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Pension And Other Post-Retirement Benefits (Tables) | 6 Months Ended
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Jun. 30, 2016
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 June 30, |  | Three Months Ended June 30,
(In Thousands) | 2016 |  | 2015 |  | 2016 |  | 2015
Service cost | $ | 52 |  |  | $ | 144 |  |  | $ | 10 |  |  | $ | 12 |
Interest cost | 3,365 |  |  | 3,313 |  |  | 84 |  |  | 83 |
Expected return on plan assets | (3,979 | ) |  | (4,407 | ) |  | — |  |  | — |
Amortization of prior service costs, gains or losses and net transition asset | 3,384 |  |  | 4,024 |  |  | (47 | ) |  | (40 | )
Net periodic benefit cost | $ | 2,822 |  |  | $ | 3,074 |  |  | $ | 47 |  |  | $ | 55 |
| Pension Benefits |  | Other Post-Retirement Benefits
| Six Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Service cost | $ | 124 |  |  | $ | 288 |  |  | $ | 21 |  |  | $ | 24 |
Interest cost | 6,730 |  |  | 6,625 |  |  | 169 |  |  | 167 |
Expected return on plan assets | (7,957 | ) |  | (8,814 | ) |  | — |  |  | — |
Amortization of prior service costs, (gains) losses and net transition asset | 6,768 |  |  | 8,048 |  |  | (95 | ) |  | (80 | )
Net periodic benefit cost | $ | 5,665 |  |  | $ | 6,147 |  |  | $ | 95 |  |  | $ | 111 |

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