Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity Stock Grant Volatility (Details)

v2.4.0.8
Shareholders' Equity Stock Grant Volatility (Details)
12 Months Ended
Feb. 01, 2014
Feb. 02, 2013
Jan. 28, 2012
Share-based Compensation [Abstract]      
Expected Volatility Rate, Minimum 98.00% 97.00% 88.00%
Expected Volatility Rate, Maximum 100.00% 99.00% 96.00%
Risk Free Interest Rate, Minimum 1.10% 1.00% 1.30%
Risk Free Interest Rate, Maximum 2.10% 1.40% 2.70%
Risk Free Interest Rate 1.00%    
Expected Term 6 years 6 years 6 years
Grant Term Limit 10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years    
Exercise Term Limit 10 years