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Fair Value Measurements (Changes in Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Derivatives Fair Value [Line Items]    
Net change in cash flow derivative hedges—net of tax [1] $ 1,288 $ (1,409)
Fuel Hedge Contracts [Member]    
Derivatives Fair Value [Line Items]    
Reclassification of derivative (gains) losses to earnings - net of tax (122) 370
Change in fair value of derivatives—net of tax 2,011 (1,906)
Net change in cash flow derivative hedges—net of tax 1,889 (1,536)
Foreign Currency Exchange Hedge Contracts [Member]    
Derivatives Fair Value [Line Items]    
Reclassification of derivative (gains) losses to earnings - net of tax 36 (42)
Change in fair value of derivatives—net of tax (637) 169
Net change in cash flow derivative hedges—net of tax $ (601) $ 127
[1] Net of income tax (provision) benefit of $(435) and $476 for the three months ended March 31, 2024 and 2023, respectively.