Lease Intangible Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, net of accumulated amortization	$ 251,303		$ 251,303		$ 310,098
Identified intangible liability, net of accumulated amortization	13,430		13,430		14,476
Amortization of below-market leases, net of above-market leases	200	$ 200	500	$ 500
Additional property expense	51	51	100	100
In-Place Leases, Net [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, net of accumulated amortization	235,413		235,413		$ 293,086
Amortization expense of intangible assets	$ 35,200	$ 31,400	$ 53,300	$ 75,200