INVESTMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments rollforward
Opening balance	$ 3,131	$ 7,971
Additions/transfers during the period	2,314	2,083
Net gain (loss) on securities sold	4,523	(767)
Disposals/transfers during period	(8,819)	(3,599)
Unrealized gains (loss) on securities held	736	(2,557)
Fair Value end of the period	1,885	3,131	$ 7,971
Proceeds from sale of investments	6,769	2,895	2,155
Cost of purchase of marketable equity securities	1,300	2,900
Other-than-temporary impairment on marketable equity securities			356
Marketable equity securities
Investments rollforward
Opening balance	2,718	6,404
Additions/transfers during the period	2,314	1,882
Net gain (loss) on securities sold	3,396	(767)
Disposals/transfers during period	(7,279)	(2,895)
Unrealized gains (loss) on securities held	736	(1,906)
Fair Value end of the period	1,885	2,718	6,404
Proceeds from sale of investments	6,800	2,900	2,200
Warrants
Investments rollforward
Opening balance	413	1,567
Additions/transfers during the period		201
Net gain (loss) on securities sold	1,127
Disposals/transfers during period	$ (1,540)	(704)
Unrealized gains (loss) on securities held		(651)
Fair Value end of the period		$ 413	$ 1,567