INTANGIBLE LEASE ASSETS AND LIABILITIES - Estimated Amortization of Intangible Lease Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortiztaion, In-Place Leases and Other Intangibles, Above-Market Leases
Total	$ 226,074	$ 234,543
Amortization, Below-Market Leases
Remainder of 2021	4,012
2022	4,752
2023	4,088
2024	3,128
2025	2,760
Thereafter	12,674
Total	31,414	32,718
In-Place Leases and Other Intangibles
Amortiztaion, In-Place Leases and Other Intangibles, Above-Market Leases
Remainder of 2021	22,301
2022	27,702
2023	24,509
2024	21,314
2025	17,534
Thereafter	96,316
Total	209,676	217,431
Above-Market Leases
Amortiztaion, In-Place Leases and Other Intangibles, Above-Market Leases
Remainder of 2021	1,813
2022	2,323
2023	2,070
2024	1,575
2025	1,334
Thereafter	7,283
Total	$ 16,398	$ 17,112

Below Market Lease, Amortization Income, After Year Four

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Finite-Lived Intangible Asset, Expected Amortization, After Year Four

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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No definition available.

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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No definition available.

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 350
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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
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-Topic 350
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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