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Accumulated Other Comprehensive Loss (Amortization to Income) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 28, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Amortization of prior service cost $ 1
Amortization of actuarial losses 138
Total before income tax 139
Income tax (36)
Net of tax $ 103