Quarterly report pursuant to sections 13 or 15(d)

Public Offering (Details)

v2.4.0.8
Public Offering (Details) (USD $)
0 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended
Sep. 18, 2013
Oct. 31, 2013
Maximum
Sep. 18, 2013
Warrants issued with September 2013 Public Offering
Oct. 31, 2013
Warrants issued with September 2013 Public Offering
Sep. 18, 2013
Warrants issued with September 2013 Public Offering
H.C. Wainwright
Aug. 16, 2013
Warrants issued with September 2013 Public Offering
H.C. Wainwright
Aug. 16, 2013
Warrants issued with September 2013 Public Offering
H.C. Wainwright
Maximum
Sep. 18, 2013
Warrants issued with September 2013 Public Offering
Maxim
Aug. 16, 2013
Warrants issued with September 2013 Public Offering
Maxim
Aug. 16, 2013
Warrants issued with September 2013 Public Offering
Placement Agents
Oct. 31, 2013
Warrants issued with September 2013 Public Offering
Placement Agents
Sep. 18, 2013
Warrants issued with September 2013 Public Offering
Placement Agents
Shares issued in offering 47,792,000                      
Aggregate number of shares of common stock the warrants can purchase     23,896,000                  
Proceeds from issuance of common stock and warrants $ 11,950,000                      
Net, proceeds from issuance of common stock and warrants 11,100,000                      
Number of shares of common stock entitled to be purchased as a percentage of shares issued to such investor     50.00%                  
Exercise price of warrants (in dollars per share)   $ 1.20 $ 0.35                 $ 0.3125
Term of warrants     4 years                  
Placement agent and financial advisory services fees as a percentage of the offering proceeds           6.00%            
Non-accountable expense allowance as a percentage of gross proceeds of offering           1.00%            
Percentage of warrants paid to placement agents             5.00%   1.00%      
Warrants issued to placement agents (in shares)         1,911,680     477,920   2,389,600    
Fair value of warrants       $ 2,461,008             $ 410,535  
Dividend yield (as a percent)       0.00%             0.00%  
Volatility rate (as a percent)       83.62%             94.57%  
Risk-free interest rate (as a percent)       1.43%             1.43%