Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Disclosures [Abstract]

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

Money market funds and restricted cash are valued using quoted market prices in active markets for identical assets as summarized in the following table as of September 30, 2011:

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
	(In thousands)
Cash equivalent money market funds	$	248,898	$	—	$	—	$	248,898
Restricted cash	19,719		—		—		19,719

Financial instruments that are not recorded at fair value

The following table presents the financial instruments that are not recorded at fair value but which require fair value disclosure as of September 30, 2011 and December 31, 2010:

	September 30, 2011		December 31, 2010
	(In thousands)
Carrying value of debt	$	1,325,960	$	1,364,300
Fair value of debt	$	1,460,858	$	1,806,231