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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2023

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
				June 30, 2023								December 31, 2022
				Assets				Liabilities				Assets				Liabilities
Derivatives designated as cash flow hedging instruments:
Fuel hedge contracts		2		$	—			$	1,112			$	—			$	638
Foreign currency exchange hedge contracts		2			723				—				831				6
Total derivatives				$	723			$	1,112			$	831			$	644

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								Six Months Ended
		June 30,								June 30,
		2023				2022				2023				2022
Derivatives:
Fuel Hedge Contracts
Reclassification of derivative (gains) losses to earnings—net of tax			1,434				(4,719	)		$	1,804			$	(7,200	)
Change in fair value of derivatives—net of tax			(252	)			4,584				(2,158	)			13,300
Net change in cash flow derivative fuel hedges—net of tax		$	1,182			$	(135	)		$	(354	)		$	6,100
Foreign Currency Exchange Hedge Contracts
Reclassification of derivative gains to earnings—net of tax		$	(279	)		$	(241	)		$	(321	)		$	—
Change in fair value of derivatives—net of tax			75				—				244				(241	)
Net change in cash flow derivative foreign currency hedges—net of tax		$	(204	)		$	(241	)		$	(77	)		$	(241	)
Total net change in cash flow derivative hedges - net of tax		$	978			$	(376	)		$	(431	)		$	5,859

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								Six Months Ended
				June 30,								June 30,
		Statement of Operations Location		2023				2022				2023				2022
Derivatives:
Fuel hedge contracts		Costs of contract revenues		$	1,918			$	(6,313	)		$	2,413			$	(9,632	)
Foreign currency exchange hedge contracts		Other expense (income)		$	(372	)		$	—				(424	)			—
		Income tax (provision) benefit			390				(1,594	)			502				(2,432	)
				$	1,156			$	(4,719	)		$	1,487			$	(7,200	)