Quarterly report pursuant to Section 13 or 15(d)

Liquidity, Financial Condition, and Going Concern (Details)

v3.19.1
Liquidity, Financial Condition, and Going Concern (Details) - USD ($)
Mar. 31, 2019
Jan. 28, 2019
Dec. 31, 2018
Mar. 31, 2018
Dec. 31, 2017
Cash and cash equivalents $ 1,016,019   $ 225,390 $ 5,257,534 $ 41,651,965
Working capital 18,561,000        
Stockholders' equity 8,769,373   (4,491,012) $ (43,235,055) $ (49,627,399)
Accumulated deficit 210,728,202   $ 197,199,197    
Total investment 3,000,000        
Senior Secured Convertible Promissory Notes [Member] | Investors [Member]          
Debt instrument face amount $ 3,358,333 $ 3,358,333