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Stockholders' Equity - Non-Vested Options (Details)
 12 Months Ended
Dec. 31, 2020
$ / shares
shares
Number of Options  
Beginning Balance (in shares) | shares 4,551,500
Granted (in shares) | shares 531,250
Vested (in shares) | shares (444,083)
Forfeited or Canceled (in shares) | shares (522,500)
Ending Balance (in shares) | shares 4,116,167
Weighted Average Grant Date Fair Value  
Beginning Balance (in dollars per share) | $ / shares $ 0.18
Granted (in dollars per share) | $ / shares 0.14
Vested (in dollars per share) | $ / shares 0.58
Forfeited or Canceled (in dollars per share) | $ / shares 0.65
Ending Balance (in dollars per share) | $ / shares $ 0.08