Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation (Details)

v3.21.2
Share-Based Compensation (Details)
$ / shares in Units, $ in Thousands
9 Months Ended
Feb. 03, 2021
shares
Jan. 01, 2021
USD ($)
Percentile_Rank
$ / shares
shares
Sep. 30, 2021
USD ($)
form
$ / shares
shares
Restricted shares      
Share-Based Compensation      
Stock awards granted (in shares or units) | shares     165,770
Aggregate grant date fair value | $     $ 4,400
Aggregate weighted average grant date fair value (in dollars per share) | $ / shares     $ 26.25
Shares vested (in shares) | shares     157,066
Weighted average fair value of shares vested (in dollars per share) | $ / shares     $ 25.88
Aggregate intrinsic value of awards upon vesting | $     $ 4,100
PIUs      
Share-Based Compensation      
Number of forms of profit interest units | form     2
Performance-based PIU's      
Share-Based Compensation      
Aggregate grant date fair value | $   $ 3,400  
Potential earned PSUs payout for defined levels of performance under awards      
Earned PB-PIUs payout (as a percent of PB-PIUs granted) on 75th or greater percentile rank   100.00%  
Earned PB-PIUs payout (as a percent of PB-PIUs granted) on 50th percentile rank   50.00%  
Earned PB-PIUs payout (as a percent of PB-PIUs granted) on 25th percentile rank   25.00%  
Earned PB-PIUs granted on percentile rank below 25th (as a percent)   0.00%  
The number of percentile ranks to fall between to earn interpolated PB-PIUs between such percentile ranks, conditioned on the percentile rank exceeding 25% | Percentile_Rank   2  
Percent of award distribution rights   10.00%  
Award performance period   3 years  
Assumptions used to value stock awards      
Baseline value per common share (in dollars per share) | $ / shares   $ 26.08  
Expected volatility of common shares (as a percent)   34.70%  
Risk-free interest rate (as a percent)   0.18%  
Performance-based PIU's | Target Level      
Share-Based Compensation      
Aggregate weighted average grant date fair value (in dollars per share) | $ / shares   $ 30.03  
Deferred Share Awards      
Share-Based Compensation      
Stock awards granted (in shares or units) | shares     3,416
Aggregate grant date fair value | $     $ 93
Aggregate weighted average grant date fair value (in dollars per share) | $ / shares     $ 27.12
Executives | 2018 PSU Grants | Performance share units      
Share-Based Compensation      
Shares issued (in shares) | shares 93,824    
Percentage of target 200.00%    
Senior Management Team Members and Certain Non-Employee Trustees | Time-based PIU's      
Share-Based Compensation      
Stock awards granted (in shares or units) | shares     93,983
Aggregate grant date fair value | $     $ 2,500
Aggregate weighted average grant date fair value (in dollars per share) | $ / shares     $ 26.16
Shares vested (in shares) | shares     40,591
Weighted average fair value of shares vested (in dollars per share) | $ / shares     $ 25.14
Aggregate intrinsic value of awards upon vesting | $     $ 1,100
Senior Management Team Members | Time-based PIU's      
Share-Based Compensation      
Award vesting period     3 years
Senior Management Team Members | Performance-based PIU's      
Share-Based Compensation      
Stock awards granted (in shares or units) | shares   227,544  
Award vesting period   3 years  
Certain Non-Employee Trustees | Restricted shares      
Share-Based Compensation      
Award vesting period     1 year
Certain Non-Employee Trustees | Time-based PIU's      
Share-Based Compensation      
Award vesting period     1 year
Certain Non-Employee Trustees | Deferred Share Awards      
Share-Based Compensation      
Award vesting period     1 year