v3.21.2
Stockholders' Equity - Variables Used in Estimating Fair Value of Stock Options (Details) - Employee Stock Option [Member]
9 Months Ended
Sep. 30, 2021
$ / shares
Stockholders Equity [Line Items]  
Expected volatility: 123.00%
Expected dividend yield: 0.00%
Annual average risk-free rate: 0.37%
Expected term: 5 years 4 months 17 days
Minimum  
Stockholders Equity [Line Items]  
Share price of the Company's Common Stock on the grant date: $ 1.26
Exercise price: 1.26
Maximum  
Stockholders Equity [Line Items]  
Share price of the Company's Common Stock on the grant date: 5.01
Exercise price: $ 5.01