CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Loss	$ (36,529)	$ (28,998)	$ (31,440)
Adjustments required to reconcile net loss to net cash provided by (used in) operating activities:
Share based compensation	886	1,282	2,683
Depreciation and write down of fixed assets	3,631	3,133	1,990
Financial expenses (income), net (mainly exchange differences)	350	(591)	(166)
Changes in accrued liability for employee rights upon retirement	155	377	265
Gain on amounts funded in respect of employee rights upon retirement	(14)	(26)	(81)
Loss on sale of fixed assets	8		29
Changes in operating assets and liabilities:
Increase (decrease) in deferred revenues (including non-current portion)	(3,005)	(4,563)	64,612
Decrease (increase) in accounts receivable	3,891	(6,860)	(1,224)
Decrease (Increase) in inventories	910	(1,189)
Increase (decrease) in accounts payable and accruals (including long term )	6,147	(1,029)	7,784
Net cash provided by (used in) operating activities	(23,570)	(38,464)	44,452
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(5,705)	(7,855)	(6,195)
Proceeds from sale of property and equipment	2		73
Amounts funded in respect of employee rights upon retirement, net	(165)	(137)	(52)
Net cash used in investing activities	(5,868)	(7,992)	(6,174)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of shares, net of issuance cost	20,650
Exercise of options	277	501	293
Net cash provided by financing activities	20,927	501	293
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(388)	589	99
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(8,899)	(45,366)	38,670
BALANCE OF CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	35,900	81,266	42,596
BALANCE OF CASH AND CASH EQUIVALENTS AT END OF YEAR	27,001	35,900	81,266
SUPPLEMENTARY INFORMATION ON INVESTING AND FINANCING ACTIVITIES NOT INVOLVING CASH FLOWS:
Purchase of property and equipment	1,473	2,720	4,525
Issuance cost not yet paid and accruals - other	60
Exercise of options granted to employees	$ 31	$ 9