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Accumulated Other Comprehensive Items, Reclassifications out of AOCI (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items] |  |  |  |  |  |
Total reclassifications | $ (982) |  | $ (1,086) |  | $ (764) |
Pension and Other Post-retirement Plans [Member] |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items] |  |  |  |  |  |
Other Comprehensive Income Loss Reclassification Adjustment On Defined Benefit Plans Included In Net Income Before Tax | (761) |  | (768) |  | (539) |
Income tax benefit | 264 |  | 274 |  | 192 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | (497) |  | (494) |  | (347) |
Pension and Other Post-retirement Plans [Member] | Amortization of Prior Service Cost [Member] |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items] |  |  |  |  |  |
Amortization of prior service costs (1) | (141) | [1] | (85) | [1] | (72) | [1]
Pension and Other Post-retirement Plans [Member] | Amortization Of Actuarial Losses [Member] |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items] |  |  |  |  |  |
Amortization of actuarial losses (1) | (620) | [1] | (683) | [1] | (467) | [1]
Cash Flow Hedges [Member] |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items] |  |  |  |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax | (527) |  | (909) |  | (453) |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax | (527) |  | (909) |  | (453) |
Income tax benefit | 42 |  | 317 |  | 36 |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax | (485) |  | (592) |  | (417) |
Cash Flow Hedges [Member] | Interest Rate Swap [Member] |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items] |  |  |  |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax | (374) | [2] | (513) | [2] | (706) | [2]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax | (374) | [2] | (513) | [2] | (706) | [2]
Cash Flow Hedges [Member] | Forward Currency-Exchange Contracts [Member] |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items] |  |  |  |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax | (153) | [2] | (396) | [2] | 253 | [2]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax | $ (153) | [2] | $ (396) | [2] | $ 253 | [2]
[1] | Included in the computation of net periodic pension costs. See Note 3 for additional information.
[2] | See Note 10 for additional information.

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