RELATED PARTY TRANSACTIONS - Transactions with Affiliates (Details) - USD ($)		1 Months Ended	12 Months Ended
	Jan. 01, 2019	Nov. 30, 2014	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Special units issued (in shares)		100
Value of special units issued		$ 1,000
General And Limited Partner
Related Party Transaction [Line Items]
Operating partnership units issued		20,000
Operating partnership units value		$ 200,000
ILT Advisors Group LLC
Related Party Transaction [Line Items]
Special units issued (in shares)		100
Value of special units issued		$ 1,000
Sponsor
Related Party Transaction [Line Items]
Expense support payable to the Advisor			$ 2,900,000	$ 700,000
Common Stock
Related Party Transaction [Line Items]
Issuance of common stock, shares			29,243,000	19,090,000	983,000
Class A | Common Stock | Advisor
Related Party Transaction [Line Items]
Common stock, shares issued		20,000
Share price (in dollars per share)		$ 10.00
Class I
Related Party Transaction [Line Items]
Common stock, shares issued			1,299,000	345,000
Class I | Common Stock | Sponsor
Related Party Transaction [Line Items]
Issuance of common stock, shares	72,000