Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Schedule of Assumptions Used to Determine Grant Date Fair Value of Employee and Director Options Granted (Details)

v3.20.4
Share-Based Compensation - Schedule of Assumptions Used to Determine Grant Date Fair Value of Employee and Director Options Granted (Details) - $ / shares
11 Months Ended 12 Months Ended
Jan. 21, 2020
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Volatility 80.00% 120.00%     60.00%
Volatility, minimum     90.30% 68.90%  
Volatility, maximum     99.50% 74.50%  
Expected term in years 4 years 11 months 23 days 4 years 14 days     6 years 3 months
Dividend rate 0.00% 0.00% 0.00% 0.00% 0.00%
Risk-free interest rate 1.57% 0.26%      
Risk-free interest rate, minimum     0.18% 1.73% 2.16%
Risk-free interest rate, maximum     0.78% 2.57% 2.91%
Minimum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Expected term in years     5 years 6 months 5 years 6 months  
Share price   $ 1.68 $ 1.68 $ 3.55 $ 7.06
Fair value of option on grant date   1.27 $ 1.27 $ 2.37 4.41
Maximum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Expected term in years     6 years 3 months 6 years 3 months  
Share price   2.03 $ 2.03 $ 6.80 13.00
Fair value of option on grant date   $ 1.52 $ 1.52 $ 4.41 $ 7.49