REAL ESTATE INVESTMENTS, NET AND INTANGIBLE ASSETS AND LIABILITIES, NET - Leasing Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property Subject to or Available for Operating Lease [Line Items]
Land	$ 569,057	$ 449,331
Total real estate investments	1,805,281	1,564,955
Less: Accumulated depreciation	(614,584)	(598,846)
Total real estate investments, net	1,190,697	966,109
Intangible Lease Assets, Net	18,998	3,835
Total real estate investments and intangible real estate assets, net	1,209,695	969,944
Property Subject to Operating Lease
Property Subject to or Available for Operating Lease [Line Items]
Land	569,057	449,331
Buildings and improvements	1,099,591	977,783
Equipment	136,633	137,841
Total real estate investments	1,805,281	1,564,955
Less: Accumulated depreciation	(614,584)	(598,846)
Total real estate investments, net	$ 1,190,697	$ 966,109

Real Estate Investment Property And Intangible Asset Net

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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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 before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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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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The cumulative amount of depreciation for real estate property held for investment purposes.

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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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Amount of real estate investment property, net of accumulated depreciation, 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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