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General information and significant accounting policies - Equity instruments (Details) - $ / shares
Dec. 31, 2023
Dec. 31, 2022
Disclosure of classes of share capital [line items]    
Number of shares authorised (in shares) 53,107,765 61,262,838
Number of shares issued (in shares) 53,107,765  
Common stock    
Disclosure of classes of share capital [line items]    
Number of shares authorised (in shares) 150,000,000 150,000,000
Number of shares outstanding (in shares) 53,107,765 61,262,838
Number of shares issued (in shares) 53,107,765 61,262,838
Par value per share (in dollars per share) $ 0.01 $ 0.01