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Restructuring and Other Charges (Narrative) (Details)
$ in Thousands
Jan. 02, 2016
USD ($)
facility
restructuring_plan
Dec. 27, 2014
USD ($)
Dec. 28, 2013
USD ($)
Restructuring Cost and Reserve [Line Items]      
Number of active restructuring plans (restructuring plan) | restructuring_plan 2    
Restructuring reserve $ 20,924    
Restructuring reserve, current 3,198 $ 5,174  
Restructuring reserve, noncurrent 17,700    
Acquisition Integration Plans [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve $ 392 $ 1,213 $ 2,658
National Envelope Acquisition [Member] | Acquisition Integration Plans [Member] | Envelope [Member]      
Restructuring Cost and Reserve [Line Items]      
Number of facilities closed (facility) | facility 9    
Number of new facilities (facility) | facility 2