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Share-Based Payments - Summary of Share-Based Compensation Expense (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2018
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   $ 9,097 $ 0 $ 18,525 $ 0
Allocated Share-based Compensation Expense, Before Capitalization   15,056 603 28,782 1,294
Less amount capitalized   (879) 0 (1,506) 0
Share-based compensation expense   14,177 603 27,276 1,294
Total unrecognized compensation expense   119,500   $ 119,500  
Compensation expense recognition period (in years)       2 years 9 months  
Time-Based LTIP Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   2,895 0 $ 5,252 0
Compensation expense recognition period (in years) 4 years        
Performance-Based LTIP Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   1,350 0 2,507 0
Compensation expense recognition period (in years) 4 years        
LTIP Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   794 0 794 0
Other Equity Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   920 603 1,704 1,294
Share-based compensation expense - other          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   5,959 603 10,257 1,294
Formation Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   1,239 0 2,817 0
LTIP and OP Units (1)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   7,858 0 15,708 0
Share-based compensation related to Formation Transaction          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation related to Formation Transaction   $ 9,097 $ 0 $ 18,525 $ 0