RELATED PARTY TRANSACTIONS - Costs (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Jan. 31, 2020	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Related Party Transaction [Line Items]
Payable as of		$ 71	$ 71		$ 59
Administrative fees			58	$ 63
Reimbursable operating expenses	$ 25	33
Advisor and Dealer Manager
Related Party Transaction [Line Items]
Expenses			4,997	2,737
Payable as of		71	71		59
Advisor and Dealer Manager | Asset management fees (1)
Related Party Transaction [Line Items]
Expenses	$ 800	1,000	1,839	2,657
Payable as of		0	0		0
Advisor and Dealer Manager | Reimbursement of operating expenses
Related Party Transaction [Line Items]
Expenses			76	80
Payable as of		71	71		59
Advisor and Dealer Manager | Disposition fees
Related Party Transaction [Line Items]
Expenses			3,082	$ 0
Payable as of		$ 0	$ 0		$ 0