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Defined Benefit Plans (Estimated benefit payments over next ten years) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 28, 2012
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2013 $ 8,813
2014 272
2015 289
2016 307
2017 364
2018-2022 $ 1,738