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Stockholders' equity and dividend payment, Stockholders' equity (Details)
 12 Months Ended
Dec. 31, 2022
Vote
$ / shares
shares
Dec. 31, 2021
shares
Common Stock [Abstract]    
Number of vote per common stock | Vote 1  
Common Stock [Member]    
Stockholders' Equity [Abstract]    
Issued, Beginning balance (in shares) 166,126,770 170,798,328
Restricted stock issued (in shares) 852,948 841,696
Retirement of treasury shares (in shares) (4,326,379) (5,513,254)
Issued, Ending balance (in shares) 162,653,339 166,126,770
Par value (in dollars per share) | $ / shares $ 0.01  
Number of shares authorized for issue (in shares) 250,000,000