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Income Taxes - Schedule of Deferred Income Taxes (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
Deferred R&D expenses $ 114 $ 239
Operating loss carryforward 32,256 32,443
Total 32,370 32,682
Net deferred tax asset before valuation allowance 7,076 7,149
Valuation allowance (7,076) (7,149)
Net deferred tax asset