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Sycamore Transactions -Financing Transaction (Details)
May. 23, 2014
unit_of_accounting
$ / shares
shares
Jan. 30, 2016
$ / shares
Jan. 31, 2015
$ / shares
Debt Instrument [Line Items]      
Preferred stock, par value (usd per share)   $ 0.01 $ 0.01
Number of units of accounting or elements included in arrangement | unit_of_accounting 4    
Affiliated Entity      
Debt Instrument [Line Items]      
Common stock ownership percentage by related party 8.00%    
Series B Preferred Stock      
Debt Instrument [Line Items]      
Stock issued during period (shares) | shares 1,000    
Preferred stock, par value (usd per share) $ 0.01    
Conversion price (usd per share) $ 7.25    
Conversion ratio 3,932.018    
Expected term 10 years    
Risk free interest rate 2.54%    
Expected volatility rate 50.00%