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Leases - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
aircraft
Dec. 31, 2023
USD ($)
aircraft
Dec. 31, 2022
aircraft
Disclosure of finance and operating lease by lessee [Line Items]      
Average duration of long-term lease agreement 15 years    
Derecognition $ (20,271)    
Number of new aircrafts purchased | aircraft 4    
Lease liabilities including provision of dismantling amounts $ 351,900 $ 310,800  
Cash outflow for leases $ 77,100 $ 92,200  
Weighted average incremental borrowing rate 5.20% 4.60%  
Dismantling provision, remaining capacity $ 4,200    
Aircraft      
Disclosure of finance and operating lease by lessee [Line Items]      
Derecognition $ (20,271)    
B-737 Max 9      
Disclosure of finance and operating lease by lessee [Line Items]      
Lease term   8 years  
Number of new aircrafts leased | aircraft   1 3