Real Estate Activities - Summary of Capitalized Salaries, Commissions and Benefits, Real Estate Taxes and Interest (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest | Development/Redevelopment Activities:
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	$ 2,325	$ 1,281	$ 4,329	$ 2,907
Compensation | Development/Redevelopment Activities:
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	336	277	688	715
Real estate taxes | Development/Redevelopment Activities:
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	345	216	421	380
Compensation, including commissions(1) | Leasing Activities:
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	$ 156	$ 1,769	$ 476	$ 3,941