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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Jul. 29, 2017
Jan. 28, 2017
Jul. 30, 2016
Condensed Consolidated Balance Sheets (Parenthetical)      
Common stock par value (in dollars per share) $ 0.01 $ 0.01 $ 0.01
Common stock, authorized 500,000,000 500,000,000 500,000,000
Common stock, shares issued 60,418,045 60,366,768 50,836,727
Common stock, outstanding shares 60,418,045 60,366,768 50,836,727