|
Investments - Schedule of Amortized Cost and Fair Value of Securities (Details) (USD $)
In Thousands, unless otherwise specified
|
Sep. 30, 2014
|
Dec. 31, 2013
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Securities, Amortized Cost |
$ 2,604,311 |
|
$ 2,517,309 |
|
| Gross Unrealized Gain |
185,744 |
|
158,308 |
|
| Gross Unrealized Loss |
13,413 |
|
33,881 |
|
| Fixed maturity securities available for sale, at fair value |
2,751,916 |
|
2,618,620 |
|
| Equity securities available for sale, at fair value |
24,726 |
|
23,116 |
|
| Fair value |
2,776,642 |
|
2,641,736 |
|
|
U.S. Treasury securities and obligations of U.S. Government
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
163,424 |
|
134,198 |
|
| Gross Unrealized Gain |
8,379 |
|
6,653 |
|
| Gross Unrealized Loss |
368 |
|
1,831 |
|
| Fixed maturity securities available for sale, at fair value |
171,435 |
|
139,020 |
|
|
Federal agencies
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
19,765 |
[1] |
19,756 |
[1] |
| Gross Unrealized Gain |
2,458 |
[1] |
2,312 |
[1] |
| Gross Unrealized Loss |
0 |
[1] |
0 |
[1] |
| Fixed maturity securities available for sale, at fair value |
22,223 |
[1] |
22,068 |
[1] |
|
Federal agency issued residential mortgage-backed securities
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
46,736 |
[1] |
56,738 |
[1] |
| Gross Unrealized Gain |
4,823 |
[1] |
5,392 |
[1] |
| Gross Unrealized Loss |
2 |
[1] |
2 |
[1] |
| Fixed maturity securities available for sale, at fair value |
51,557 |
[1] |
62,128 |
[1] |
|
US treasury securities, subtotal
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
229,925 |
|
210,692 |
|
| Gross Unrealized Gain |
15,660 |
|
14,357 |
|
| Gross Unrealized Loss |
370 |
|
1,833 |
|
| Fixed maturity securities available for sale, at fair value |
245,215 |
|
223,216 |
|
|
Industrial
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
529,296 |
|
515,395 |
|
| Gross Unrealized Gain |
32,223 |
|
27,051 |
|
| Gross Unrealized Loss |
2,374 |
|
7,667 |
|
| Fixed maturity securities available for sale, at fair value |
559,145 |
|
534,779 |
|
|
Energy
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
225,524 |
|
211,115 |
|
| Gross Unrealized Gain |
16,083 |
|
15,462 |
|
| Gross Unrealized Loss |
2,210 |
|
3,832 |
|
| Fixed maturity securities available for sale, at fair value |
239,397 |
|
222,745 |
|
|
Communications and technology
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
227,580 |
|
222,277 |
|
| Gross Unrealized Gain |
16,362 |
|
12,938 |
|
| Gross Unrealized Loss |
513 |
|
1,672 |
|
| Fixed maturity securities available for sale, at fair value |
243,429 |
|
233,543 |
|
|
Financial
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
275,575 |
|
266,693 |
|
| Gross Unrealized Gain |
19,010 |
|
18,824 |
|
| Gross Unrealized Loss |
842 |
|
2,040 |
|
| Fixed maturity securities available for sale, at fair value |
293,743 |
|
283,477 |
|
|
Consumer
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
512,689 |
|
473,627 |
|
| Gross Unrealized Gain |
27,705 |
|
25,936 |
|
| Gross Unrealized Loss |
2,093 |
|
5,807 |
|
| Fixed maturity securities available for sale, at fair value |
538,301 |
|
493,756 |
|
|
Public utilities
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
238,974 |
|
228,551 |
|
| Gross Unrealized Gain |
26,376 |
|
24,780 |
|
| Gross Unrealized Loss |
320 |
|
954 |
|
| Fixed maturity securities available for sale, at fair value |
265,030 |
|
252,377 |
|
|
Corporate obligations, subtotal
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
2,009,638 |
|
1,917,658 |
|
| Gross Unrealized Gain |
137,759 |
|
124,991 |
|
| Gross Unrealized Loss |
8,352 |
|
21,972 |
|
| Fixed maturity securities available for sale, at fair value |
2,139,045 |
|
2,020,677 |
|
|
Corporate private-labeled residential mortgage-backed securities
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
95,565 |
|
114,219 |
|
| Gross Unrealized Gain |
5,008 |
|
3,179 |
|
| Gross Unrealized Loss |
144 |
|
916 |
|
| Fixed maturity securities available for sale, at fair value |
100,429 |
|
116,482 |
|
|
Municipal securities
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
135,118 |
|
138,136 |
|
| Gross Unrealized Gain |
19,064 |
|
9,488 |
|
| Gross Unrealized Loss |
4 |
|
5 |
|
| Fixed maturity securities available for sale, at fair value |
154,178 |
|
147,619 |
|
|
Other
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
92,918 |
|
97,769 |
|
| Gross Unrealized Gain |
6,246 |
|
4,422 |
|
| Gross Unrealized Loss |
2,818 |
|
4,317 |
|
| Fixed maturity securities available for sale, at fair value |
96,346 |
|
97,874 |
|
|
Redeemable preferred stocks
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
17,481 |
|
15,144 |
|
| Gross Unrealized Gain |
170 |
|
0 |
|
| Gross Unrealized Loss |
948 |
|
2,392 |
|
| Fixed maturity securities available for sale, at fair value |
16,703 |
|
12,752 |
|
|
Fixed maturity securities
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Debt Securities, Amortized Cost Basis |
2,580,645 |
|
2,493,618 |
|
| Gross Unrealized Gain |
183,907 |
|
156,437 |
|
| Gross Unrealized Loss |
12,636 |
|
31,435 |
|
| Fixed maturity securities available for sale, at fair value |
2,751,916 |
|
2,618,620 |
|
|
Equity securities
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Available-for-sale Equity Securities, Amortized Cost Basis |
23,666 |
|
23,691 |
|
| Gross Unrealized Gain |
1,837 |
|
1,871 |
|
| Gross Unrealized Loss |
777 |
|
2,446 |
|
| Equity securities available for sale, at fair value |
$ 24,726 |
|
$ 23,116 |
|
|
|
|