MARKETABLE SECURITIES (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Entity Listings [Line Items]
Marketable securities	$ 91,700	$ 91,700
Percentage of undepreciated assets		7.20%
Purchase of marketable securities		$ 690	$ 934
Marketable securities at fair value	91,694	91,694		$ 116,186
Increase (decrease) in fair value of marketable securities	13,400	$ (25,200)
Real Estate Investment Trusts [Member]
Entity Listings [Line Items]
Maximum percentage of undepreciated assets		15.00%
Total net unrealized holding gains (losses)		$ 50,400
Dividend Reinvestment Stock Purchase Plan [Member]
Entity Listings [Line Items]
Number of common stock owned, shares		2,600,000
Number of common stock owned, value		$ 24,600
Marketable securities at fair value	$ 38,100	$ 38,100
Dividend Reinvestment Stock Purchase Plan [Member] | Stock Purchase Plan [Member]
Entity Listings [Line Items]
Purchase of common stock		54,000
Purchase of common stock, value		$ 637
Weighted average cost per shares	$ 11.72	$ 11.72