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Employee Benefit Plans (Details) - Schedule of Costs of Retirement Plans (Other Postretirement Benefit Plan, Defined Benefit [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Other Postretirement Benefit Plan, Defined Benefit [Member]
       
Employee Benefit Plans (Details) - Schedule of Costs of Retirement Plans [Line Items]        
Interest cost $ 23 $ 34 $ 73 $ 99
Amortization of prior service benefit (42) (44) (126) (133)
Amortization of actuarial loss 8 10 25 24
Net periodic postretirement benefit cost (benefit) $ (11)    $ (28) $ (10)