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Defined Benefit Plans (Tables) | 9 Months Ended
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Sep. 26, 2012
Defined Benefit Plans [Abstract] |
Components of net periodic benefit cost | The components of net periodic benefit cost were as follows:
|  | Pension Plan |  | Other Defined Benefit Plans
|  | Quarter Ended |  | Quarter Ended
|  | September 26, 2012 |  | September 28, 2011 |  | September 26, 2012 |  |  | September 28, 2011
|  | (In thousands)
Service cost |  | $ | 95 |  |  | $ | 84 |  |  | $ | — |  |  | $ | — |
Interest cost |  |  | 800 |  |  |  | 841 |  |  |  | 29 |  |  |  | 32 |
Expected return on plan assets |  |  | (1,024 | ) |  |  | (1,046 | ) |  |  | — |  |  |  | — |
Amortization of net loss |  |  | 441 |  |  |  | 251 |  |  |  | 13 |  |  |  | 8 |
Net periodic benefit cost |  | $ | 312 |  |  | $ | 130 |  |  | $ | 42 |  |  | $ | 40 |
|  | Pension Plan |  | Other Defined Benefit Plans
|  | Three Quarters Ended |  | Three Quarters Ended
|  | September 26, 2012 |  | September 28, 2011 |  | September 26, 2012 |  |  | September 28, 2011
|  | (In thousands)
Service cost |  | $ | 285 |  |  | $ | 251 |  |  | $ | — |  |  | $ | — |
Interest cost |  |  | 2,400 |  |  |  | 2,523 |  |  |  | 87 |  |  |  | 95 |
Expected return on plan assets |  |  | (3,042 | ) |  |  | (3,137 | ) |  |  | — |  |  |  | — |
Amortization of net loss |  |  | 1,322 |  |  |  | 753 |  |  |  | 39 |  |  |  | 24 |
Net periodic benefit cost |  | $ | 965 |  |  | $ | 390 |  |  | $ | 126 |  |  | $ | 119 |

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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=21915506&loc=d3e1928-114920 + Details
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