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Basic and Diluted Net Loss Per Common Share (Details)
3 Months Ended 6 Months Ended
Jul. 28, 2012
Jul. 30, 2011
Jul. 28, 2012
Jul. 30, 2011
BASIC AND DILUTED NET LOSS PER COMMON SHARE [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 7,727,825 1,510,500 7,727,825 2,418,920