IDENTIFIED INTANGIBLE ASSETS AND LIABILITIES - Schedule of Estimated Annual Amortization Expense (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Below-Market Operating Lease Amortization
Reminder of 2019	$ 2,402
2019	9,547
2020	9,409
2021	9,332
2022	9,285
2024	9,038
Above-Market
Above-Market Operating Lease Amortization
Remainder of 2019	(282)
2020	(996)
2021	(797)
2022	(433)
2023	(327)
2024	(266)
In-Place Leases
Remainder of 2019	(282)
2020	(996)
2021	(797)
2022	(433)
2023	(327)
2024	(266)
In-Place Leases
Above-Market Operating Lease Amortization
Remainder of 2019	(1,701)
2020	(6,124)
2021	(4,934)
2022	(4,032)
2023	(3,702)
2024	(3,264)
In-Place Leases
Remainder of 2019	(1,701)
2020	(6,124)
2021	(4,934)
2022	(4,032)
2023	(3,702)
2024	$ (3,264)

Below Market Lease, Net Of Above Market Lease, Amortization Income, Reminder of Fiscal Year

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Below Market Lease, Net Of Above Market Lease, Amortization Income, Year Five

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Below Market Lease, Net Of Above Market Lease, Amortization Income, Year Four

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Below Market Lease, Net Of Above Market Lease, Amortization Income, Year Six

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Below Market Lease, Net Of Above Market Lease, Amortization Income, Year Three

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Below Market Lease, Net Of Above Market Lease, Amortization Income, Year Two

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Below Market Lease, Net of Above Market Lease, Amortization Income, Fiscal Year Maturity [Abstract]

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Finite-Lived Intangible Assets, Amortization Expense, Year Six

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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