fair Value, Total |
366,719 |
625,944 |
| Due in one year or less, Gross Unrealized Losses |
1 |
0 |
| Due after one year through five years, Gross Unrealized Losses |
580 |
268 |
| Due after five years through ten years, Gross Unrealized Losses |
7,325 |
20,118 |
| Due after ten years, Gross Unrealized Losses |
3,633 |
7,740 |
| Total fixed maturity securities available for sale, Gross |
11,539 |
28,126 |
| Securities with variable principal payments, Gross Unrealized Losses |
149 |
917 |
| Redeemable preferred stocks, Gross Unrealized Losses |
948 |
2,392 |
| Gross, Total |
$ 12,636 |
$ 31,435 |