Business and Organization - Schedule of Properties under development, redevelopment or not yet stabilized (Details)	Dec. 31, 2019
Wills Wharf | Office
Business and Organization
Ownership interest percentage in property	100.00%
Premier Retail | Retail
Business and Organization
Ownership interest percentage in property	100.00%
Summit Place | Multifamily
Business and Organization
Ownership interest percentage in property	90.00%
The Cosmopolitan | Multifamily
Business and Organization
Ownership interest percentage in property	100.00%