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Consolidated Statement Of Changes In Stockholders' Equity (Parenthetical) (USD $)
3 Months Ended 9 Months Ended
Oct. 06, 2012
Oct. 08, 2011
Oct. 06, 2012
Oct. 08, 2011
Dividends paid, per common share $ 0.160 $ 0.150 $ 0.470 $ 0.433