Acquired Lease Intangibles - Summary of Amortization or Accretion Recorded During the Period Related to Acquired Lease Intangibles (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of (below) above market lease intangibles, net	$ (78)	$ 202	$ 420
In-place Lease Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of in-place lease intangibles	13,560	12,445	9,275
Net Above (Below) Market Tenant Leases
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of (below) above market lease intangibles, net	(46)	234	452
Above Market Ground Lease
Acquired Finite Lived Intangible Assets [Line Items]
Accretion Of Above Market Ground Lease Intangible	$ (32)	$ (32)	$ (32)