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(Loss) earnings per share - Narrative (Details) - shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Earnings per share [line items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 2,765,436 2,295,857
Share options    
Earnings per share [line items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 533,971 1,008,339
RSU's and RSU's with performance criteria    
Earnings per share [line items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 264,835 246,560
PSUs    
Earnings per share [line items]    
Antidilutive securities excluded from computation of earnings per share (in shares) 35,232 213,420