XML 73 R46.htm IDEA: XBRL DOCUMENT v3.22.1
Equity - Stock Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 01, 2022
Mar. 18, 2022
Mar. 11, 2022
Mar. 31, 2022
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Restricted stock                
Stock-based incentive plan awards                
Compensation expense, net of capitalization         $ 2.4 $ 1.9    
Restricted Stock and Restricted Stock Units | Employees | Subsequent Event                
Stock-based incentive plan awards                
Vesting service period 3 years              
Awards granted (in units) 143,518              
Weighted average fair value of shares granted during the year (in dollars per share) $ 131.56              
2019 Stock Incentive Plan | Time Based Restricted Stock Units                
Stock-based incentive plan awards                
Vesting rights each year beginning 2022 (as a percent)               33.33%
Vesting service period         3 years   3 years 3 years
Awards granted (in units)         52,673   37,976 312,263
Grant Date Fair Value         $ 6.9   $ 4.3 $ 26.3
Weighted average fair value of shares granted during the year (in dollars per share)   $ 130.84 $ 130.05       $ 112.92 $ 84.37
LTIP programs                
Stock-based incentive plan awards                
Percent of distributions of Operating Partnership that participants are entitled to receive during performance period         10.00%      
Compensation expense, net of capitalization         $ 5.8 $ 4.6    
2019 LTIP program | LTIP Units                
Stock-based incentive plan awards                
Performance period         3 years      
Awards granted (in units)       72,442 72,442      
Grant Date Fair Value         $ 9.5      
Grant Date Target Value         $ 14.7      
2021 LTIP program | LTIP Units                
Stock-based incentive plan awards                
Performance period         3 years      
Grant Date Fair Value         $ 5.7      
Grant Date Target Value         $ 12.2      
2021 LTIP program | Time Based Restricted Stock Units | Maximum                
Stock-based incentive plan awards                
Grant Date Fair Value             $ 18.4  
2022 LTIP program | LTIP Units                
Stock-based incentive plan awards                
Performance period         3 years      
Grant Date Target Value         $ 13.7      
2022 LTIP program | LTIP Units | Maximum                
Stock-based incentive plan awards                
Grant Date Fair Value         $ 20.6