CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 54,767	$ 86,398
Accounts receivable- Trade	1,884us-gaap_AccountsReceivableNetCurrent	2,091us-gaap_AccountsReceivableNetCurrent
Other assets	2,202us-gaap_OtherAssetsCurrent	1,457us-gaap_OtherAssetsCurrent
Inventories	6,667us-gaap_InventoryNet	7,957us-gaap_InventoryNet
Total current assets	65,520us-gaap_AssetsCurrent	97,903us-gaap_AssetsCurrent
FUNDS IN RESPECT OF EMPLOYEE RIGHTS UPON RETIREMENT	1,555	1,578
PROPERTY AND EQUIPMENT, NET	11,282us-gaap_PropertyPlantAndEquipmentNet	13,711us-gaap_PropertyPlantAndEquipmentNet
DEFERRED CHARGES	113us-gaap_DeferredCosts	141us-gaap_DeferredCosts
Total assets	78,470us-gaap_Assets	113,333us-gaap_Assets
Accounts payable and accruals:
Trade	3,951us-gaap_AccountsPayableTradeCurrent	5,254us-gaap_AccountsPayableTradeCurrent
Other	15,496us-gaap_AccountsPayableOtherCurrent	12,073us-gaap_AccountsPayableOtherCurrent
Deferred revenues	6,763us-gaap_DeferredRevenueCurrent	9,369us-gaap_DeferredRevenueCurrent
Total current liabilities	26,210us-gaap_LiabilitiesCurrent	26,696us-gaap_LiabilitiesCurrent
LONG TERM LIABILITIES:
Convertible notes	67,464us-gaap_ConvertibleDebtNoncurrent	67,048us-gaap_ConvertibleDebtNoncurrent
Deferred revenues	37,232us-gaap_DeferredRevenueNoncurrent	41,796us-gaap_DeferredRevenueNoncurrent
Liability in connection with collaboration operation	912us-gaap_LongTermDebtNoncurrent	2,371us-gaap_LongTermDebtNoncurrent
Liability for employee rights upon retirement	2,253	2,368
Total long term liabilities	107,861us-gaap_LiabilitiesNoncurrent	113,583us-gaap_LiabilitiesNoncurrent
Total liabilities	134,071us-gaap_Liabilities	140,279us-gaap_Liabilities
COMMITMENTS (Note 6)
CAPITAL DEFICIENCY:
Common Stock, $0.001 par value: Authorized - as of December 31, 2013 and 2014, 150,000,000 shares; issued and outstanding - as of December 31, 2013 and 2014, 93,551,098 shares and 93,603,819shares, respectively	94us-gaap_CommonStockValue	93us-gaap_CommonStockValue
Additional paid-in capital	185,633	184,346
Accumulated deficit	(241,328)	(211,385)
Total capital deficiency	(55,601)us-gaap_StockholdersEquity	(26,946)us-gaap_StockholdersEquity
Total liabilities net of capital deficiency	$ 78,470	$ 113,333

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