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IDENTIFIED INTANGIBLE ASSETS AND LIABILITIES - Identifiable Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
In-place leases, gross	$ 75,454	$ 88,355
Accumulated amortization, identified intangible assets	(39,526)	(33,827)
Identified intangible assets, net of accumulated amortization	68,422	87,249
Below-market lease liability, gross	209,316	246,791
Accumulated amortization, below-market lease liabilities	(65,058)	(65,832)
Identified intangible liabilities, net of accumulated amortization	144,258	180,959
In-place leases
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization, identified intangible assets	(24,713)	(21,557)
Below-market ground leases
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization, identified intangible assets	(11,791)	(10,819)
Below and above-market leases and other intangibles, gross	23,730	23,730
Above-market leases
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization, identified intangible assets	(2,565)	(1,228)
Below and above-market leases and other intangibles, gross	7,129	7,356
Accumulated amortization
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization, identified intangible assets	(457)	(223)
Below and above-market leases and other intangibles, gross	$ 1,635	$ 1,635

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- Definition

Intangible Liabilities, Accumulated Amortization

+ References

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- Definition

Amount before amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.

+ References

No definition available.

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- Definition

Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.

+ References

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- Definition

This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired.

+ References

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 350
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-Section 50
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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