SIGNIFICANT ACCOUNTING POLICIES (Net (loss) earnings per share) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net loss (income) for the period	$ 450	$ (10,853)	$ (58,698)	$ (19,451)
Financial income, net of convertible notes	(11,847)	0	0	0
Loss used for the computation of diluted loss per share	$ (11,397)	$ (10,853)	$ (58,698)	$ (19,451)
Weighted average shares of common stock outstanding for basic calculation	127,523,706	99,758,511	126,000,782	99,737,348
Weighted average dilutive effect of shares issuable upon conversion of convertible notes	65,066,683	0	0	0
Weighted average dilutive effect of stock options	8,000	0	0	0
Weighted average shares of common stock outstanding for diluted calculation	192,598,389	99,758,511	126,000,782	99,737,348