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Earnings per share ("EPS") (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Components of calculation of basic EPS and diluted EPS [Abstract]      
Profit/(loss) for the period used for calculation of EPS - basic $ 61,520 $ (11,521) $ 266,266
Interest and amortization on the convertible notes 0 0 6,766
Profit/(loss) for the period used for calculation of EPS - dilutive $ 61,520 $ (11,521) $ 273,032
Basic earnings per share [Abstract]      
Weighted average number of shares (basic) (in shares) 164,692,954 169,089,325 155,712,886
Diluted earnings per share [Abstract]      
Weighted average shares outstanding - basic (in shares) 164,692,954 169,089,325 155,712,886
Dilutive equity awards (in shares) [1] 157,137 0 65,873
Dilutive shares related to convertible notes (in shares) 0 0 14,275,217
Weighted average shares outstanding - dilutive (in shares) 164,850,091 169,089,325 170,053,975
Antidilutive securities excluded from calculation of diluted weighted average number of shares outstanding (in shares) 77,546
[1] In 2022, 2021, and 2020, equity awards of nil, 77,546 and nil, respectively, were excluded from the calculation of the dilutive weighted average shares outstanding due to being anti-dilutive.