FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Schedule of assets 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, 2015
	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	$	207,014	$	—	$	—		$	207,014
Commercial paper	—		76,789		—			76,789
Time deposits	—		32,457		—			32,457
Marketable securities:
Corporate debt securities	—		232,917		—			232,917
Equity security	606		—		—			606
Long-term investments:
Auction rate security	—		—		6,630			6,630
Marketable equity security	11,388		—		—			11,388
Total	$	219,008	$	342,163	$	6,630		$	567,801
Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(31,858	)	$	(31,858	)

	December 31, 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	$	174,720	$	—	$	—		$	174,720
Commercial paper	—		388,801		—			388,801
Time deposits	—		42,914		—			42,914
Marketable securities:
Corporate debt securities	—		159,197		—			159,197
Equity security	1,451		—		—			1,451
Long-term investments:
Auction rate security	—		—		6,070			6,070
Marketable equity security	7,410		—		—			7,410
Total	$	183,581	$	590,912	$	6,070		$	780,563
Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(30,140	)	$	(30,140	)

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,
	2015					2014
	Auction Rate Security		Contingent Consideration Arrangements			Auction Rate Security		Contingent Consideration Arrangements
	(In thousands)
Balance at April 1	$	6,190	$	(20,964	)	$	9,150	$	(48,758	)
Total net gains (losses):
Included in earnings:
Fair value adjustments	—		9,950			—		(527		)
Foreign currency exchange losses	—		(4		)	—		—
Included in other comprehensive income (loss)	440		384			100		499
Fair value at date of acquisition	—		(26,749		)	—		—
Settlements	—		5,525			—		7,389
Balance at June 30	$	6,630	$	(31,858	)	$	9,250	$	(41,397	)

	Six Months Ended June 30,
	2015					2014
	Auction Rate Security		Contingent Consideration Arrangements			Auction Rate Security		Contingent Consideration Arrangements
	(In thousands)
Balance at January 1	$	6,070	$	(30,140	)	$	8,920	$	(45,828	)
Total net gains (losses):
Included in earnings:
Fair value adjustments	—		16,946			—		(500		)
Foreign currency exchange gains	—		626			—		—
Included in other comprehensive income (loss)	560		2,117			330		136
Fair value at date of acquisition	—		(27,112		)	—		(2,835		)
Settlements	—		5,705			—		7,630
Balance at June 30	$	6,630	$	(31,858	)	$	9,250	$	(41,397	)

Schedule of changes in 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,
	2015					2014
	Auction Rate Security		Contingent Consideration Arrangements			Auction Rate Security		Contingent Consideration Arrangements
	(In thousands)
Balance at April 1	$	6,190	$	(20,964	)	$	9,150	$	(48,758	)
Total net gains (losses):
Included in earnings:
Fair value adjustments	—		9,950			—		(527		)
Foreign currency exchange losses	—		(4		)	—		—
Included in other comprehensive income (loss)	440		384			100		499
Fair value at date of acquisition	—		(26,749		)	—		—
Settlements	—		5,525			—		7,389
Balance at June 30	$	6,630	$	(31,858	)	$	9,250	$	(41,397	)

	Six Months Ended June 30,
	2015					2014
	Auction Rate Security		Contingent Consideration Arrangements			Auction Rate Security		Contingent Consideration Arrangements
	(In thousands)
Balance at January 1	$	6,070	$	(30,140	)	$	8,920	$	(45,828	)
Total net gains (losses):
Included in earnings:
Fair value adjustments	—		16,946			—		(500		)
Foreign currency exchange gains	—		626			—		—
Included in other comprehensive income (loss)	560		2,117			330		136
Fair value at date of acquisition	—		(27,112		)	—		(2,835		)
Settlements	—		5,705			—		7,630
Balance at June 30	$	6,630	$	(31,858	)	$	9,250	$	(41,397	)

Carrying value and the fair value of financial instruments measured at fair value only for disclosure purposes

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

	June 30, 2015						December 31, 2014
	Carrying Value			Fair Value			Carrying Value			Fair Value
	(In thousands)
Current portion of long-term debt	$	(80,000	)	$	(80,000	)	$	—		$	—
Long-term debt, net of current portion	(1,000,000		)	(1,025,345		)	(1,080,000		)	(1,099,813		)