Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Share-Based Compensation - Schedule of Assumptions Used to Determine Grant Date Fair Value of Employee and Director Options Granted (Details) - $ / shares
2 Months Ended 3 Months Ended
Jan. 21, 2020
Mar. 31, 2020
Mar. 31, 2020
Mar. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Volatility 80.00% 100.00% 90.30%  
Volatility, minimum       69.50%
Volatility, maximum       70.20%
Expected term in years 4 years 11 months 23 days 4 years 9 months 14 days 6 years 3 months 6 years 3 months
Dividend rate 0.00% 0.00% 0.00% 0.00%
Risk-free interest rate 1.57% 0.37% 0.78%  
Risk-free interest rate, minimum       2.44%
Risk-free interest rate, maximum       2.57%
Share price   $ 2.03 $ 2.03  
Fair value of option on grant date   $ 1.52 $ 1.52  
Minimum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share price       $ 5.80
Fair value of option on grant date       3.74
Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share price       6.80
Fair value of option on grant date       $ 4.41