Fair Value Measurements, Financial Instruments and Credit Risk (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Measurement of Financial Liabilities at Fair Value on Recurring Basis

          Our assessment of the significance of a particular input to the fair value measurement requires judgment, which judgment may affect the valuation of their fair value and their placement within the fair value hierarchy levels.

	Balance Sheet Location	June 30, 2013			Fair Value Measurements at Reporting Date Using
					Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
					(In thousands)
Retirement plan asset—noncurrent	Other long-term assets		1,519			1,519		0			0
Derivative liability—current	Other payables and accruals		(135	)		0		(135	)		0
Total		$	1,384		$	1,519	$	(135	)	$	0

	Balance Sheet Location	December 31, 2012			Fair Value Measurements at Reporting Date Using
					Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
					(In thousands)
Derivative asset—current	Other current assets	$	34		$	0	$	34		$	0
Retirement plan asset—noncurrent	Other long-term assets		860			860		0			0
Derivative liability—current	Other payables and accruals		(578	)		0		(578	)		0
Derivative liability—noncurrent	Other long-term liabilities		(258	)		0		(258	)		0
Total		$	58		$	860	$	(802	)	$	0

Carrying Value and Approximate Fair Value of Long-Term Debt

The following table presents the carrying values and approximate fair values of our long-term debt as of June 30, 2013 and December 31, 2012:

	June 30, 2013				December 31, 2012
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
Term loans	$	0	$	0	$	96,875	$	96,875
6.75% unsecured notes	$	351,066	$	353,500	$	351,142	$	364,000