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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $)
In Thousands, unless otherwise specified
4 Months Ended
Apr. 19, 2014
Apr. 27, 2013
Statement Of Income And Comprehensive Income [Abstract]    
Net earnings $ 12,310 $ 8,636
Other comprehensive income, before tax    
Pension and postretirement liability adjustment 271 173
Total other comprehensive income, before tax 271 173
Income tax benefit related to items of other comprehensive income (103) (67)
Total other comprehensive income, after tax 168 106
Comprehensive income $ 12,478 $ 8,742