Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of recurring and nonrecurring fair value measurements

Our fair value measurements consist of the following:

	March 31, 2014		December 31, 2013
	(In thousands)
Recurring fair value measurements:
Assets:
Cash equivalent money market funds (Level 1)	$	313,598	$	300,352
Restricted cash money market funds (Level 1)	2,681		2,681
Nonrecurring fair value measurements:
Long-lived assets held for use or disposal (Level 3)	$	—	$	1,055

	For the Three Months Ended March 31,
	2014		2013
	(In thousands)
Nonrecurring fair value measurements:
Losses on long-lived assets held for use or disposal (Level 3)	$	286	$	481

Schedule of fair value of debt

The following table presents the fair value of financial instruments that are not recorded at fair value on a recurring basis:

	March 31, 2014				December 31, 2013
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior notes (Level 1)	$	1,331,397	$	1,276,252	$	1,321,443	$	1,276,390
Convertible senior subordinated notes (Level 1)	127,244		56,350		102,585		56,350
Term loans (Level 2)	320,000		320,000		320,000		320,000
Total debt	$	1,778,641	$	1,652,602	$	1,744,028	$	1,652,740