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Stockholders' Equity - Summary of Warrant Activity (Details) - $ / shares
 12 Months Ended
Aug. 03, 2018
Dec. 31, 2019
Dec. 31, 2018
Number of Shares, Exercisable at end of year   2,882,055  
Common Stock Financing Warrant [Member]      
Number of Shares, outstanding, at beginning of year   3,949,018 1,289,172
Number of Shares, Issued     2,861,558
Number of Shares, Exercised   (1,066,963) (842,117)
Number of Shares, Issued as result of the reset provision on August 3, 2018 640,405    
Number of Shares, outstanding at end of year   2,882,055 3,949,018
Number of Shares, Exercisable at end of year   2,882,055  
Weighted Average Exercise Price, outstanding, at beginning of year   $ 0.64 $ 0.29
Weighted Average Exercise Price, Issued     1.17
Weighted Average Exercise Price, Exercised     0.20
Weighted Average Exercise Prices, Issued as result of the reset provision on August 3, 2018 $ 0.50    
Weighted Average Exercise Price, outstanding, at end of year   0.80 $ 0.64
Weighted Average Exercise Price, Exercisable at end of year   $ 0.80  
Weighted Average Remaining Contractual Life, Outstanding at end of year   3 years 11 months 12 days 4 years 9 months 22 days
Weighted Average Remaining Contractual Life, Exercisable at end of year   3 years 11 months 12 days