INVESTMENTS IN PARTNERSHIPS AND VENTURES (Schedule of Income Loss in Earnings of Unconsolidated Venture) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
U.S. Real Estate Partnerships
Schedule of Equity Method Investments [Line Items]
Gross revenue	$ 664	$ 801
Operating expenses	470	537
Net income (loss)	(879)	(309)
Solar Facilities Investment and Solar Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Gross revenue	10,334	6,799
Operating expenses	1,894	1,386
Net income (loss)	8,492	5,245
Net income attributable to the entity	8,492	4,133
SAWHF
Schedule of Equity Method Investments [Line Items]
Gross revenue	199	4,319
Operating expenses	331	1,840
Net income (loss)	$ 2,034	$ 2,479