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
May 31, 2017
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Cumulative net loss   $ (97,528,915)   $ (93,868,764)  
Proceeds from issuance of private placement   13,250,000    
Cash and cash equivalents   $ 12,740,583 $ 2,015,982 $ 3,315,774 $ 5,408,523
2017 Private Placement [Member]          
Proceeds from issuance of private placement $ 13,250,000        
Agents' fees and offering expenses $ 1,300,000