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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2024
Fair Value Disclosures [Abstract] |
Schedule of Fair Values of Financial Instruments and Nonfinancial Assets and Liabilities Measured at the Reporting Date | The fair values of these financial instruments are summarized as follows:
|  |  |  | Fair Value at |
|  | Fair Value Hierarchy Levels |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  | September 30, 2024 |  |  | December 31, 2023 |
|  |  |  | Assets |  |  | Liabilities |  |  | Assets |  |  | Liabilities |
Derivatives designated as cash flow hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel hedge contracts |  | 2 |  | $ | — |  |  | $ | 3,467 |  |  | $ | — |  |  | $ | 2,918 |
Foreign currency exchange hedge contracts |  | 2 |  |  | 2 |  |  |  | 21 |  |  |  | 358 |  |  |  | — |
Interest rate swaps |  | 2 |  |  | — |  |  |  | 536 |  |  |  | — |  |  |  | — |
Total derivatives |  |  |  | $ | 2 |  |  | $ | 4,024 |  |  | $ | 358 |  |  | $ | 2,918 |
Changes in Components of Accumulated Other Comprehensive Income (Loss) | Changes in the components of the accumulated balances of other comprehensive income (loss) are as follows:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Derivatives: |  |  |  |  |  |  |  |  |  |  |  |
Fuel Hedge Contracts |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of derivative losses (gains) to earnings—net of tax |  | $ | 644 |  |  | $ | (297 | ) |  | $ | 882 |  |  | $ | 1,507 |
Change in fair value of derivatives—net of tax |  |  | (2,993 | ) |  |  | 3,271 |  |  |  | (1,293 | ) |  |  | 1,113 |
Net change in cash flow derivative fuel hedges—net of tax |  | $ | (2,349 | ) |  | $ | 2,974 |  |  | $ | (411 | ) |  | $ | 2,620 |
Foreign Currency Exchange Hedge Contracts |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of derivative losses (gains) to earnings—net of tax |  | $ | — |  |  | $ | (198 | ) |  | $ | 42 |  |  | $ | (519 | )
Change in fair value of derivatives—net of tax |  |  | 89 |  |  |  | (621 | ) |  |  | (553 | ) |  |  | (377 | )
Net change in cash flow derivative foreign currency hedges—net of tax |  | $ | 89 |  |  | $ | (819 | ) |  | $ | (511 | ) |  | $ | (896 | )
Interest Rate Swaps |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of derivative gains to earnings—net of tax |  | $ | (112 | ) |  | $ | — |  |  | $ | (112 | ) |  | $ | — |
Change in fair value of derivatives—net of tax |  |  | (289 | ) |  |  | — |  |  |  | (289 | ) |  |  | — |
Net change in cash flow derivative foreign currency hedges—net of tax |  | $ | (401 | ) |  | $ | — |  |  | $ | (401 | ) |  | $ | — |
Total net change in cash flow derivative hedges - net of tax |  | $ | (2,661 | ) |  | $ | 2,155 |  |  | $ | (1,323 | ) |  | $ | 1,724 |
Adjustments Reclassified from Accumulated Balances Other Comprehensive Income (Loss) to Earnings | Adjustments reclassified from accumulated balances of other comprehensive income (loss) to earnings are as follows:
|  |  |  | Three Months Ended |  |  | Nine Months Ended |
|  |  |  | September 30, |  |  | September 30, |
|  | Statement of Operations Location |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Derivatives: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel hedge contracts |  | Costs of contract revenues |  | $ | 861 |  |  | $ | (649 | ) |  | $ | 1,180 |  |  | $ | 1,425 |
Foreign currency exchange hedge contracts |  | Other income (expense) |  |  | — |  |  |  | (13 | ) |  |  | 56 |  |  |  | (437 | )
Interest rate swaps |  | Interest expense—net |  |  | (149 | ) |  |  | — |  |  |  | (149 | ) |  |  | — |
|  | Income tax (provision) benefit |  |  | 180 |  |  |  | (167 | ) |  |  | 275 |  |  |  | — |
|  |  |  | $ | 532 |  |  | $ | (495 | ) |  | $ | 812 |  |  | $ | 988 |

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