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Expendable parts and supplies - Disclosure of Expendable Parts and Supplies (Detail) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Classes of current inventories [abstract]    
Material for repair and maintenance $ 111,938 $ 88,276
Other inventories 4,768 5,158
Expendable parts and supplies, gross 116,706 93,434
Allowance for obsolescence (102) (102)
Expendable parts and supplies $ 116,604 $ 93,332