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INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
INCOME TAXES [Abstract]
Operating loss carryforward	$ 49,238us-gaap_DeferredTaxAssetsOperatingLossCarryforwards	$ 52,092us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Research and development credit	4,018us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch	3,265us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch
Accrued social benefits	1,183us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	182us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
Property and equipment	(365)us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Net deferred tax asset before valuation allowance	54,074us-gaap_DeferredTaxAssetsGross	55,539us-gaap_DeferredTaxAssetsGross
Valuation allowance	(54,074)us-gaap_DeferredTaxAssetsValuationAllowance	(55,539)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax asset

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

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No definition available.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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