Basis of Presentation and Summary of Significant Accounting Policies - Summary of Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Notes receivable	$ 37,424	$ 37,045
Deferred costs, deposits, and other	17,284	17,557
Interest rate options	44,241	13,315
Corporate fixed assets	11,986	12,860
Unconsolidated real estate partnerships	12,927	12,829
Investment in IQHQ	12,500	12,500
Prepaid expenses and other	9,331	10,493
Intangible lease assets, net	5,745	7,264
Due from affiliates	23,959	4,333
Accounts receivable, net of allowances of $1,693 and $1,467 as of March 31, 2021 and December 31, 2020, respectively	3,078	2,660
Total other assets, net	$ 178,475	$ 130,856