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11. Subsequent Events (Detail) (USD $)
3 Months Ended 9 Months Ended 1 Months Ended
Oct. 28, 2012
Oct. 30, 2011
Oct. 28, 2012
Oct. 30, 2011
Dec. 05, 2012
Subsequent Event [Member]
Dividends Payable, Date Declared         Dec. 04, 2012
Common Stock, Dividends, Per Share, Declared (in Dollars per share) $ 0.10 $ 0.10 $ 0.30 $ 0.30 $ 0.10
Dividends Payable, Date to be Paid         Dec. 28, 2012
Dividends Payable, Date of Record         Dec. 17, 2012