Annual report pursuant to Section 13 and 15(d)

Common Stock Transactions (Details)

v3.3.0.814
Common Stock Transactions (Details) - USD ($)
10 Months Ended
Jun. 08, 2015
Jun. 06, 2014
Sep. 18, 2013
Jun. 06, 2014
Jul. 31, 2015
Private Placements and Public Offerings          
Shares issued in offering 2,469,091 1,126,761 2,389,600    
Issuance price per share (in dollars per share) $ 5.50        
Aggregate number of shares of common stock the warrants can purchase         1,895,102
Proceeds from issuance of common stock and warrants $ 13,600,000        
Net, proceeds from issuance of common stock and warrants $ 12,500,000        
Maximum          
Private Placements and Public Offerings          
Exercise price of warrants (in dollars per share)         $ 24.00
Warrants issued with June 2014 Public Offering          
Private Placements and Public Offerings          
Aggregate number of shares of common stock the warrants can purchase   394,367   394,367  
Proceeds from issuance of common stock and warrants       $ 16,000,000  
Net, proceeds from issuance of common stock and warrants       14,900,000  
Fair value of warrants   $ 2,756,979   $ 2,756,979  
Dividend yield (as a percent)       0.00%  
Volatility rate (as a percent)       90.30%  
Risk-free interest rate (as a percent)       1.53%  
Warrants issued with September 2013 Public Offering          
Private Placements and Public Offerings          
Aggregate number of shares of common stock the warrants can purchase     1,194,800    
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)     $ 7.00    
Term of warrants     4 years    
Fair value of warrants     $ 2,461,008    
Dividend yield (as a percent)     0.00%    
Volatility rate (as a percent)     83.62%    
Risk-free interest rate (as a percent)     1.43%    
Placement Agents | Warrants issued with June 2015 Public Offering          
Private Placements and Public Offerings          
Exercise price of warrants (in dollars per share) $ 6.88        
Placement agent fees as a percentage of 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%        
Warrants issued to placement agents (in shares) 123,455        
Fair value of warrants $ 571,868        
Dividend yield (as a percent) 0.00%        
Volatility rate (as a percent) 88.40%        
Risk-free interest rate (as a percent) 1.72%        
Placement Agents | Warrants issued with June 2014 Public Offering          
Private Placements and Public Offerings          
Placement agent fees as a percentage of offering proceeds   6.00%      
Non-accountable expense allowance as a percentage of gross proceeds of offering   1.00%      
Reimbursement of expenses to lead placement agent   $ 25,000      
Fair value of warrants   $ 631,707   $ 631,707  
Dividend yield (as a percent)   0.00%      
Volatility rate (as a percent)   90.30%      
Risk-free interest rate (as a percent)   1.53%      
Placement Agents | Warrants issued with June 2014 Public Offering | Maximum          
Private Placements and Public Offerings          
Percentage of warrants paid to placement agents   6.00%      
Placement Agents | Warrants issued with September 2013 Public Offering          
Private Placements and Public Offerings          
Exercise price of warrants (in dollars per share)     $ 6.25    
Placement agent fees as a percentage of 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%    
Warrants issued to placement agents (in shares)     119,480    
Fair value of warrants     $ 410,535    
Dividend yield (as a percent)     0.00%    
Volatility rate (as a percent)     94.57%    
Risk-free interest rate (as a percent)     1.43%