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Goodwill and other intangible assets - Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Goodwill [Roll Forward]        
Goodwill, beginning of period $ 823,671 $ 541,850 $ 845,734 $ 541,480
Goodwill acquired 0 310,833 3,014 311,203
Foreign currency translation adjustment (23,147) (6,626) (48,224) (6,626)
Goodwill, end of period $ 800,524 $ 846,057 $ 800,524 $ 846,057