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Summary of Significant Accounting Policies - Reconciliation of Number of Shares Outstanding for Basic and Diluted Earning Per Share (Parenthetical) (Details) - shares
12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Accounting Policies [Abstract]      
Common stock equivalents 582,591 497,820 443,410