RELATED PARTY TRANSACTIONS (Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Payable as of	$ 82		$ 36
Payment for administrative fees	71	$ 83
Advisor and Dealer Manager
Related Party Transaction [Line Items]
Capitalized	2,374	4,416
Payable as of	82		36
Advisor and Dealer Manager \| Asset management fees
Related Party Transaction [Line Items]
Expensed	1,891	1,825
Payable as of	0		0
Advisor and Dealer Manager \| Reimbursable operating expenses
Related Party Transaction [Line Items]
Expensed	89	83
Payable as of	82		29
Advisor and Dealer Manager \| Disposition fees
Related Party Transaction [Line Items]
Expensed	394	0
Payable as of	0		0
Advisor and Dealer Manager \| Acquisition fees on real estate
Related Party Transaction [Line Items]
Capitalized	0	2,360
Payable as of	0		0
Advisor and Dealer Manager \| Acquisition fees on real estate equity securities
Related Party Transaction [Line Items]
Capitalized	0	$ 148
Payable as of	$ 0		$ 7

Carrying amount as of the balance sheet date of obligations due all related parties.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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