Annual report pursuant to Section 13 and 15(d)

Income taxes (Schedule of Components of Loss From Continuing Operations by Domestic and Foreign Jurisdictions) (Details)

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Income taxes (Schedule of Components of Loss From Continuing Operations by Domestic and Foreign Jurisdictions) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
Domestic $ (12,667) $ (20,446)
Foreign
Loss from continuing operations before income taxes $ 12,667 $ (20,446)