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SIGNIFICANT ACCOUNTING POLICIES (Condensed consolidated balance sheets) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
CURRENT LIABILITIES:
Contracts liability	$ 3,420
Total current liabilities	18,492	22,752
LONG TERM LIABILITIES:
Contracts liability	21,636	25,015
Total long term liabilities	75,971	78,919
Total liabilities	94,463	101,671
CAPITAL DEFICIENCY	(42,742)	(29,457)	$ (20,668)	$ (9,957)
Previously Reported [Member]
CURRENT LIABILITIES:
Contracts liability	0
Total current liabilities	15,072
LONG TERM LIABILITIES:
Contracts liability	31,885	26,851
Total long term liabilities	86,220
Total liabilities	101,292
CAPITAL DEFICIENCY	(49,571)
Restatement Adjustment [Member]
CURRENT LIABILITIES:
Contracts liability	3,420
Total current liabilities	3,420
LONG TERM LIABILITIES:
Contracts liability	(10,249)	$ (1,836)
Total long term liabilities	(10,249)
Total liabilities	(6,829)
CAPITAL DEFICIENCY	$ 6,829