RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 24, 2014	Dec. 31, 2017	Dec. 31, 2016
Summarized below are the related-party transactions
Related-party costs, Incurred	$ 1
Expensed Acquisition Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		$ 0	$ 184
Related-party costs, Payable		0	80
Expensed Asset management Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		868	902
Related-party costs, Payable		0	0
Expensed Reimbursement Of Operating Expenses [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		231	197
Related-party costs, Payable		0	0
Expensed Property Management Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		350	420
Related-party costs, Payable		21	2
Expensed Disposition Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		589	203
Related-party costs, Payable		0	29
Capitalized Acquisition Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		194	275
Related-party costs, Payable		0	0
Capitalized Leasing Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		222	205
Related-party costs, Payable		0	0
Capitalized Legal Leasing Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		95	78
Related-party costs, Payable		0	0
Capitalized Construction Management Fees [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		42	4
Related-party costs, Payable		0	0
Financing Coordination Fees, Capitalized [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		814	0
Related-party costs, Payable		0	0
Expensed [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		2,038	1,906
Related-party costs, Payable		21	111
Capitalized [Member] | Advisor Fees [Member]
Summarized below are the related-party transactions
Related-party costs, Incurred		1,367	562
Related-party costs, Payable		$ 0	$ 0