FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2012

FAIR VALUE MEASUREMENTS

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

	June 30, 2012
	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:
Treasury and government agency money market funds	$	304,695	$	—	$	—	$	304,695
Money market funds		7,848		—		—		7,848
Commercial paper		—		291,427		—		291,427
Time deposits		—		4,550		—		4,550
Marketable securities:
Corporate debt securities		—		26,476		—		26,476
States of the U.S. and state political subdivisions		—		112,121		—		112,121
Long-term investments:
Auction rate security		—		—		6,730		6,730
Marketable equity securities		92,047		—		—		92,047
Total	$	404,590	$	434,574	$	6,730	$	845,894

	December 31, 2011
	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:
Treasury and government agency money market funds	$	321,314	$	—	$	—		$	321,314
Commercial paper		—		237,942		—			237,942
Time deposits		—		4,750		—			4,750
Marketable securities:
Corporate debt securities		—		48,705		—			48,705
States of the U.S. and state political subdivisions		—		112,323		—			112,323
Equity security		4,667		—		—			4,667
Long-term investments:
Auction rate security		—		—		5,870			5,870
Marketable equity securities		74,691		—		—			74,691
Total	$	400,672	$	403,720	$	5,870		$	810,262
Liabilities:
Contingent consideration arrangement	$	—	$	—	$	(10,000	)	$	(10,000	)

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

	Three Months Ended June 30,
	2012			2011
	Auction Rate Security			Auction Rate Security			Contingent Consideration Arrangement
	(In thousands)
Balance at April 1	$	7,720		$	9,050		$	(40,000	)
Total net losses (realized and unrealized):
Included in other comprehensive income		(990	)		(370	)		—
Settlements		—			—			30,000
Balance at June 30	$	6,730		$	8,680		$	(10,000	)

	Six Months Ended June 30,
	2012					2011
	Auction Rate Security		Contingent Consideration Arrangement			Auction Rate Securities			Contingent Consideration Arrangement
	(In thousands)
Balance at January 1	$	5,870	$	(10,000	)	$	13,100		$	—
Total net gains (realized and unrealized):
Included in other comprehensive income		860		—			580			—
Fair value at date of acquisition		—		—			—			(40,000	)
Settlements		—		10,000			(5,000	)		30,000
Balance at June 30	$	6,730	$	—		$	8,680		$	(10,000	)