Lease Intangible Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, net of accumulated amortization	$ 291,613		$ 310,098
Identified intangible liability, net of accumulated amortization	13,945		14,476
Amortization of below-market leases, net of above-market leases	200	$ 200
Additional property expense	50	50
In-Place Leases, Net [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, net of accumulated amortization	274,941		$ 293,086
Amortization expense of intangible assets	$ 18,000	$ 43,800