Intangible Assets - Summary of Acquired Lease Intangible Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Acquired Finite Lived Intangible Assets [Line Items]
Acquired lease intangible assets, net	$ 33,050	$ 36,365
Acquired lease intangible liabilities, net	(8,653)	(9,130)
In-place lease intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Acquired lease intangible assets, gross	68,234	68,234
Accumulated amortization	(40,604)	(37,648)
Acquired lease intangible assets, net	27,630	30,586
Above Market Tenant Leases
Acquired Finite Lived Intangible Assets [Line Items]
Acquired lease intangible assets, gross	10,191	10,191
Accumulated amortization	(4,771)	(4,412)
Acquired lease intangible assets, net	5,420	5,779
Below Market Tenant Leases
Acquired Finite Lived Intangible Assets [Line Items]
Acquired lease intangible liabilities, gross	(12,426)	(12,426)
Accumulated accretion	3,946	3,477
Acquired lease intangible liabilities, net	(8,480)	(8,949)
Above-market ground lease
Acquired Finite Lived Intangible Assets [Line Items]
Acquired lease intangible liabilities, gross	(290)	(290)
Accumulated accretion	117	109
Acquired lease intangible liabilities, net	$ (173)	$ (181)