SIGNIFICANT ACCOUNTING POLICIES (condensed consolidated income statement) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Significant Accounting Policies [Line Items]
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	[1]	$ (4,088)	$ (2,836)	$ (8,744)	$ (8,187)
OPERATING LOSS		(3,741)	(7,765)	(15,636)	(24,935)
LOSS FOR THE PERIOD		$ (5,322)	$ (11,437)	$ (21,023)	$ (70,135)
Net loss per share of common stock-basic and diluted		$ (0.04)	$ (0.09)	$ (0.14)	$ (0.55)
License and Service [Member]
Significant Accounting Policies [Line Items]
REVENUES FROM LICENSE AGREEMENTS		$ 11,672		$ 16,665
Previously Reported [Member]
Significant Accounting Policies [Line Items]
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES		(2,638)		(7,294)
OPERATING LOSS		(13,963)		(30,851)
LOSS FOR THE PERIOD		$ (15,544)		$ (36,238)
Net loss per share of common stock-basic and diluted		$ (0.10)		$ (0.25)
Previously Reported [Member] | License and Service [Member]
Significant Accounting Policies [Line Items]
REVENUES FROM LICENSE AGREEMENTS		$ 0		$ 0
Restatement Adjustment [Member]
Significant Accounting Policies [Line Items]
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES		(1,450)		(1,450)
OPERATING LOSS		10,222		15,215
LOSS FOR THE PERIOD		$ 10,222		$ 15,215
Net loss per share of common stock-basic and diluted		$ 0.06		$ 0.11
Restatement Adjustment [Member] | License and Service [Member]
Significant Accounting Policies [Line Items]
REVENUES FROM LICENSE AGREEMENTS		$ 11,672		$ 16,665

[1] Includes share-based compensation