Business of Organization - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2016
Business and Organization
Ownership interest percentage in properties	100.00%
Lightfoot Marketplace
Business and Organization
Ownership interest percentage in properties	60.00%
Increase in ownership interest due to certain events	70.00%
Johns Hopkins Village
Business and Organization
Ownership interest percentage in properties	80.00%
Noncontrolling interest ownership percentage in properties	20.00%
Period for exchange of ownership interest after project completion (in years)	1 year
Percentage of preferred return on investment	9.00%
Brooks Crossing
Business and Organization
Ownership interest percentage in properties	65.00%