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Income Taxes - Summary of Loss from Continuing Operations Before Taxes on Income (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Line Items]    
Net loss before income tax $ (49,558) $ (57,202)
United States    
Income Tax Disclosure [Line Items]    
Net loss before income tax (58,760) (19,502)
Lithuania    
Income Tax Disclosure [Line Items]    
Net loss before income tax (73) 200
Israel    
Income Tax Disclosure [Line Items]    
Net loss before income tax $ 9,275 $ (37,900)