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Retirement Benefit Plans | 9 Months Ended
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Sep. 30, 2012
Compensation and Retirement Disclosure [Abstract] |
Retirement Benefit Plans |
10. | Retirement Benefit Plans
Our defined benefit pension plans and postretirement medical plan are described in Note 11 of the 2011 annual report on Form 10-K. We have contributed $517 and $186 during the third quarter of 2012 and $1,512 and $425 during the first nine months of 2012 to our pension plans and to our postretirement medical plan, respectively. The components of the net periodic benefit cost for the three and nine months ended September 30, 2012 and 2011 were as follows:
| Three Months Ended |
| September 30 |
| Pension Benefits |  | Postretirement |
| U.S. Plans |  | Non-U.S. Plans |  | Medical Benefits |
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011 |
Service cost | $ | 175 |  |  | $ | 163 |  |  | $ | 33 |  |  | $ | 25 |  |  | $ | 34 |  |  | $ | 33 |  |
Interest cost | 485 |  |  | 503 |  |  | 131 |  |  | 122 |  |  | 140 |  |  | 153 |  |
Expected return on plan assets | (569 | ) |  | (581 | ) |  | (118 | ) |  | (109 | ) |  | — |  |  | — |  |
Amortization of net actuarial loss | 281 |  |  | 7 |  |  | — |  |  | — |  |  | 17 |  |  | — |  |
Amortization of prior service cost | 94 |  |  | 137 |  |  | 38 |  |  | 40 |  |  | (145 | ) |  | (145 | ) |
Foreign currency | — |  |  | — |  |  | (10 | ) |  | (325 | ) |  | — |  |  | — |  |
Net periodic cost | $ | 466 |  |  | $ | 229 |  |  | $ | 74 |  |  | $ | (247 | ) |  | $ | 46 |  |  | $ | 41 |  |
| Nine Months Ended |
| September 30 |
| Pension Benefits |  | Postretirement |
| U.S. Plans |  | Non-U.S. Plans |  | Medical Benefits |
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011 |
Service cost | $ | 514 |  |  | $ | 489 |  |  | $ | 99 |  |  | $ | 75 |  |  | $ | 104 |  |  | $ | 99 |  |
Interest cost | 1,446 |  |  | 1,509 |  |  | 392 |  |  | 366 |  |  | 419 |  |  | 459 |  |
Expected return on plan assets | (1,709 | ) |  | (1,744 | ) |  | (353 | ) |  | (325 | ) |  | — |  |  | — |  |
Amortization of net actuarial loss | 849 |  |  | 21 |  |  | — |  |  | — |  |  | 51 |  |  | — |  |
Amortization of prior service cost | 286 |  |  | 412 |  |  | 115 |  |  | 118 |  |  | (435 | ) |  | (435 | ) |
Foreign currency | — |  |  | — |  |  | 13 |  |  | (248 | ) |  | — |  |  | — |  |
Net periodic cost | $ | 1,386 |  |  | $ | 687 |  |  | $ | 266 |  |  | $ | (14 | ) |  | $ | 139 |  |  | $ | 123 |  |

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7, 21, 22 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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