Quarterly report pursuant to Section 13 or 15(d)

Stock Options and Warrants - Additional Information (Detail)

v3.5.0.2
Stock Options and Warrants - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Aug. 31, 2016
Aug. 31, 2015
May 31, 2016
Mar. 31, 2016
Feb. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Proceeds from exercise of warrants $ 397,880        
Compensation expense $ 335,349 $ 351,564      
Private Equity Offering          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Warrants to purchase common shares, shares 774,097        
Term of warrants 5 years   5 years    
Exercise price of warrants, per share $ 1.00        
Proceeds from exercise of warrants $ 397,880        
Private Equity Offering | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price of warrants, per share     $ 0.75    
Private Equity Offering | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price of warrants, per share     $ 1.00    
Private Equity Offering | Warrants          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Warrants to purchase common shares, shares 182,375   23,254,230    
Exercise price of warrants, per share $ 1.35        
Private Equity Offering | Investors and Placement Agent | Warrants          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Warrants to purchase common shares, shares 182,375        
Non Cash Exercise | Private Equity Offering          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Warrants to purchase common shares, shares 122,362        
Exercise Price 1 | Private Equity Offering          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price of warrants, per share $ 1.35        
Exercise Price 2 | Private Equity Offering          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price of warrants, per share 0.50        
Exercise Price 3 | Private Equity Offering          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price of warrants, per share 0.75        
Exercise Price 4 [Member] | Private Equity Offering          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price of warrants, per share $ 0.75        
2012 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation expense $ 335,349 351,564      
Grant date fair value of options and warrants 252,000 $ 337,000      
Unrecognized compensation expense $ 1,404,000        
Weighted average period over which unrecognized compensation expense is expected to be recognized 1 year 10 months 13 days        
2012 Equity Incentive Plan | Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for future stock-based grants 650,930        
2012 Equity Incentive Plan | Stock Options | Directors          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock options granted, shares 300,000        
Stock options granted, exercise price $ 1.09        
Stock options grant date fair value $ 0.78        
2012 Equity Incentive Plan | Stock Options | Directors | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period 1 year        
2012 Equity Incentive Plan | Stock Options | Directors | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period 10 years        
2012 Equity Incentive Plan | Stock Options | Executive Management and Employees          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock options granted, shares 1,050,000        
Vesting period 3 years        
Stock options granted, exercise price, lower range limit $ 1.09        
Stock options granted, exercise price, upper range limit $ 1.10        
Stock options, term 10 years        
2012 Equity Incentive Plan | Stock Options | Executive Management and Employees | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock options grant date fair value $ 0.75        
2012 Equity Incentive Plan | Stock Options | Executive Management and Employees | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock options grant date fair value $ 0.76        
2012 Equity Incentive Plan | Stock Options | Before Amendment          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for future issuance       5,000,000 3,000,000
2012 Equity Incentive Plan | Stock Options | After amendment          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for future issuance       7,000,000 5,000,000