Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives - Derivatives Measured at Fair Value and Disclosed by Balance Sheet Location (Details)

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Fair Value Measurements and Derivatives - Derivatives Measured at Fair Value and Disclosed by Balance Sheet Location (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value $ 21,676  
Derivative liabilities, fair value 15 $ 21,490
Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 21,657 4,446
Derivative liabilities, fair value 1,174 20,179
Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 19 141
Derivative liabilities, fair value 61 1,311
Fuel contracts | Designated as Hedging Instrument | Prepaid expenses and other assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 17,081  
Derivative liabilities, fair value 609  
Fuel contracts | Designated as Hedging Instrument | Other long-term assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 4,454  
Derivative liabilities, fair value 550  
Fuel contracts | Designated as Hedging Instrument | Accrued expenses and other liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   4,309
Derivative liabilities, fair value   11,247
Fuel contracts | Designated as Hedging Instrument | Other long-term liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   137
Derivative liabilities, fair value 15 8,932
Fuel contracts | Not Designated as Hedging Instrument | Prepaid expenses and other assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 19  
Derivative liabilities, fair value 61  
Fuel contracts | Not Designated as Hedging Instrument | Accrued expenses and other liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   141
Derivative liabilities, fair value   1,031
Fuel contracts | Not Designated as Hedging Instrument | Other long-term liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value   280
Foreign currency contracts | Designated as Hedging Instrument | Prepaid expenses and other assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 122  
Total derivatives    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 21,676 4,587
Derivative liabilities, fair value $ 1,235 $ 21,490