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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 10, 2015
Oct. 04, 2014
Oct. 10, 2015
Oct. 04, 2014
Statement Of Income And Comprehensive Income [Abstract]        
Net earnings $ 15,393 $ 17,096 $ 45,981 $ 46,725
Other comprehensive income, before tax        
Pension and postretirement liability adjustment 204 203 681 678
Total other comprehensive income, before tax 204 203 681 678
Income tax expense related to items of other comprehensive income (78) (78) (259) (259)
Total other comprehensive income, after tax 126 125 422 419
Comprehensive income $ 15,519 $ 17,221 $ 46,403 $ 47,144