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Pension And Other Post-Retirement Benefits (Tables) | 3 Months Ended
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Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract] |
Schedule Of Components Of Net Periodic Benefit Cost For Pension And Other Post-Retirement Benefit Programs | The components of net periodic benefit cost for our pension and other post-retirement benefit programs reflected in consolidated results are shown below:
| Pension Benefits |  | Other Post-Retirement Benefits
| Three Months Ended March 31, |  | Three Months Ended March 31,
(In Thousands) | 2015 |  | 2014 |  | 2015 |  | 2014
Service cost | $ | 144 |  |  | $ | 544 |  |  | $ | 12 |  |  | $ | 13 |
Interest cost | 3,312 |  |  | 3,341 |  |  | 84 |  |  | 93 |
Expected return on plan assets | (4,407 | ) |  | (4,558 | ) |  | — |  |  | — |
Amortization of prior service costs, (gains) losses and net transition asset | 4,024 |  |  | 2,814 |  |  | (40 | ) |  | (77 | )
Curtailment charge | — |  |  | 81 |  |  | — |  |  | — |
Net periodic benefit cost | $ | 3,073 |  |  | $ | 2,222 |  |  | $ | 56 |  |  | $ | 29 |

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