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Income Taxes (Schedule of Significant Components of the Company's Deferred Tax Asset) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Deferred taxes      
Net operating loss carry-forwards $ 36,550 $ 33,396  
Share-based compensation expense 1,774 1,147  
Research and development costs 2,858 1,449  
Other 13 38  
Gross deferred tax assets 41,195 36,030  
Less - valuation allowance (41,195) (36,030) $ (6,200)
Net deferred tax assets $ 0 $ 0