Business of Organization - Additional Information (Details) - property	Sep. 30, 2020	Dec. 31, 2019
Business And Organization [Line Items]
Percentage of operating partnership held	73.80%	72.60%
Operating Property
Business And Organization [Line Items]
Number of real estate properties	52
Development Property
Business And Organization [Line Items]
Number of real estate properties	4
General Partner
Business And Organization [Line Items]
Percentage of operating partnership held	0.10%