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Contingent Liabilities And Settlements (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Mar. 31, 2013
Dec. 25, 2011
Sep. 28, 2014
Sep. 29, 2013
Nov. 02, 2011
Dec. 28, 2008
Commitments and Contingencies Disclosure [Abstract]                
Loss contingency accrual               $ 5,700,000
Estimated litigation liability             6,600,000  
Loss contingency accrual, provision       900,000        
Benefit due to reversal of accrued litigation reserve 0 0 6,600,000   0 6,584,000    
Loss contingency, damages sought         $ 65,000,000