Annual report pursuant to Section 13 and 15(d)

Restricted Stock Units - Additional Information (Details)

v3.20.4
Restricted Stock Units - Additional Information (Details)
1 Months Ended 12 Months Ended
Feb. 01, 2021
shares
Dec. 16, 2020
Employee
shares
Nov. 05, 2020
Employee
AdvisoryBoardMember
Director
shares
Aug. 06, 2020
Employee
shares
May 31, 2020
Manager
AdvisoryBoardMember
shares
Mar. 24, 2020
shares
Feb. 01, 2020
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted   95,500 233,810 500,200 447,714 113,506 135,000      
Award vesting period   3 years 3 years 3 years 3 years 3 years 9 months      
Shares granted to number of new managers | Manager         3          
Shares granted to number of new advisory board members | AdvisoryBoardMember     4   2          
Shares granted to number of employees | Employee   11 25 69            
Shares granted to number of directors | Director     5              
Within February 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage           25.00% 40.00%      
Three-year Period Starting from February 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage           75.00%        
Within May 1, 2021 and Three-year Period Starting from May 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted         435,714          
Within May 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage         25.00%          
Three-year Period Starting from May 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage         75.00%          
Within August 1, 2020                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares vested         8,000          
Within November 1, 2020                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares vested         4,000          
Within August 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage       25.00%            
Three-year Period Starting from August 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage       75.00%            
Within November 1, 2021 and Three-year Period Starting from November 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted     66,000              
Within November 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage     25.00%              
Three-year Period Starting from November 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage     75.00%              
Within February 1, 2021                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted     167,810              
Within February 1, 2022                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage   25.00%                
Three-year Period Starting from February 1, 2022                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage   75.00%                
Restricted Stock Units (RSUs)                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted               3,336,095 1,390,730  
Aggregate grant date fair value of shares granted | $               $ 27,500,000    
Grant date fair value per share | $ / shares               $ 8.25 $ 6.41  
Shares vested                 1,152,210  
Compensation expense | $                 $ 19,117,000 $ 996,000
Unrecognized compensation cost | $                 $ 13,600,000  
Unrecognized compensation cost weighted-average remaining period                 1 year 4 months 28 days  
Number of non-vested shares               3,336,095 3,331,037 3,336,095
Restricted Stock Units (RSUs) | 2019 Equity Incentive Plan                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Number of non-vested shares                 530,667  
Restricted Stock Units (RSUs) | Subsequent Event                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted 2,020,411                  
Award vesting period 3 years                  
Restricted Stock Units (RSUs) | Vest in One Year                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted                   931,243
Restricted Stock Units (RSUs) | 2019 Targeted Adjusted EBITDA is Achieved                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted                   124,723
Restricted Stock Units (RSUs) | 2020 Targeted Adjusted EBITDA is Achieved                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Shares granted                   124,718
Restricted Stock Units (RSUs) | Within February 1, 2021 | Subsequent Event                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage 25.00%                  
Restricted Stock Units (RSUs) | Three-year Period Starting from February 1, 2021 | Subsequent Event                    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                    
Award vesting rights, percentage 75.00%