Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (DEFICIT) (Parentheticals)

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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (DEFICIT) (Parentheticals) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Common stock issued upon exercise of warrants $ 4.17   $ 4.02 $ 3.75
Common stock issued upon exercise of options $ 4.76   $ 4.76  
Series C Preferred Stock [Member]        
Common stock issued upon conversion of preferred stock and accrued dividends (in Dollars) $ 3.75 $ 3.75 $ 3.75 $ 3.75
Series C Preferred Stock [Member] | Settlement of Preferred Stock [Member]        
Common stock issued upon conversion of preferred stock and accrued dividends (in Dollars) $ 6.53 $ 4.08 $ 6.53 $ 4.025
Common Stock [Member]        
Common stock issued upon exercise of warrants   $ 3.75 $ 4.09  
Preferred Stock [Member] | Series D Preferred Stock [Member]        
Common stock issued upon conversion of preferred stock and accrued dividends   3.75   $ 3.75
Preferred Stock [Member] | Series D Preferred Stock [Member] | Settlement of Preferred Stock [Member]        
Common stock issued upon conversion of preferred stock and accrued dividends   3.40   3.40
Preferred Stock [Member] | Series D Preferred Stock [Member] | Series E Preferred Stock [Member]        
Common stock issued upon conversion of preferred stock and accrued dividends   $ 3.73   $ 3.73