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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

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 Measurements at Reporting Date Using
Description	At December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Fuel hedge contracts	$	4,388	$	—	$	4,388	$	—

			Fair Value Measurements at Reporting Date Using
Description	At December 31, 2014		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Fuel hedge contracts	$	3,029	$	—	$	3,029	$	—

Schedule Fair Value Measurements Balance Sheet Location

The fair value of the fuel hedge contracts outstanding as of December 31, 2015 and 2014 is as follows:

	Balance Sheet Location	Fair Value at December 31,
		2015		2014
Liability derivatives:
Derivatives not designated as hedges
Fuel hedge contracts	Accrued expenses	$	4,388	$	3,029

Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation

The fair value of goodwill was determined using quantitative models that contained significant unobservable inputs and accordingly is a Level 3 fair value measurement. See Note 6.

	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
	2015
Goodwill
Balance at January 1,	$	86,326
Impairment of goodwill		(2,750	)
Balance at December 31, 2015	$	83,576

Changes In Components Of Accumulated Other Comprehensive Loss

Changes in the components of the accumulated balances of other comprehensive income are as follows:

	2015			2014			2013
Cumulative translation adjustments—net of tax	$	(1,249	)	$	(62	)	$	(397	)
Derivatives:
Reclassification of derivative losses (gains) to earnings—net of tax		—			(332	)		270
Change in fair value of derivatives—net of tax		—			133			34
Net unrealized (gain) loss on derivatives—net of tax		—			(199	)		304
Total other comprehensive loss	$	(1,249	)	$	(261	)	$	(93	)

Adjustments Reclassified From Accumulated Other Comprehensive Loss To Earnings

Adjustments reclassified from accumulated balances of other comprehensive income to earnings are as follows:

	Statement of Operations Location	2014			2013
Derivatives:
Fuel hedge contracts	Costs of contract revenues	$	(286	)	$	450
	Income tax benefit		46			180
		$	(332	)	$	270