INVESTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Fair value Available for Sale
Opening balance			$ 8,543	$ 1,032	$ 1,032
Additions during the period				398	4,419
Disposals during the period			(2,155)	(470)	(470)
Other Comprehensive Income (Loss) (pre -tax)			2,799		3,043
Statement of Operations (Loss) Income			1,909		519
Fair Value end of the period	$ 11,096		11,096		8,543
Cost of purchase of marketable equity securities			3,600		4,900
Unrealized (loss) gain on derivatives (note 2)	(722)	$ 1,719	1,069	1,719
Gain on available-for-sale securities, pre-tax	800	100	800	100
Sale of marketable securities	2,200		2,200
Other-than-temporary impairment on marketable equity securities		597	0	882
Other comprehensive loss, net of tax	(1,100)	$ 2,200	2,799	2,382
Marketable equity securities
Fair value Available for Sale
Opening balance			6,749	$ 1,032	1,032
Additions during the period					4,004
Disposals during the period			(2,155)		(470)
Other Comprehensive Income (Loss) (pre -tax)			2,799		3,043
Statement of Operations (Loss) Income			840		(860)
Fair Value end of the period	8,233		8,233		6,749
Warrants
Fair value Available for Sale
Opening balance			1,794
Additions during the period					415
Statement of Operations (Loss) Income			1,069		1,379
Fair Value end of the period	$ 2,863		$ 2,863		$ 1,794