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SIGNIFICANT ACCOUNTING POLICIES (condensed consolidated of cash flows) (Details) - USD ($) $ 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]
Net loss	$ (5,322)	$ (11,437)	$ (21,023)	$ (70,135)
Increase in contracts liability			18,264	(837)
Increase in contract asset			0
Net cash used in operating activities			(3,738)	$ (27,584)
Previously Reported [Member]
Significant Accounting Policies [Line Items]
Net loss	(15,544)		(36,238)
Increase in contracts liability			34,929
Increase in contract asset			(1,450)
Net cash used in operating activities			(3,738)
Restatement Adjustment [Member]
Significant Accounting Policies [Line Items]
Net loss	$ 10,222		15,215
Increase in contracts liability			(16,665)
Increase in contract asset			1,450
Net cash used in operating activities			$ 0