|
Accumulated Other Comprehensive Income (Schedule of Reclassifications) (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
| Revenues |
$ 677,005 |
$ 735,971 |
| Benefit from income taxes |
3,396 |
43,611 |
| Net loss |
(113,195) |
(124,139) |
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments [Member] |
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
| Revenues |
481 |
303 |
| Benefit from income taxes |
(174) |
(109) |
| Net loss |
307 |
194 |
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension, Postretirement and Other Postemployment Benefits [Member] |
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
| Amortization of prior service credits |
2,084 |
2,626 |
| Amortization of actuarial gains (losses), net |
(2,378) |
(779) |
| Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax |
(294) |
1,847 |
| Benefit from income taxes |
105 |
(665) |
| Net of tax |
(189) |
1,182 |
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Available-for-Sale Securities [Member] |
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
| Benefit from income taxes |
1,007 |
200 |
| Net loss |
(1,790) |
(356) |
| Interest and investment income |
$ (2,797) |
$ (556) |