Quarterly report pursuant to Section 13 or 15(d)

Description of the Business and Liquidity (Details Narrative)

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Description of the Business and Liquidity (Details Narrative) - USD ($)
 1 Months Ended 6 Months Ended 12 Months Ended
May 31, 2017
Jun. 30, 2018
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
Cumulative net loss   $ (104,553,570) $ (101,036,117)    
Cash and cash equivalents   6,697,370 9,289,831 $ 1,969,597 $ 3,315,774
2017 Private Placement [Member]          
Proceeds from issuance of private placement $ 13,250,000        
Agents' fees and offering expenses $ 1,300,000        
12% Junior Secured Notes Payable 2014 [Member]          
Debt face amount   $ 1,975,000 $ 1,975,000    
Maturity date   Mar. 25, 2019 Mar. 25, 2019    
Notes Payable [Member]          
Debt face amount   $ 4,000,000      
Notes Payable Matures December 2018 [Member] | Notes Payable [Member]          
Debt face amount   $ 2,000,000      
Maturity date   Dec. 31, 2018      
Notes Payable Matures March 2019 [Member] | Notes Payable [Member]          
Debt face amount   $ 2,000,000      
Maturity date   Mar. 31, 2019