FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at fair value on a recurring basis

The following tables present the Company's financial instruments that are measured at fair value on a recurring basis:

	June 30, 2014
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	350,637	$	—	$	—		$	350,637
Commercial paper	—		246,620		—			246,620
Time deposits	—		59,006		—			59,006
Marketable securities:
Corporate debt securities	—		78,581		—			78,581
Equity security	3,030		—		—			3,030
Long-term investments:
Auction rate security	—		—		9,250			9,250
Marketable equity security	9,516		—		—			9,516
Total	$	363,183	$	384,207	$	9,250		$	756,640
Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(41,397	)	$	(41,397	)

	December 31, 2013
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	698,307	$	—	$	—		$	698,307
Commercial paper	—		12,000		—			12,000
Time deposits	—		32,325		—			32,325
Marketable securities:
Corporate debt security	—		1,008		—			1,008
Equity securities	4,996		—		—			4,996
Long-term investments:
Auction rate security	—		—		8,920			8,920
Marketable equity securities	11,711		—		—			11,711
Total	$	715,014	$	45,333	$	8,920		$	769,267
Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(45,828	)	$	(45,828	)

Schedule of changes in assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)

The following tables present the changes in the Company's financial instruments that are measured at fair value on a recurring basis using significant unobservable inputs (Level 3):

	Three Months Ended June 30,
	2014					2013
	Auction Rate Security		Contingent Consideration Arrangements			Auction Rate Security		Contingent Consideration Arrangements
	(In thousands)
Balance at April 1	$	9,150	$	(48,758	)	$	8,580	$	(44,577	)
Total net gains (losses):
Included in earnings (unrealized)	—		(527		)	—		(4,249		)
Included in other comprehensive income (loss)	100		499			180		(368		)
Settlements	—		7,389			—		12
Balance at June 30	$	9,250	$	(41,397	)	$	8,760	$	(49,182	)

	Six Months Ended June 30,
	2014					2013
	Auction Rate Security		Contingent Consideration Arrangements			Auction Rate Security		Contingent Consideration Arrangements
	(In thousands)
Balance at January 1	$	8,920	$	(45,828	)	$	8,100	$	(1,909	)
Total net gains (losses):
Included in earnings (unrealized)	—		(500		)	—		(5,707		)
Included in other comprehensive income (loss)	330		136			660		(368		)
Fair value at date of acquisition	—		(2,835		)	—		(41,387		)
Settlements	—		7,630			—		189
Balance at June 30	$	9,250	$	(41,397	)	$	8,760	$	(49,182	)

Fair Value, by Balance Sheet Grouping

The following table presents the carrying value and the fair value of financial instruments measured at fair value only for disclosure purposes:

	June 30, 2014						December 31, 2013
	Carrying Value			Fair Value			Carrying Value			Fair Value
	(In thousands)
Liabilities:
Long-term debt	$	(1,080,000	)	$	(1,109,517	)	$	(1,080,000	)	$	(1,058,396	)