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Stockholders' Equity (Details Narrative) - USD ($)
3 Months Ended
Oct. 31, 2017
Sep. 25, 2017
Apr. 13, 2016
Oct. 31, 2017
Oct. 31, 2016
Jul. 31, 2017
Jan. 23, 2017
Nov. 23, 2015
Aug. 29, 2014
Preferred stock shares authorized 5,000,000     5,000,000   5,000,000      
Preferred stock shares par value $ 0.01     $ 0.01   $ 0.01      
Preferred stock shares issued            
Preferred stock shares outstanding            
Common stock shares authorized 100,000,000     100,000,000   100,000,000      
Common stock shares par value $ 0.01     $ 0.01   $ 0.01      
Inducement to exercise warrants       $ 876,000        
Two Year Service Agreement [Member]                  
Number of common shares issued for services 50,000                
Value of shares issued for services $ 51,000     3,000          
Two Year Service Agreement One [Member]                  
Number of common shares issued for services     250,000            
Value of shares issued for services     $ 290,000 $ 36,000 $ 36,000        
2014 Warrant [Member]                  
Number of warrants to purchase common stock 2,533,331 1,491,649   2,533,331         4,104,980
Shares issued price per share $ 0.75     $ 0.75          
2014 Warrant [Member] | Maximum [Member]                  
Shares issued price per share                 $ 0.75
2014 Warrant [Member] | Minimum [Member]                  
Shares issued price per share                 $ 0.60
2015 Warrant [Member]                  
Number of warrants to purchase common stock               1,986,101  
2015 Warrant [Member] | Maximum [Member]                  
Shares issued price per share               $ 0.45  
2015 Warrant [Member] | Minimum [Member]                  
Shares issued price per share               $ 0.40  
2017 Warrant [Member]                  
Number of warrants to purchase common stock 176,471 1,396,470   176,471     1,572,941    
Shares issued price per share $ 1.25     $ 1.25          
Proceeds from issuance of common shares   $ 2,720,000              
2017 Warrant [Member] | Maximum [Member]                  
Shares issued price per share             $ 1.25    
2017 Warrant [Member] | Minimum [Member]                  
Shares issued price per share             $ 0.85    
2014 Warrant and 2017 Warrant [Member]                  
Warrant expiration date       Sep. 25, 2017          
2015 Warrant [Member]                  
Number of warrants to purchase common stock 268,909 1,599,135   268,909          
Proceeds from issuance of common shares       $ 107,000          
2015 Warrant [Member] | Garden State Securities Inc [Member]                  
Number of warrants to purchase common stock 4,756,163     4,756,163          
Proceeds from issuance of common shares       $ 2,632,000          
Warrant [Member]                  
Number of warrants exercise during the period       198,057          
Issuance of share of common stock       82,545