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Warrants - Summary of Warrant Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Warrants and Rights Note Disclosure [Abstract]    
Number of Warrants Issued, Warrants Outstanding, Beginning Balance 1,593,162 3,058,402
Number of Warrants Issued, Warrants Issued 200,000 190,114
Number of Warrants Issued, Warrants cancelled in exchange for common stock   (1,641,427)
Number of Warrants Issued, Warrants Expired (1,167,064) (13,927)
Number of Warrants Issued, Warrants Outstanding, Ending Balance 626,098 1,593,162
Weighted Average Exercise Price, Warrants Outstanding, Beginning Balance $ 5.36 $ 5.29
Weighted Average Exercise Price, Warrants Issued 0.01 2.63
Weighted Average Exercise Price, Warrants cancelled in exchange for common stock   3.04
Weighted Average Exercise Price, Warrants Expired 6.32 226.24
Weighted Average Exercise Price, Warrants Outstanding and Exercisable, Ending Balance $ 1.87 $ 5.36
Aggregate Intrinsic Value of Outstanding Warrants $ 340,000  
Weighted average remaining contractual terms (years) 1 year 10 months 14 days