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Pensions and Other Postretirement Benefits (Tables) | 3 Months Ended
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Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract] |
Components of Net Periodic Benefit Cost | Components of net periodic benefit cost consisted of the following:
|  | Pension Benefits |  | Other Benefits
(In thousands) |  | 2015 |  | 2014 |  | 2015 |  | 2014
Three Months Ended March 31, |  |  |  |  |  |  |  |
Service cost |  | $ | 2,904 |  |  | $ | 2,481 |  |  | $ | 111 |  |  | $ | 156 |
Interest cost |  | 4,593 |  |  | 4,891 |  |  | 216 |  |  | 299 |
Expected return on plan assets |  | (8,537 | ) |  | (8,251 | ) |  | — |  |  | — |
Amortization of prior service cost |  | 17 |  |  | 21 |  |  | (84 | ) |  | (84 | )
Recognized net actuarial losses |  | 3,929 |  |  | 2,203 |  |  | 7 |  |  | 83 |
Settlements |  | 33 |  |  | 57 |  |  | — |  |  | — |
Net periodic benefit cost |  | 2,939 |  |  | 1,402 |  |  | 250 |  |  | 454 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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