Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

The following is a summary of marketable securities held at March 31, 2013 and December 31, 2012 (in thousands):



			Gross Unrealized							Classification on Balance Sheet
As of March 31, 2013	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	3,275	$	—	$	—		$	3,275	$	3,221	$	54
Commercial paper	7,488		4		—			7,492		7,492		—
Corporate debt securities	715,141		1,306		(137		)	716,310		320,683		395,627
U.S. government agency obligations	190,061		79		(58		)	190,082		16,555		173,527
	$	915,965	$	1,389	$	(195	)	$	917,159	$	347,951	$	569,208


			Gross Unrealized							Classification on Balance Sheet
As of December 31, 2012	Cost		Gains		Losses			Aggregate Fair Value		Short-term Marketable Securities		Long-term Marketable Securities
Available-for-sale securities:
Certificates of deposit	$	3,100	$	—	$	—		$	3,100	$	3,057	$	43
Commercial paper	7,481		2		(1		)	7,482		7,482		—
Corporate debt securities	691,931		1,269		(205		)	692,995		217,548		475,447
U.S. government agency obligations	189,607		95		(28		)	189,674		7,505		182,169
	$	892,119	$	1,366	$	(234	)	$	893,251	$	235,592	$	657,659

Schedule of Fair Value Measurement

The following tables detail the fair value measurements within the fair value hierarchy of the Company’s financial assets, including investments and cash equivalents and liabilities, at March 31, 2013 and December 31, 2012 (in thousands):




	Total Fair Value at			Fair Value Measurements at Reporting Date Using
	March 31, 2013			Level 1		Level 2		Level 3
Marketable Securities:
Money market funds	$	413		$	413	$	—	$	—
Certificates of deposit	7,775			7,775		—		—
Commercial paper	7,492			—		7,492		—
Corporate debt securities	716,310			—		716,310		—
U.S. government agency obligations	190,082			—		190,082		—
	$	922,072		$	8,188	$	913,884	$	—
Other Assets:
Note receivable	$	18,882		$	—	$	—	$	18,882
	$	18,882		$	—	$	—	$	18,882


	Total Fair Value at			Fair Value Measurements at Reporting Date Using
	December 31, 2012			Level 1		Level 2		Level 3
Marketable Securities:
Money market funds	$	22,255		$	22,255	$	—	$	—
Certificates of deposit	7,473			7,473		—		—
Commercial paper	9,482			—		9,482		—
Corporate debt securities	692,995			—		692,995		—
U.S. government agency obligations	189,674			—		189,674		—
	$	921,879		$	29,728	$	892,151	$	—
Liabilities:
Contingent consideration obligation related to Verivue acquisition	$	(1,200	)	$	—	$	—	$	(1,200	)
	$	(1,200	)	$	—	$	—	$	(1,200	)

Schedule of Contractual Maturities of Marketable Securities and Other Investment Related Assets

Contractual maturities of the Company’s marketable securities held at March 31, 2013 and December 31, 2012 were as follows (in thousands):



	March 31, 2013		December 31, 2012
Available-for-sale securities:
Due in 1 year or less	$	347,951	$	235,592
Due after 1 year through 5 years	569,208		657,659
	$	917,159	$	893,251

FairValueAssetsAndLiabiltiesUnobservableInputReconciliation

The following tables reflect the activity for the Company’s major classes of assets and liabilities measured at fair value using Level 3 inputs at March 31, 2013 and December 31, 2012 (in thousands):



	Other Assets- Note Receivable		Other Long-Term Liabilities- Contingent Consideration Obligation
Balance as of December 31, 2012	$	—	$	(1,200	)
Fair value adjustment for contingent consideration for acquisition of Verivue	—		1,200
Fair value of note receivable	18,882		—
Balance as of March 31, 2013	$	18,882	$	—

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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+ Details

- Definition

The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis.

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