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Stockholders' Equity - Summary of Warrant Activity (Details) - $ / shares
 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Equity [Abstract]    
Number of Shares, Warrants Outstanding, Beginning balance 3,050,600 1,645,500
Number of Shares, Warrants Granted 640,240 1,607,000
Number of Shares, Warrants Exercised (70,230) (24,000)
Number of Shares, Warrants Forfeited or Cancelled
Number of Shares, Warrants Outstanding, Ending balance 3,620,610 3,228,500
Weighted Average Exercise Price, Warrants outstanding, Beginning balance $ 2.75 $ 3.97
Weighted Average Exercise Price, Warrants Granted 1.60 1.30
Weighted Average Exercise Price, Warrants Exercised 1.08 2.00
Weighted Average Exercise Price, Warrants Forfeited or cancelled
Weighted Average Exercise Price, Warrants outstanding, Ending balance $ 2.58 $ 2.65
Weighted Average Remaining Contractual Life (Years), Warrants outstanding, Beginning balance 3 years 10 months 10 days 4 years 1 month 9 days
Weighted Average Remaining Contractual Life (Years), Warrants Grants 4 years 8 months 5 days 4 years 7 months 21 days
Weighted Average Remaining Contractual Life (Years), Warrants outstanding, Ending balance 3 years 4 months 13 days 4 years 1 month 20 days