Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Common Stock and Warrants Narrative) (Details)

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Stockholders' Equity (Common Stock and Warrants Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Apr. 07, 2017
Aug. 31, 2016
Jul. 31, 2016
Jun. 21, 2016
Jun. 08, 2015
Apr. 29, 2015
Jun. 24, 2016
Apr. 22, 2016
Jan. 31, 2016
Jan. 22, 2016
Jan. 19, 2016
Apr. 30, 2017
Apr. 30, 2016
Feb. 26, 2015
Jan. 31, 2014
Stockholders Equity [Line Items]                              
Stock units granted         25,000                    
Fair value of grant         $ 50,400                    
Allocated Share-based Compensation Expense                 $ 50,400            
Vesting-period         6 months                    
Repurchase of shares under settlement agreement                     $ 29,500        
Repurchase of shares under settlement agreement, shares                     3,500        
Expenses for settlement                     $ 23,662        
Common stock, shares issued                       13,520,679 11,263,179    
Proceeds from warrant exercise                       $ 752,500    
Payment for warrant buyback                       400,000    
Shares issued for services rendered                       52,502 50,400    
Shares issued for services rendered, shares 20,000   29,167                        
Issuance of common shares for cash, shares 2,000,000                            
Issuance of common shares for cash $ 7,500,000                     $ 7,500,000      
Shares issued price per share $ 3.75                            
Proceeds from issuance of common stock $ 6,996,000         $ 101,502                  
Additional cash disbursements $ 57,000                            
Line of Credit [Member]                              
Stockholders Equity [Line Items]                              
Exercise price of warrants   $ 2.40                          
Line of credit, remaining available                         $ 248,217 $ 1,122,485 $ 848,225
Origination fee percentage   2.00%                          
Payment of origination fees   $ 60,000                          
Contract One [Member]                              
Stockholders Equity [Line Items]                              
Shares issued for services rendered     $ 30,000                        
Shares issued for services rendered, shares     16,667                        
Duration of contract     6 months                        
Contract Two [Member]                              
Stockholders Equity [Line Items]                              
Shares issued for services rendered     $ 22,500                        
Shares issued for services rendered, shares     12,500                        
Duration of contract     1 year                        
Warrant [Member]                              
Stockholders Equity [Line Items]                              
Reduced Exercise price                       $ 3.99      
Proceeds from warrant exercise               $ 752,500              
Warrant buyback, shares       93,414     1,120,968                
Shares issued upon conversion       208,333     208,333 404,624              
Value of shares issued upon conversion       $ 400,000     $ 400,000                
Payment for warrant buyback       400,000                      
Exercise price of warrants               $ 1.86              
Warrant modification expense       206,000                      
Fair value of warrants outstanding       $ 594,000                      
CEO [Member]                              
Stockholders Equity [Line Items]                              
Conversion of convertible debt into shares, shares               132,588              
Debt conversion, price per share               $ 2.28              
Warrants exercised               $ 300,000              
Largest Shareholder [Member] | Line of Credit [Member]                              
Stockholders Equity [Line Items]                              
Exercise price of warrants   $ 2.40                          
Line of credit, remaining available   $ 3,000,000                          
Origination fee percentage   2.00%                          
Payment of origination fees   $ 60,000                          
Largest Shareholder [Member] | Warrant [Member] | Line of Credit [Member]                              
Stockholders Equity [Line Items]                              
Common stock, shares issued   62,500                          
Common Stock [Member]                              
Stockholders Equity [Line Items]                              
Repurchase of shares under settlement agreement, shares                         3,500    
Common stock, shares issued               404,624              
Reduced Exercise price                   $ 1.86          
Proceeds from warrant exercise                   $ 752,500          
Conversion of convertible debt into shares, shares                         132,588    
Exercise price of warrants               $ 1.86              
Warrant modification expense                   $ 48,555          
Shares issued for services rendered                       $ 49 $ 25    
Shares issued for services rendered, shares                       49,167 25,000    
Issuance of common shares for cash, shares                       2,000,000      
Issuance of common shares for cash                       $ 2,000      
Shares issued price per share               $ 2.28              
Common Stock [Member] | Largest Shareholder [Member] | Line of Credit [Member]                              
Stockholders Equity [Line Items]                              
Exercise price of warrants   $ 3.00