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Leases - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2025
USD ($)
Aircraft
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Aircraft
Dec. 31, 2023
USD ($)
Aircraft
Oct. 31, 2024
Aircraft
Lessee, Lease, Description [Line Items]          
Number of aircrafts operated 36   34 42  
Additional variable costs | $ $ 4,416 $ 3,421 $ 15,198 $ 12,689  
Number of aircrafts leased 2       1
Number of aircrafts purchased     1    
Minimum          
Lessee, Lease, Description [Line Items]          
Lease term 2 years   2 years    
Minimum | Charter Flight Services          
Lessee, Lease, Description [Line Items]          
Lease term 3 months   3 months    
Maximum          
Lessee, Lease, Description [Line Items]          
Lease term 30 years   30 years    
Maximum | Charter Flight Services          
Lessee, Lease, Description [Line Items]          
Lease term 7 years   7 years