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Acquisitions (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Nesbitt Acquisition [Member]
Sep. 29, 2012
Envelope Product Group Acquisition [Member]
Feb. 01, 2011
Envelope Product Group Acquisition [Member]
Sep. 29, 2012
Customer Relationships [Member]
Sep. 29, 2012
Customer Relationships [Member]
Nesbitt Acquisition [Member]
Sep. 29, 2012
Trade Names [Member]
Envelope Product Group Acquisition [Member]
Sep. 29, 2012
Patents [Member]
Sep. 29, 2012
Patents [Member]
Envelope Product Group Acquisition [Member]
Business Acquisition [Line Items]                        
Acquisition related costs $ 700,000 $ 800,000 $ 1,100,000 $ 4,900,000                
Annual net sales prior to acquisition by the Company         5,600,000 240,000,000            
Cost of EPG acquisition         5,600,000 55,158,000            
Acquisition goodwill amount         2,000,000              
Other intangible assets, net           $ 1,500,000     $ 1,400,000 $ 1,000,000   $ 500,000
Intangible asset useful life     13 years         11 years 10 years 10 years 9 years 15 years
Entity Number of Employees             900