Share-Based Payments - Summary of Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation related to Formation Transaction and special equity awards	$ 9,523	$ 9,097	$ 20,654	$ 18,525
Allocated Share-based Compensation Expense, Before Capitalization	16,324	15,056	33,656	28,782
Less amount capitalized	(799)	(879)	(1,542)	(1,506)
Share-based compensation expense	15,525	14,177	32,114	27,276
Total unrecognized compensation expense	109,200		$ 109,200
Compensation expense recognition period (in years)			2 years 6 months
Time-Based LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	2,840	2,895	$ 5,774	5,252
Performance-Based LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	1,980	1,350	$ 4,188	2,507
Compensation expense recognition period (in years)			4 years
Long-Term Incentive Partnership Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	1,000	794	$ 1,000	794
Other Equity Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	981	920	2,040	1,704
Share-based compensation expense - other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	6,801	5,959	13,002	10,257
Formation Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	1,229	1,239	2,889	2,817
OP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	6,813	7,788	14,744	15,569
LTIP Units Related to Formation Transaction And Other [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	115	70	223	139
Special Performance-Based LTIP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	640	0	1,284	0
Special Time-Based LTIP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	726	0	1,514	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 and special equity awards	$ 9,523	$ 9,097	$ 20,654	$ 18,525

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