Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Valuation of money market funds and restricted cash using quoted market prices in active markets for identical assets

Our fair value measurements consist of the following:

	December 31,
	2013		2012
	(In thousands)
Recurring fair value measurements:
Cash equivalent money market funds (Level 1)	$	300,352	$	151,066
Restricted cash money market funds (Level 1)	2,681		2,680
Nonrecurring fair value measurements:
Long-lived assets held for use or disposal (Level 3)	$	1,055	$	868

	Year Ended December 31,
	2013		2012		2011
	(In thousands)
Nonrecurring fair value measurements:
Losses on long-lived assets held for use or disposal (Level 3)	$	1,529	$	763	$	3,336

Financial instruments that are not recorded at fair value

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

	December 31, 2013				December 31, 2012
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior notes (Level 1)	$	1,321,443	$	1,276,390	$	1,061,945	$	1,045,000
Convertible senior subordinated notes (Level 1)	102,585		56,350		371,975		250,000
Term loans (Level 2)	320,000		320,000		269,200		250,000
Total debt	$	1,744,028	$	1,652,740	$	1,703,120	$	1,545,000