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		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Other Postretirement Benefit Plan, Defined Benefit [Member]
Employee Benefit Plans (Details) - Schedule of Costs of Retirement Plans [Line Items]
Interest cost	$ 25	$ 32	$ 50	$ 65
Amortization of prior service benefit	(42)	(44)	(84)	(89)
Amortization of actuarial loss	8	7	17	14
Net periodic postretirement benefit cost (benefit)	$ (9)	$ (5)	$ (17)	$ (10)