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Stock-Based Compensation - Additional Information (Details) - $ / shares
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2020
Sep. 30, 2020
Sep. 30, 2020
Jan. 31, 2020
Mar. 31, 2018
2018 Equity Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares issued or transferred         3,570,000
2018 Equity Incentive Plan | Restricted Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares, forfeited   5,000 5,000    
Number of shares outstanding   653,950 653,950    
2018 Equity Incentive Plan | Restricted Stock Units | Employees and Directors          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares issued 658,950        
Estimated weighted average fair value, price per share $ 29.41        
Vesting interval period annually        
2018 Equity Incentive Plan | Restricted Stock Units | Employees          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Award vesting period 4 years        
2018 Equity Incentive Plan | Restricted Stock Units | Directors          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Award vesting period 12 months        
2020 Inducement Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares issued or transferred       3,000,000