Quarterly report pursuant to Section 13 or 15(d)

Common Stock And Earnings Per Share (Schedule Of Common Stock And Earnings Per Share) (Details)

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Common Stock And Earnings Per Share (Schedule Of Common Stock And Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Dec. 28, 2013
Dec. 29, 2012
Common Stock And Earnings Per Share [Abstract]        
Net earnings available to common shareholders $ 16,537 $ 17,779    
Common shares outstanding entire period 13,981   13,886 13,821
Weighted average common shares issued during period 33 10    
Weighted average common shares cancelled during period   (188)    
Weighted average common shares outstanding during period 13,919 13,643    
Earnings per common share from net earnings - basic $ 1.19 $ 1.30    
Weighted average common shares outstanding during period - basic 13,919 13,643    
Dilutive effect of in-the-money equity awards 476 260    
Weighted average common shares outstanding during period - diluted 14,395 13,903    
Earnings per common share from net earnings - diluted $ 1.15 $ 1.28