XML 102 R89.htm IDEA: XBRL DOCUMENT v3.21.2
Stock-based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award        
Employee stock compensation $ 5,840 $ 4,791 $ 15,718 $ 14,409
Existing and newly elected board member        
Share-based Compensation Arrangement by Share-based Payment Award        
Award vesting period (in years)     3 years  
Employees        
Share-based Compensation Arrangement by Share-based Payment Award        
Award vesting period (in years)     3 years  
OPP plan | Tranche one        
Share-based Compensation Arrangement by Share-based Payment Award        
Award vesting period (in years)     3 years  
Award vesting percentage after initial performance period     50.00%  
OPP plan | Tranche two        
Share-based Compensation Arrangement by Share-based Payment Award        
Award vesting period (in years)     3 years  
Award vesting rights     50.00%  
Award mandatory holding period (in years)     2 years  
PSU plan 2020        
Share-based Compensation Arrangement by Share-based Payment Award        
Post vesting period (in years)     2 years  
PSU plan 2020 | Tranche one        
Share-based Compensation Arrangement by Share-based Payment Award        
Award performance period (in years)     3 years  
PSU plan 2020 | Tranche two        
Share-based Compensation Arrangement by Share-based Payment Award        
Award vesting period (in years)     3 years  
Award performance period (in years)     1 year