CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
REVENUES (see Note 11(c))	$ 10,479	$ 34,870	$ 8,386
COMPANY'S SHARE IN COLLABORATION AGREEMENT	1,034	(446)	(5,418)
COST OF REVENUES	(5,428)	(8,144)	(1,525)
GROSS PROFIT	6,085	26,280	1,443
RESEARCH AND DEVELOPMENT EXPENSES	(33,313)	(36,665)	(37,818)
Less - grants and reimbursements	8,497	7,976	6,775
RESEARCH AND DEVELOPMENT EXPENSES, NET	(24,816)	(28,689)	(31,043)
GENERAL AND ADMINISTRATIVE EXPENSES	(8,385)	(9,763)	(6,931)
OPERATING LOSS	(27,116)	(12,172)	(36,531)
FINANCIAL INCOME (EXPENSES) - NET	(674)	554	2
NET LOSS FOR THE YEAR	$ (27,790)	$ (11,618)	$ (36,529)
NET LOSS PER SHARE OF COMMON STOCK - BASIC AND DILUTED:	$ (0.3)	$ (0.13)	$ (0.43)
WEIGHTED AVERAGE NUMBER OF SHARES OF COMMON STOCK USED IN COMPUTING LOSS PER SHARE OF COMMON STOCK, BASIC AND DILUTED:	92,368,138	90,845,901	84,645,364