INVESTMENTS IN PARTNERSHIPS (Schedule of Income (Loss) in Earnings of Unconsolidated Venture) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
U.S. Real Estate Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Gross revenue	$ 642	$ 664
Operating expenses	715	470
Net income (loss)	(755)	(879)
Solar Ventures Investment [Member]
Schedule of Equity Method Investments [Line Items]
Gross revenue	21,821	10,334
Operating expenses	2,021	1,894
Net income (loss)	10,825	8,492
Realized loan net fair value gain (loss)	(9,000)	100
SAWHF
Schedule of Equity Method Investments [Line Items]
Gross revenue	1,112	199
Operating expenses	491	331
Net income (loss)	$ 76	$ 2,034