|
Investments (Summary Of Gross Unrealized Investment Losses By Length Of Time That Securities Have Continuously Been In An Unrealized Loss Position) (Details) (USD $)
In Thousands, unless otherwise specified
|
Sep. 30, 2012
|
Dec. 31, 2011
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
$ 261,212 |
$ 542,101 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(17,024) |
(15,315) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
9,993 |
45,786 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
(507) |
(2,355) |
| Available-for-sale securities, estimated fair value |
271,205 |
587,887 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(17,531) |
(17,670) |
|
U.S. Treasury Securities And Obligations Of U.S. Government Agencies [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
|
32,384 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
|
(9) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
|
0 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
|
0 |
| Available-for-sale securities, estimated fair value |
|
32,384 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
|
(9) |
|
Obligations Of States, Municipalities And Political Subdivisions [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
2,114 |
1,016 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(50) |
(2) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
3,873 |
17,261 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
(291) |
(792) |
| Available-for-sale securities, estimated fair value |
5,987 |
18,277 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(341) |
(794) |
|
Foreign Governments [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
14,530 |
40,340 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(1) |
(1,068) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
0 |
0 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
0 |
0 |
| Available-for-sale securities, estimated fair value |
14,530 |
40,340 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(1) |
(1,068) |
|
Residential Mortgage-Backed Securities [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
560 |
489 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(2,259) |
(2,263) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
249 |
2,045 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
(2) |
(13) |
| Available-for-sale securities, estimated fair value |
809 |
2,534 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(2,261) |
(2,276) |
|
Asset-Backed Securities [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
|
0 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
|
0 |
| Available-for-sale securities, estimated fair value, 12 months or longer |
|
32 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
|
(9) |
| Available-for-sale securities, estimated fair value |
|
32 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
|
(9) |
|
All Other Corporate Bonds [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
0 |
74,812 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(6,791) |
(7,829) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
3,900 |
7,923 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
(79) |
(1,535) |
| Available-for-sale securities, estimated fair value |
3,900 |
82,735 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(6,870) |
(9,364) |
|
Total Fixed Maturities [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
17,204 |
149,041 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(9,101) |
(11,171) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
8,022 |
27,261 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
(372) |
(2,349) |
| Available-for-sale securities, estimated fair value |
25,226 |
176,302 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(9,473) |
(13,520) |
|
Insurance Companies, Banks And Trusts [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
18,449 |
26,514 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(1,798) |
(1,366) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
0 |
0 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
0 |
0 |
| Available-for-sale securities, estimated fair value |
18,449 |
26,514 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(1,798) |
(1,366) |
|
Industrial, Consumer And All Other [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
64,568 |
70,555 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(6,123) |
(2,774) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
1,971 |
18,525 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
(135) |
(6) |
| Available-for-sale securities, estimated fair value |
66,539 |
89,080 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(6,258) |
(2,780) |
|
Total Equity Securities [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
83,017 |
97,069 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(7,921) |
(4,140) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
1,971 |
18,525 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
(135) |
(6) |
| Available-for-sale securities, estimated fair value |
84,988 |
115,594 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
(8,056) |
(4,146) |
|
Short-Term Investments [Member]
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale securities, estimated fair value, less than 12 months |
160,991 |
295,991 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, less than 12 months |
(2) |
(4) |
| Available-for-sale securities, estimated fair value, 12 months or longer |
0 |
0 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses, 12 months or longer |
0 |
0 |
| Available-for-sale securities, estimated fair value |
160,991 |
295,991 |
| Available-for-sale securities, gross unrealized holding and other-than-temporary impairment losses |
$ (2) |
$ (4) |