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Condensed Consolidated Statement of Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
4 Months Ended
Jan. 20, 2013
Jan. 22, 2012
Statement of Other Comprehensive Income [Abstract]    
Actuarial losses and prior service cost reclassified to earnings, tax benefits $ 2,229 $ 1,527
Change in fair value of derivatives, tax expense (benefit) (1) 155
Net loss reclassified to earnings, tax $ 159 $ 153