Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stockholders' Deficit (Details Textual)

v3.19.2
Note 6 - Stockholders' Deficit (Details Textual)
3 Months Ended 6 Months Ended
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
Jun. 30, 2019
USD ($)
$ / shares
shares
Mar. 31, 2019
shares
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
$ / shares
shares
Jun. 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, Shares Authorized                       2,534,766      
Preferred Stock, Par or Stated Value Per Share | $ / shares                       $ 0.001      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period       127,500                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                 589,550            
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares                 $ 5.32            
Share Price | $ / shares       $ 4.87                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       1,228,431                      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares           $ 6.63     $ 6.63     $ 1.75      
Warrants and Rights Outstanding | $       $ 1,636,232                      
Private Investment in Public Equity Offering [Member]                              
Number of Units Issued 675,000 675,000                          
Number of Common Stock Per Unit 1 1                          
Number of Warrants Per Unit 0.7 0.7                          
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right 1                            
Convertible Debt [Member] | Fifth Note [Member]                              
Debt Instrument, Unamortized Discount, Total | $       $ 664,953                      
Measurement Input, Expected Term [Member]                              
Warrants and Rights Outstanding, Measurement Input       5                      
Measurement Input, Expected Dividend Payment [Member]                              
Warrants and Rights Outstanding, Measurement Input       0                      
Measurement Input, Share Price [Member]                              
Warrants and Rights Outstanding, Measurement Input       1.67                      
Warrant Issued Under Fourth Note [Member]                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           91,350     91,350       12,000 79,350  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares           $ 1.75     $ 1.75       $ 1.75 $ 1.75  
Warrants and Rights Outstanding | $           $ 103,006     $ 103,006            
Debt Instrument, Unamortized Discount, Total | $           $ 74,532     74,532            
Fifth Note [Member]                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                     300,000 685,000      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares                     $ 1.75 $ 1.75      
Warrants and Rights Outstanding, Term                       5 years      
Warrants Issued to Underwriters [Member]                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       152,081                      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares       $ 6                      
Warrants and Rights Outstanding, Term       5 years                      
Warrants Issued in Private Investment in Public Equity Offering [Member]                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   472,500                          
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 16 $ 16                          
Warrants and Rights Outstanding, Term   5 years                          
Warrants and Rights Outstanding | $   $ 4,420,503                          
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right   1                          
Warrants Issued in Private Investment in Public Equity Offering [Member] | Measurement Input, Discount Rate [Member]                              
Warrants and Rights Outstanding, Measurement Input   0.0185                          
Warrants Issued in Private Investment in Public Equity Offering [Member] | Measurement Input, Expected Term [Member]                              
Warrants and Rights Outstanding, Measurement Input   5                          
Warrants Issued in Private Investment in Public Equity Offering [Member] | Measurement Input, Price Volatility [Member]                              
Warrants and Rights Outstanding, Measurement Input   0.85                          
Warrants Issued in Private Investment in Public Equity Offering [Member] | Measurement Input, Expected Dividend Payment [Member]                              
Warrants and Rights Outstanding, Measurement Input   0                          
Warrants Issued in Private Investment in Public Equity Offering [Member] | Measurement Input, Share Price [Member]                              
Warrants and Rights Outstanding, Measurement Input   14.3                          
Minimum [Member] | Measurement Input, Discount Rate [Member]                              
Warrants and Rights Outstanding, Measurement Input       0.025                      
Minimum [Member] | Measurement Input, Price Volatility [Member]                              
Warrants and Rights Outstanding, Measurement Input       0.84                      
Maximum [Member] | Measurement Input, Discount Rate [Member]                              
Warrants and Rights Outstanding, Measurement Input       0.028                      
Maximum [Member] | Measurement Input, Price Volatility [Member]                              
Warrants and Rights Outstanding, Measurement Input       0.85                      
Restricted Stock [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period           200,000                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period           16,668 127,500                
Share-based Payment Arrangement, Expense | $           $ 332,577   $ 142,634 597,031 $ 285,268          
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $           1,975,424     1,975,424            
Restricted Stock [Member] | Share-based Payment Arrangement, Tranche One [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period     25,000                        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     120 days                        
Restricted Stock [Member] | Share-based Payment Arrangement, Tranche Two [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period     175,000                        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     3 years 180 days                        
Share-based Payment Arrangement, Option [Member]                              
Share-based Payment Arrangement, Expense | $           353,451   $ 59,055 601,043 $ 61,975          
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $           $ 3,924,786     $ 3,924,786            
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period                 10 years            
Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture, Total | $                 $ 2,204,866            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments | $                 $ 0            
Share-based Payment Arrangement, Option [Member] | Minimum [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Discount Rate                 1.76%            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term                 5 years 98 days            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate                 84.30%            
Share Price | $ / shares           $ 1.75     $ 1.75            
Share-based Payment Arrangement, Option [Member] | Maximum [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Discount Rate                 2.53%            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term                 6 years 91 days            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate                 85.10%            
Share Price | $ / shares           $ 14.62     $ 14.62            
Share-based Payment Arrangement, Option [Member] | Share-based Payment Arrangement, Tranche One [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 4 years            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage                 25.00%            
Share-based Payment Arrangement, Option [Member] | Share-based Payment Arrangement, Tranche Two [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 1 year            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage                 25.00%            
Three Consultants [Member] | Restricted Stock [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period     200,000                        
Certain Individuals [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                 589,500            
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares                 $ 5.32            
2012 Long Term Incentive Plan [Member]                              
Common Stock, Capital Shares Reserved for Future Issuance                             789,745
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant           14,745     14,745            
2018 Stock Plan [Member]                              
Common Stock, Capital Shares Reserved for Future Issuance           3,400,000     3,400,000            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant           590,450     590,450            
Conversion of Preferred Stock To Common Stock [Member]                              
Conversion of Stock, Shares Issued         2,534,766                    
Conversion of Accrued Dividends Into Common Stock [Member]                              
Conversion of Stock, Shares Issued         954,696                    
Series A Preferred Stock [Member]                              
Preferred Stock, Shares Authorized                   416,666      
Preferred Stock, Par or Stated Value Per Share | $ / shares           $ 0.001     $ 0.001     $ 0.001      
Preferred Stock, Shares Outstanding, Ending Balance                   416,666      
Preferred Stock, Shares Issued, Total                   416,666      
Preferred Stock, Dividend Rate, Percentage                 8.00%            
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ / shares                 $ 4.80            
Series B Preferred Stock [Member]                              
Preferred Stock, Shares Authorized                   2,118,100      
Preferred Stock, Par or Stated Value Per Share | $ / shares           $ 0.001     $ 0.001     $ 0.001      
Preferred Stock, Shares Outstanding, Ending Balance                   2,118,100      
Preferred Stock, Shares Issued, Total                   2,118,100      
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ / shares                 $ 6.61            
Convertible Preferred Stock, Conversion Price | $ / shares           $ 6.61     $ 6.61            
Dividends Payable | $       $ 4,773,480               $ 4,613,261