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(Loss) earnings per share - Narrative (Details) - shares | 12 Months Ended
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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

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- Details
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