Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
General and administrative	$ 4,152	$ 6,360
Impairment of unproved oil and gas properties	314	30,906
Other	2,056	2,214
Loss from operations	(6,522)	(39,480)
Other income (expense), net
Gain on derivative liability	216	1,521
Foreign exchange (loss)	(13)	(133)
Financial (expenses), net	(374)	(419)
Loss before income taxes	(6,693)	(38,511)
Income taxes
Net loss	$ (6,693)	$ (38,511)
Net loss per share of common stock
Basic and diluted (in US$)	$ (0.08)	$ (0.63)
Weighted-average shares outstanding
Basic and diluted (in thousands)	81,890	61,107