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Net Loss Per Common Share - Reconciliation of Net Loss Per Share (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Numerator:    
Net loss $ (2,484,903) $ (2,774,180)
Denominator:    
Basic and diluted weighted average shares outstanding (in shares) 49,863,424 37,368,291
Net loss per common share:    
Net loss per common share – basic (in dollars per share) $ (0.05) $ (0.07)
Net loss per common share – diluted (in dollars per share) $ (0.05) $ (0.07)