Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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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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No definition available.

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REAL ESTATE ASSETS (Purchase Price Allocation) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Real Estate [Line Items]
Land	$ 730,912		$ 700,210
Buildings, fixtures and improvements	1,979,787		1,830,101
Intangible lease assets	322,221		313,127
Total real estate assets, at cost	3,032,920		$ 2,843,438
2020 Property Acquisitions
Real Estate [Line Items]
Land	4,677
Buildings, fixtures and improvements	8,415
Total real estate assets, at cost	14,510
2019 Property Acquisition
Real Estate [Line Items]
Land		$ 1,501
Buildings, fixtures and improvements		3,804
Total real estate assets, at cost		6,165
Acquired in-place leases and other intangibles \| 2020 Property Acquisitions
Real Estate [Line Items]
Intangible lease assets	$ 1,418
Useful life	14 years 8 months 12 days
Acquired in-place leases and other intangibles \| 2019 Property Acquisition
Real Estate [Line Items]
Intangible lease assets		$ 860
Useful life		19 years 9 months 18 days