Consolidated Variable Interest Entities, Schedule of Variable Interest Entities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Investment property, net	$ 10,394,052	$ 9,715,791
Other Assets	324,278	270,691
Secured Debt	3,457,734	3,489,983
Other Liabilities	184,846	134,650
Liabilities	5,099,563	5,314,879
Consolidated VIEs (fully attributable to consolidated VIEs; see Note 7)	$ 17,751	$ 16,084
VIE as a Percentage of Consolidated Assets	4.50%	4.10%
VIE as a Percentage of Consolidated Liabilities	3.00%	2.00%
VIE as a Percentage of Total Equity	1.00%
Assets	$ 12,040,990	$ 11,206,586
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Investment property, net	508,055	438,918
Other Assets	32,817	24,554
Secured Debt	74,571	47,706
Preferred OP units - mandatorily redeemable	35,249	35,249
Other Liabilities	44,944	21,957
Liabilities	154,764	104,912
Equity Interests	27,491	28,469
Consolidated VIEs (fully attributable to consolidated VIEs; see Note 7)	17,751	16,084
Total Liabilities and Stockholder's Equity	200,006	149,465
Assets	$ 540,872	$ 463,472