Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Deficit (Details Textual)

v3.19.3
Stockholders' Deficit (Details Textual)
3 Months Ended 5 Months Ended 9 Months Ended
Sep. 19, 2019
Jul. 10, 2019
$ / shares
shares
Jun. 19, 2019
$ / shares
shares
Jun. 16, 2019
USD ($)
$ / shares
shares
May 08, 2019
shares
Feb. 19, 2019
USD ($)
$ / shares
shares
Feb. 14, 2019
shares
Sep. 30, 2019
USD ($)
$ / shares
shares
Sep. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
$ / shares
shares
Sep. 30, 2019
USD ($)
$ / shares
shares
Sep. 30, 2018
USD ($)
Jan. 31, 2019
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Jun. 08, 2018
$ / shares
shares
Apr. 20, 2018
$ / shares
shares
Nov. 30, 2012
shares
Preferred stock par value (in dollars per share) | $ / shares                           $ 0.001      
Grants of restricted stock in period (in shares)   19,000                              
Shares vested in period (in shares)           127,500                      
Award vesting period   4 years                              
Granted (in shares)                     608,550            
Grants in period, weighted average exercise price (in dollars per share) | $ / shares   $ 17.50                 $ 5.70            
Expiration term period   10 years                              
Award vesting rights, percentage   25.00%                              
Share price (in dollars per share) | $ / shares           $ 4.87                      
Number of securities called by warrants (in shares)           1,228,431                      
Exercise price of warrants or rights (in dollars per share) | $ / shares               $ 9.33   $ 9.33 $ 9.33     $ 1.75      
Warrants outstanding | $           $ 1,636,232                      
Private Investment in Public Equity Offering                                  
Exercise price of warrants or rights (in dollars per share) | $ / shares       $ 16.00                          
Term of warrants and rights outstanding       5 years                          
Number of units issued (in shares)       675,000                          
Number of common stock per unit (in shares)       1                          
Number of warrants per unit (in shares)     0.7 0.7                          
Number of securities called by each warrant or right (in shares)       1                          
Proceeds from sale of units | $       $ 8,600,000                          
Convertible Debt | Fifth Note                                  
Unamortized discount remaining | $           $ 664,953                      
Measurement Input, Expected Term                                  
Warrants outstanding, measurement input           5                      
Measurement Input, Expected Dividend Payment                                  
Warrants outstanding, measurement input           0                      
Measurement Input, Share Price                                  
Warrants outstanding, measurement input           1.67                      
Warrant Issued Under Fourth Note                                  
Number of securities called by warrants (in shares)               91,350   91,350 91,350       12,000 79,350  
Exercise price of warrants or rights (in dollars per share) | $ / shares               $ 1.75   $ 1.75 $ 1.75       $ 1.75 $ 1.75  
Warrants outstanding | $               $ 103,006   $ 103,006 $ 103,006            
Unamortized discount remaining | $               $ 74,532   $ 74,532 $ 74,532            
Fifth Note                                  
Number of securities called by warrants (in shares)                         300,000 685,000      
Exercise price of warrants or rights (in dollars per share) | $ / shares                         $ 1.75 $ 1.75      
Term of warrants and rights outstanding                           5 years      
Warrants Issued to Underwriters                                  
Number of securities called by warrants (in shares)           152,081                      
Exercise price of warrants or rights (in dollars per share) | $ / shares           $ 6.00                      
Term of warrants and rights outstanding           5 years                      
Warrants Issued in Private Investment in Public Equity Offering                                  
Number of securities called by warrants (in shares)       472,500                          
Exercise price of warrants or rights (in dollars per share) | $ / shares     $ 16.00 $ 14.00                          
Term of warrants and rights outstanding       5 years                          
Warrants outstanding | $       $ 4,420,503                          
Number of securities called by each warrant or right (in shares)       1                          
Warrants Issued in Private Investment in Public Equity Offering | Measurement Input, Discount Rate                                  
Warrants outstanding, measurement input       0.0185                          
Warrants Issued in Private Investment in Public Equity Offering | Measurement Input, Expected Term                                  
Warrants outstanding, measurement input       5                          
Warrants Issued in Private Investment in Public Equity Offering | Measurement Input, Price Volatility                                  
Warrants outstanding, measurement input       0.85                          
Warrants Issued in Private Investment in Public Equity Offering | Measurement Input, Expected Dividend Payment                                  
Warrants outstanding, measurement input       0                          
Warrants Issued in Private Investment in Public Equity Offering | Measurement Input, Share Price                                  
Warrants outstanding, measurement input       14.30                          
Minimum | Measurement Input, Discount Rate                                  
Warrants outstanding, measurement input           0.025                      
Minimum | Measurement Input, Price Volatility                                  
Warrants outstanding, measurement input           0.84                      
Maximum | Measurement Input, Discount Rate                                  
Warrants outstanding, measurement input           0.028                      
Maximum | Measurement Input, Price Volatility                                  
Warrants outstanding, measurement input           0.85                      
Restricted Stock                                  
Grants of restricted stock in period (in shares)                     200,000            
Shares vested in period (in shares)                   29,166 156,666            
Unvested shares remaining (in shares)               170,834   170,834 170,834     127,500      
Stock-based compensation expense | $               $ 166,289 $ 142,634   $ 763,320 $ 427,902          
Unamortized expense remaining | $               1,809,135   $ 1,809,135 $ 1,809,135            
Restricted Stock | Share-based Payment Arrangement, Tranche One                                  
Shares vested in period (in shares)         25,000                        
Award vesting period                     120 days            
Restricted Stock | Share-based Payment Arrangement, Tranche Two                                  
Shares vested in period (in shares)                     175,000            
Award vesting period         4 months                        
Share-based Payment Arrangement, Option                                  
Stock-based compensation expense | $               495,437 $ 171,330   $ 1,096,480 $ 233,303          
Unamortized expense remaining | $               $ 3,670,583   $ 3,670,583 $ 3,670,583            
Expiration term period                     10 years            
Aggregate grant date fair value | $                     $ 2,446,102            
Fair value assumptions, expected dividend payments | $                     $ 0            
Share-based Payment Arrangement, Option | Minimum                                  
Fair value assumptions discount rate                     1.76%            
Fair value assumptions, expected term                     5 years 3 months 7 days            
Fair value assumptions, expected volatility rate                     84.30%            
Share price (in dollars per share) | $ / shares               $ 1.75   $ 1.75 $ 1.75            
Share-based Payment Arrangement, Option | Maximum                                  
Fair value assumptions discount rate                     2.53%            
Fair value assumptions, expected term                     6 years 3 months            
Fair value assumptions, expected volatility rate                     85.10%            
Share price (in dollars per share) | $ / shares               $ 17.50   $ 17.50 $ 17.50            
Share-based Payment Arrangement, Option | Share-based Payment Arrangement, Tranche One                                  
Award vesting period 42 months                                
Award vesting rights, percentage                     25.00%            
Share-based Payment Arrangement, Option | Share-based Payment Arrangement, Tranche Two                                  
Award vesting period                     1 year            
Award vesting rights, percentage                     25.00%            
Three Consultants | Restricted Stock                                  
Grants of restricted stock in period (in shares)         200,000                        
Certain Individuals                                  
Granted (in shares)                     608,550            
Grants in period, weighted average exercise price (in dollars per share) | $ / shares                     $ 5.70            
2012 Long Term Incentive Plan                                  
Common stock, capital shares reserved for future issuance (in shares)                                 789,745
Number of shares remaining (in shares)               14,745   14,745 14,745            
2018 Stock Plan                                  
Common stock, capital shares reserved for future issuance (in shares)               3,400,000   3,400,000 3,400,000            
Number of shares remaining (in shares)               571,450   571,450 571,450            
Conversion of Preferred Stock To Common Stock                                  
Issuance of common shares for extinguishment of preferred shares (in shares)             2,534,766                    
Conversion of Accrued Dividends Into Common Stock                                  
Issuance of common shares for extinguishment of preferred shares (in shares)             954,696                    
Series A Preferred Stock                                  
Preferred stock par value (in dollars per share) | $ / shares               $ 0.001   $ 0.001 $ 0.001            
Preferred stock issued (in shares)               0   0 0     416,666      
Preferred stock, shares outstanding (in shares)               0   0 0     416,666      
Preferred stock dividend rate, percentage                     8.00%            
Preferred stock dividend rate, (in dollars per share) | $ / shares                     $ 4.80            
Series B Preferred Stock                                  
Preferred stock par value (in dollars per share) | $ / shares                           $ 0.001      
Preferred stock issued (in shares)               0   0 0     2,118,100      
Preferred stock, shares outstanding (in shares)               0   0 0     2,118,100      
Preferred stock dividend rate, (in dollars per share) | $ / shares                     $ 6.61            
Preferred stock conversion price (in dollars per share) | $ / shares               $ 6.61   $ 6.61 $ 6.61            
Dividends payable for preferred stock | $           $ 4,773,480               $ 4,613,261