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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - € / shares
Sep. 30, 2021
Dec. 31, 2020
Statement Of Financial Position [Abstract]    
Common shares, par value € 0.09 € 0.09
Common shares, authorized 67,500,000 45,000,000
Common shares, issued 38,605,096 31,602,953
Common shares, outstanding 38,605,096 31,602,953