Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Description of the Business and Summary of Significant Accounting Policies (Details Textual)

v3.19.2
Note 1 - Description of the Business and Summary of Significant Accounting Policies (Details Textual)
3 Months Ended 6 Months Ended
Jun. 19, 2019
USD ($)
$ / shares
shares
Jun. 16, 2019
USD ($)
$ / shares
shares
Feb. 19, 2019
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
$ / shares
shares
Mar. 31, 2019
USD ($)
Jun. 30, 2018
USD ($)
Mar. 31, 2018
USD ($)
Jun. 30, 2019
USD ($)
$ / shares
shares
Jun. 30, 2018
USD ($)
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
Amortization of Intangible Assets, Total       $ 0   $ 0   $ 0 $ 376    
Deferred Direct Issuance Costs, Proposed Offering       276,560       276,560      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total       $ 0   0   $ 0 $ 0    
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total | shares               2,824,550 2,235,000    
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants | shares               1,380,833 91,350    
Incremental Common Shares Attributable to Dilutive Effect of Nonvested Shares with Forfeitable Dividends | shares               183,332 227,500    
Incremental Common Shares Attributable to Conversion of Debt Securities, Total | shares               273,034      
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock | shares                 2,534,766    
Stock Issued During Period, Shares, New Issues | shares     2,172,591                
Shares Issued, Price Per Share | $ / shares     $ 5                
Proceeds from Issuance of Common Stock     $ 10,862,955                
Proceeds from Issuance of Common Stock, Net     9,700,000                
Debt Conversion, Original Debt, Amount     $ 11,784,987                
Debt Conversion, Converted Instrument, Shares Issued | shares     6,825,391                
Conversion of Accrued Dividends into Common Stock, Amount Converted     $ 4,773,480                
Conversion of Accrued Dividends into Common Stock, Shares Issued | shares     954,696                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | shares     127,500                
Common Stock, Shares, Outstanding, Ending Balance | shares     14,613,000 15,693,715       15,693,715   1,998,056  
Debt Instrument, Convertible, Threshold Percentage of Stock Ownership After Conversion     4.99%                
Convertible Debt, Total     $ 47,781                
Debt Instrument, Convertible, Number of Equity Instruments     273,034                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares       $ 6.63       $ 6.63   $ 1.75  
Net Income (Loss) Attributable to Parent, Total       $ (2,973,534) $ (3,208,345) (2,565,089) $ (1,351,665) $ (6,181,879) $ (3,916,754)    
Net Cash Provided by (Used in) Operating Activities, Total               (6,353,747) (2,797,746)    
Retained Earnings (Accumulated Deficit), Ending Balance       (48,473,373)     (33,208,004) (48,473,373)   $ (42,131,275) $ (31,536,339)
Working Capital       9,685,766       9,685,766      
Cash, Ending Balance       11,387,168       11,387,168      
Stockholders' Equity Attributable to Parent, Ending Balance       10,766,186 $ 4,411,740 $ (14,607,100) (12,026,707) 10,766,186 $ (14,607,100) (19,557,885) (10,500,595)
Number of Operating Segments         1            
Previously Reported [Member]                      
Retained Earnings (Accumulated Deficit), Ending Balance             (33,028,004)       (31,356,339)
Stockholders' Equity Attributable to Parent, Ending Balance             $ (11,846,707)       $ (10,320,595)
Warrants Issued in Private Investment in Public Equity Offering [Member]                      
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares   1                  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 16 $ 16                  
Warrants and Rights Outstanding, Term   5 years                  
Proceeds from Issuance or Sale of Equity, Total   $ 8,600,000                  
Private Investment in Public Equity Offering [Member]                      
Shares Issued, Price Per Share | $ / shares $ 14 $ 14                  
Number of Units Issued | shares 675,000 675,000                  
Number of Common Stock Per Unit | shares 1 1                  
Number of Warrants Per Unit | shares 0.7 0.7                  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares 1                    
Proceeds from Issuance or Sale of Equity, Total $ 9,450,000                    
Conversion of Preferred Stock into Common Stock [Member]                      
Conversion of Stock, Shares Issued | shares     2,534,766                
Trademarks [Member]                      
Finite-Lived Intangible Assets, Gross, Total       $ 89,409       $ 89,409   $ 84,942  
Minimum [Member]                      
Property, Plant and Equipment, Useful Life               3 years      
Maximum [Member]                      
Property, Plant and Equipment, Useful Life               5 years