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Commitments, Contingencies and Guarantees-Indemnity (Details Textual 3) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 30, 2012
Supplier and Customer [Member]
   
Indemnification    
Indemnification Accrual At Carrying Value $ 0  
Officers, Employees and Directors [Member]
   
Indemnification    
Indemnification Accrual At Carrying Value 0 0
Environmental Cost [Member]
   
Indemnification    
Indemnification Accrual At Carrying Value $ 0