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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash Flows from Operating Activities:    
Net Loss $ (2,419,885) $ (4,749,739)
Reconciliation of net loss to net cash used in operating activities:    
Changes in fair value of warrant liabilities 3,000 2,996,000
Stock-based compensation 376,317 214,250
Changes in operating assets and liabilities:    
Prepaid expenses and deposits (107,362) 31,171
Accounts payable and accrued expenses 224,252 678,555
Net cash used in operating activities (1,923,678) (829,763)
Cash Flows from Financing Activities:    
Repayment of promissory note 0 (25,000)
Net cash used in financing activities 0 (25,000)
Net decrease in cash (1,923,678) (854,763)
Cash at beginning of period 7,851,243 6,576,564
Cash at end of period 5,927,565 5,721,801
Supplemental schedule of non-cash activities:    
Reclassification of accrued liability upon issuance of common shares relating to Dr. Glynn Wilson’s compensation $ 0 $ 191,000