Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Schedule of Carrying Values and Estimated Fair Values of Debt

The following table presents the carrying amount and estimated fair value of our outstanding short-term and long-term debt obligations as of June 30, 2016 and December 31, 2015, respectively:

	As of June 30, 2016				As of December 31, 2015
(In thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current portion	$	1,233,726	$	1,148,307	$	1,295,761	$	1,125,124

Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes the financial instruments measured at fair value on a recurring basis classified in the fair value hierarchy (Level 1, 2 or 3) based on the inputs used for valuation in the accompanying unaudited condensed consolidated balance sheets as of June 30, 2016 and in the audited condensed consolidated balance sheets as of December 31, 2015:

	As of June 30, 2016											As of December 31, 2015
Assets (liabilities) in thousands	Level 1			Level 2			Level 3		Total			Level 1		Level 2		Level 3		Total
Interest rate swaps	$	—		$	(1,917	)	$	—	$	(1,917	)	$	—	$	11,404	$	—	$	11,404
Foreign currency forward contracts	(9,549		)	—			—		(9,549		)	21,383		—		—		21,383
Cross currency swaps	—			50,566			—		50,566			—		64,083		—		64,083
Total	$	(9,549	)	$	48,649		$	—	$	39,100		$	21,383	$	75,487	$	—	$	96,870