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CAPITAL STOCK (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Mar. 10, 2016
Feb. 09, 2016
Jan. 20, 2017
Jun. 25, 2015
Jul. 31, 2017
Jul. 31, 2016
Jul. 31, 2015
Jul. 31, 2014
Capital Stock [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value         $ 4,910,235      
Share Price $ 0.81   $ 1.54 $ 1.60        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           2,600,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         672,500 3,033,000 7,640,000  
Share-based Compensation Arrangement By Share Based Payment Award Options Unvested In Period Fair Value1         $ 436,253      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value         $ 4,473,982      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Contractual Term         5 years 5 years 5 years  
Stock Issued During Period, Value, New Issues         $ 19,421,351 $ 8,365,037 $ 7,659,139  
Number Of Warrants Issued     9,571,929          
Number Of Warrants To Be Issued     9,571,934          
Employee Stock Option [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period         412,134 682,167 609,390  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         672,500 3,033,000 7,640,000  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price         $ 1.11 $ 1.02 $ 1.32  
After Amendment [Member]                
Capital Stock [Line Items]                
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 1.35       1.35    
Before Amendment [Member]                
Capital Stock [Line Items]                
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 2.50       2.50    
Minimum [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price         0.93 0.93 1.20  
Maximum [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price         $ 1.35 1.32 1.32  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Contractual Term         10 years      
Warrant [Member]                
Capital Stock [Line Items]                
Stock Issued During Period, Shares, New Issues   2,600,000            
Class of Warrant or Right, Exercise Price of Warrants or Rights         $ 1.78 $ 1.65 $ 2.38 $ 2.38
Options Exercised [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period         162,227 309,634 230,267  
Options Exercised [Member] | Employee Stock Option [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period             535,000  
June 25,2015 [Member]                
Capital Stock [Line Items]                
Stock Issued During Period, Shares, New Issues       5,000,000        
Proceeds from Issuance or Sale of Equity, Total       $ 10,000,000        
Sale of Stock, Price Per Share       $ 2.00        
Agents [Member]                
Capital Stock [Line Items]                
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 2.35        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       350,000        
2014 Shelf Offering                
Capital Stock [Line Items]                
Stock Issued During Period, Shares, New Issues 12,364,704              
Share Price $ 0.85              
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 1.20              
Proceeds from Issuance or Sale of Equity, Total $ 10,510,000              
Aggregate Offering Amount Of 2014 Shelf         $ 100,000,000      
2014 Shelf Offering | Agents [Member]                
Capital Stock [Line Items]                
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 1.20              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 411,997              
2011 Shelf Offering [Member]                
Capital Stock [Line Items]                
Stock Issued During Period, Shares, New Issues             280,045  
Proceeds from Issuance or Sale of Equity, Total             $ 474,788  
Sale of Stock, Price Per Share             $ 1.70  
Over-Allotment Option [Member]                
Capital Stock [Line Items]                
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 2.00          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     906,516          
Equity Financing [Member]                
Capital Stock [Line Items]                
Stock Issued During Period, Shares, New Issues     17,330,836          
Shares Issued, Price Per Share     $ 1.50          
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 2.00          
Stock Issued During Period, Value, New Issues     $ 26,000,000          
2016 Stock Incentive Plan [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant         4,133,920      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total         $ 187,530      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition         7 months 13 days      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         12,305,500      
2017 Stock Incentive Plan [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized         6,000,000      
2017 Stock Incentive Plan [Member] | Employee Stock Option [Member]                
Capital Stock [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized         22,439,420