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Share-Based Payments - LTIP Units and Time-Based LTIP Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 30, 2021
Jan. 31, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]              
Compensation expense recognition period (in years)         1 year 9 months 18 days    
Share-based compensation expense     $ 13,656 $ 20,812 $ 26,892 $ 38,174  
Time-Based LTIP Units              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]              
Vesting period         4 years    
Compensation expense recognition period (in years)         4 years    
Unvested Shares              
Granted (in shares)         486,908    
Weighted Average Grant-Date Fair Value              
Granted         $ 29.21    
LTIP Units              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]              
Share-based compensation expense             $ 4,800
Unvested Shares              
Fully vested grants (in shares)   163,065          
Weighted Average Grant-Date Fair Value              
Granted   $ 29.54          
LTIP Units and Time-Based LTIP Units              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]              
Fair value of awards on grant date         $ 20,900    
Trustees | LTIP Units              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]              
Fair value of awards on grant date $ 1,900            
Unvested Shares              
Granted (in shares) 71,792            
Minimum | Time-Based LTIP Units              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]              
Expected volatility         34.00%    
Risk-free interest rate         0.10%    
Post-grant restriction periods         2 years    
Maximum | Time-Based LTIP Units              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]              
Expected volatility         39.00%    
Risk-free interest rate         0.40%    
Post-grant restriction periods         3 years