SELECTED QUARTERLY FINANCIAL DATA (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues									$ 54,693	$ 34,240	$ 21,078
Operating (loss) profit	$ 2,200	$ (1,544)	$ (5,839)	$ (5,534)	$ (3,672)	$ (3,741)	$ (6,744)	$ (5,151)	(10,717)	(19,308)	(34,517)
Net (loss) profit for the period	$ 291	$ (3,560)	$ (7,743)	$ (7,264)	$ (5,434)	$ (5,322)	$ (8,462)	$ (7,239)	$ (18,276)	$ (26,457)	$ (83,440)
Net basic and diluted income (loss) per share of common stock	$ 0.02	$ (0.2)	$ (0.5)	$ (0.5)	$ (0.4)	$ (0.4)	$ (0.6)	$ (0.5)	$ (1.23)	$ (1.80)	$ (6.37)
Goods [Member]
Revenues	$ 3,780	$ 5,126	$ 3,430	$ 3,530	$ 1,756	$ 663	$ 2,006	$ 4,553	$ 15,866	$ 8,978	$ 19,242
License and R&D Services [Member]
Revenues	$ 13,979	$ 9,122	$ 8,817	$ 6,909	$ 8,597	$ 11,672	$ 2,832	$ 2,161	$ 38,827	$ 25,262	$ 1,836