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Pensions and Other Postretirement Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2013
Pensions and Other Postretirement Benefit Plans [Abstract] |
Schedule of Net Periodic Benefit Plan Cost | The composition of the net periodic benefit plan cost for the nine months ended September 30, 2013 and 2012 was as follows:
| Pension plans |  | Other postretirement benefits
(in thousands) | 2013 | 2012 |  | 2013 | 2012
Components of net periodic benefit cost: |  |  |  |  |
Service cost | $2,526 | $54 |  | $789 | $804
Interest cost | 5,999 | 9,824 |  | 2,374 | 2,766
Expected return on assets | (6,103) | (9,436) |  | - | -
Amortization of prior service cost/(credit) | 27 | 339 |  | (2,818) | (2,751)
Amortization of transition obligation | 51 | 59 |  | - | -
Amortization of net actuarial loss | 2,357 | 3,774 |  | 2,606 | 2,412
Settlement | 315 | 119,735 |  | - | -
Net periodic benefit cost | $5,172 | $124,349 |  | $2,951 | $3,231

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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=28361610&loc=d3e1928-114920 + Details
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