RELATED PARTY TRANSACTIONS AND FEES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fees:
Advisory	$ 5,806	$ 10,663	$ 9,995
Net income	357	631	250
Other Expense:
Cost reimbursements	6,687
Pillar Income Asset Management, Inc [Member]
Fees:
Advisory	5,806	10,663	9,995
Mortgage brokerage and equity refinancing		852	1,551
Net income	357	631	250
Total fees	6,163	12,146	11,796
Other Expense:
Cost reimbursements	6,687	4,398	2,895
Interest received	(8,475)	(7,404)	(4,859)
Total other expense	(1,788)	(3,006)	(1,964)
Revenue:
Rental	1,311	1,178	783
Regis Realty Prime, LLC [Member]
Fees:
Property acquisition	318	43,856	9,819
Property management, construction management and leasing commissions	165	540	963
Real estate brokerage	71	2,068	1,369
Total fees	$ 554	$ 46,464	$ 12,151