XML 73 R63.htm IDEA: XBRL DOCUMENT v3.22.2
Stock-based Compensation - Restricted Share Units (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2022
Jan. 31, 2022
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Non-cash share compensation           $ 8,051 $ 7,175
2013 Plan | Restricted share units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of dividend equivalent included in each award (in shares) 1            
Non-cash share compensation       $ 2,800 $ 2,500 6,100 $ 5,300
Unrecognized compensation expense       $ 15,500   $ 15,500  
2013 Plan | Performance based restricted stock units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Performance conditions grant date fair value (in dollars per share) $ 16.37            
Granted (in dollars per share) 20.51            
2013 Plan | Market Based Restricted Stock Units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (in dollars per share) $ 30.17            
Officers and Certain Employees | 2013 Plan | Restricted share units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (in shares) 299,019            
Vesting period 3 years 1 year          
Officers and Certain Employees | 2013 Plan | Performance based restricted stock units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage           70.00%  
Percentage of restricted share units issued to trustees           100.00%  
Officers and Certain Employees | 2013 Plan | Market Based Restricted Stock Units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage           30.00%  
Trustees | 2013 Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (in shares)   7,800          
Trustees | 2013 Plan | Restricted share units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (in shares) 56,204            
Vesting period     2 years        
Number of dividend equivalent included in each award (in shares)   1          
Trustees | 2013 Plan | Performance based restricted stock units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Performance conditions grant date fair value (in dollars per share)   $ 18.83