Real Estate Activities - Summary of Capitalized Salaries, Commissions and Benefits, Real Estate Taxes and Interest (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Salaries and benefits | Development/Redevelopment Activities [Member]
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	$ 274	$ 154
Capitalized Real Estate Taxes [Member] | Development/Redevelopment Activities [Member]
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	19
Interest | Development/Redevelopment Activities [Member]
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	703	35
Salaries, commissions and benefits | Leasing Activities [Member]
Real Estate Capitalized Costs [Line Items]
Real estate capitalized cost	$ 1,737	$ 1,655