Intangible Assets - Summary of Amortization or Accretion Recorded During the Period Related to Acquired Lease Intangibles (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of (below) above market lease intangibles, net			$ (7,822)	$ (5,716)
In-place lease intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of in-place lease intangibles	$ 5,537	$ 5,572	17,111	15,224
Net below market tenant leases
Acquired Finite Lived Intangible Assets [Line Items]
Amortization of (below) above market lease intangibles, net	$ (2,750)	$ (2,065)	$ (7,822)	$ (5,716)

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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