SCHEDULE OF COMPONENTS OF NET DEFERRED TAX ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Stock-based compensation	$ 1,164	$ 1,164
Assets	5,887	6,227
Liability accruals	316	173
R&D Credit	4,784	4,760
Capital Loss	528	528
Deferred state tax	(2,200)	(2,086)
Net operating loss carry forward	57,154	56,090
Total gross deferred tax assets	67,633	66,856
Less - valuation allowance	(67,633)	(66,856)
Net deferred tax assets

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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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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