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RELATED PARTY TRANSACTIONS (Details) $ in Thousands	12 Months Ended
RELATED PARTY TRANSACTIONS (Details) $ in Thousands	Dec. 31, 2020 USD ($) property	Dec. 31, 2019 USD ($)	Jul. 31, 2019 property
ADVISOR'S COMPENSATION AND RELATED PARTY TRANSACTIONS
General and administrative, related party	$ 761	$ 575
Number of properties \| property	8
Director \| Advisory services
ADVISOR'S COMPENSATION AND RELATED PARTY TRANSACTIONS
Related party expense	$ 1,398	1,331
Majestic Property Management Corp. \| Real property management, real estate brokerage and construction supervision services
ADVISOR'S COMPENSATION AND RELATED PARTY TRANSACTIONS
Related party expense	32	33
Gould Investors L.P. \| Shared services agreement
ADVISOR'S COMPENSATION AND RELATED PARTY TRANSACTIONS
General and administrative, related party	761	575
Amount unpaid	124	142
Affiliated entity \| Management fee
ADVISOR'S COMPENSATION AND RELATED PARTY TRANSACTIONS
Related party expense		68
Number of properties \| property			2
Affiliated entity \| Insurance reimbursement
ADVISOR'S COMPENSATION AND RELATED PARTY TRANSACTIONS
Related party expense	$ 39	$ 40