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Share capital (Narrative) (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Sep. 23, 2022
USD ($)
Mar. 25, 2022
USD ($)
Sep. 24, 2021
USD ($)
Mar. 26, 2021
USD ($)
Dec. 31, 2022
$ / shares
Dec. 31, 2022
USD ($)
Dec. 31, 2021
$ / shares
Dec. 31, 2021
USD ($)
Disclosure of classes of share capital [line items]                
Dividends declared, amount per share | $ / shares         $ 0.01   $ 0.01  
Dividends paid | $ $ 1,972 $ 2,075 $ 2,056 $ 2,090   $ 4,047   $ 4,146