Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

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

Our recurring fair value measurements consist of the following:

	December 31,
	2015		2014
	(In thousands)
Cash equivalent money market funds (Level 1)	$	81,473	$	145,938
Restricted cash money market funds (Level 1)	2,000		2,681

Financial instruments that are not recorded at fair value

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

	December 31, 2015				December 31, 2014
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior notes (Level 1)	$	902,563	$	930,222	$	1,268,619	$	1,275,824
Revolving credit facilities and term loans (Level 2)	664,085		665,655		254,999		255,000
Total debt	$	1,566,648	$	1,595,877	$	1,523,618	$	1,530,824