CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (11,618)	$ (36,529)	$ (28,998)
Adjustments required to reconcile net loss to net cash provided by (used in) operating activities:
Share based compensation	7,751	886	1,282
Depreciation and write down of fixed assets	3,692	3,631	3,133
Financial expenses (income), net (mainly exchange differences)	(171)	350	(591)
Changes in accrued liability for employee rights upon retirement	276	155	377
Gain on amounts funded in respect of employee rights upon retirement	(36)	(14)	(26)
Loss on sale of fixed assets		8
Changes in operating assets and liabilities:
Increase (decrease) in deferred revenues (including non-current portion)	1,281	(3,005)	(4,563)
Decrease (increase) in accounts receivable and other assets	243	3,891	(6,860)
Decrease (increase) in inventories	(3,760)	910	(1,189)
Increase (decrease) in accounts payable and accruals (including long term)	2,977	6,147	(1,029)
Net cash provided by (used in) operating activities	635	(23,570)	(38,464)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(2,068)	(5,705)	(7,855)
Proceeds from sale of property and equipment		2
Investment in restricted deposit	(80)
Amounts funded in respect of employee rights upon retirement, net	(138)	(165)	(137)
Net cash used in investing activities	(2,286)	(5,868)	(7,992)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of shares, net of issuance cost	25,328	20,650
Exercise of options	1,230	277	501
Net cash provided by financing activities	26,558	20,927	501
EFFECT OF EXCHANGE RATE CHANGES ON CASH	127	(388)	589
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	25,034	(8,899)	(45,366)
BALANCE OF CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	27,001	35,900	81,266
BALANCE OF CASH AND CASH EQUIVALENTS AT END OF YEAR	52,035	27,001	35,900
SUPPLEMENTARY INFORMATION ON INVESTING AND FINANCING ACTIVITIES NOT INVOLVING CASH FLOWS:
Purchase of property and equipment	1,136	1,473	2,720
Issuance cost not yet paid		60
Exercise of options granted to employees		$ 31	$ 9