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Fair Value Measurements (Changes in Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Derivatives Fair Value [Line Items] |  |  |  |  |
Net change in cash flow derivative hedges—net of tax | [1] | $ 2,155 | $ (7,222) | $ 1,724 | $ (1,363)
Fuel Hedge Contracts [Member] |  |  |  |  |
Derivatives Fair Value [Line Items] |  |  |  |  |
Reclassification of derivative (gains) losses to earnings - net of tax |  | (297) | (2,358) | 1,507 | (9,558)
Change in fair value of derivatives—net of tax |  | 3,271 | (3,590) | 1,113 | 9,228
Net change in cash flow derivative hedges—net of tax |  | 2,974 | (5,948) | 2,620 | (330)
Foreign Currency Exchange Hedge Contracts [Member] |  |  |  |  |
Derivatives Fair Value [Line Items] |  |  |  |  |
Reclassification of derivative (gains) losses to earnings - net of tax |  | (198) | (196) | (519) | (196)
Change in fair value of derivatives—net of tax |  | (621) | (1,078) | (377) | (837)
Net change in cash flow derivative hedges—net of tax |  | $ (819) | $ (1,274) | $ (896) | $ (1,033)
[1] | Net of income tax (provision) benefit of $(728) and $2,176 for the three months ended September 30, 2023 and 2022, respectively. Net of income tax (provision) benefit of $(583) and $197 for the nine months ended September 30, 2023 and 2022, respectively.

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- Definition Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A + Details
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