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Basic and Diluted Net Loss Per Common Share - Textuals (Details) - shares
3 Months Ended 9 Months Ended
Oct. 31, 2015
Nov. 01, 2014
Oct. 31, 2015
Nov. 01, 2014
Earnings Per Share [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 7,262,677 7,348,694 7,263,887 7,399,461