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Adoption of new accounting standards (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Disclosure of initial application of standards or interpretations [line items]    
Employee benefit plan obligations $ 8,910 $ 8,942
Deferred income tax liabilities 424,726 439,195
Accumulated other comprehensive loss $ (42,284) $ (20,905)