FAIR VALUE MEASUREMENTS

Accounting rules for fair value clarify that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the Company utilizes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:


Level 1-	Observable inputs such as quoted prices in active markets;


Level 2-	Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and


Level 3-	Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

Marketable Debt Instruments

Marketable debt instruments include instruments such as corporate bonds and debt, government agency bonds, bank deposits, municipal bonds, and money market fund deposits. When the Company uses observable market prices for identical securities that are traded in less active markets, the Company classifies its marketable debt instruments as Level 2. When observable market prices for identical securities are not available, the Company prices its marketable debt instruments using non-binding market consensus prices that are corroborated with observable market data; quoted market prices for similar instruments; or pricing models, such as a discounted cash flow model, with all significant inputs derived from or corroborated with observable market data. Non-binding market consensus prices are based on the proprietary valuation models of pricing providers or brokers. These valuation models incorporate a number of inputs, including non-binding and binding broker quotes; observable market prices for identical or similar securities; and the internal assumptions of pricing providers or brokers that use observable market inputs and, to a lesser degree, unobservable market inputs. The Company corroborates non-binding market consensus prices with observable market data using statistical models when observable market data exists. The discounted cash flow model uses observable market inputs, such as LIBOR-based yield curves, currency spot and forward rates, and credit ratings.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Assets measured at fair value on a recurring basis at March 31, 2014 are as follows (amounts in thousands):



	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Money market mutual funds	$	192,159	$	—	$	—	$	192,159
Corporate bonds and debt	—		937,776		6,190		943,966
Government agency bonds	—		681,394		—		681,394
Deposit accounts	—		274,444		—		274,444
Municipal bonds	—		41,709		—		41,709
Auction rate securities	—		—		9,825		9,825
Total assets measured at fair value	$	192,159	$	1,935,323	$	16,015	$	2,143,497

Assets and liabilities measured at fair value on a recurring basis at March 31, 2013 are as follows (amounts in thousands):



	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Money market mutual funds	$	100,878	$	—	$	—	$	100,878
Marketable equity securities	5,509		—		—		5,509
Corporate bonds and debt	—		678,932		6,190		685,122
Government agency bonds	—		558,153		—		558,153
Deposit accounts	—		427,456		—		427,456
Municipal bonds	—		25,138		—		25,138
Auction rate securities	—		—		33,791		33,791
Total assets measured at fair value	$	106,387	$	1,689,679	$	39,981	$	1,836,047

Liabilities
Contingent consideration	$	—	$	—	$	19,100	$	19,100
Total liabilities measured at fair value	$	—	$	—	$	19,100	$	19,100

There were no transfers between Level 1 and Level 2 during fiscal 2014 or fiscal 2013.

At March 31, 2014, the Company's ARS for which auctions were unsuccessful are made up of securities related to the insurance industry valued at $9.8 million with a par value of $22.4 million. At March 31, 2013, the Company's ARS for which auctions were unsuccessful were made up of bonds related to the insurance industry valued at $9.8 million, securities related to the energy and telecommunications sectors valued at $5.3 million, and student loan securities valued at $18.7 million.

The Company estimated the fair value of its ARS, which are classified as Level 3 securities, based on the following: (i) the underlying structure of each security; (ii) the present value of future principal and interest payments discounted at rates considered to reflect current market conditions; (iii) consideration of the probabilities of default, auction failure, or repurchase at par for each period; and (iv) estimates of the recovery rates in the event of default for each security. The significant unobservable inputs used in the fair value measurement of the insurance sector ARS as of March 31, 2014 were estimated risk free discount rates, liquidity risk premium, and the liquidity horizon. The risk free discount rate applied to these securities was 2% to 2.5% adjusted for the liquidity risk premium which ranged from 9.1% to 29.5%. The anticipated liquidity horizon ranged from 7 to 10 years. A significant increase in the liquidity premium or discount rate, in isolation, would lead to a significantly lower fair value measurement. A significant increase in the liquidity horizon, in isolation, would lead to a significantly lower fair value measurement. Each quarter the Company investigates material changes in the fair value measurements of its ARS.

Level 3 liabilities at March 31, 2013 include contingent consideration from the Company's Roving Networks acquisition, which was fully paid as of March 31, 2014.

The following tables present a reconciliation for all assets and liabilities measured at fair value on a recurring basis, excluding accrued interest components, using significant unobservable inputs (Level 3) for the years ended March 31, 2014 and March 31, 2013 (amounts in thousands):



Year ended March 31, 2014	Auction Rate Securities			Corporate Debt		Contingent Consideration			Total Gains (Losses)
Balance at March 31, 2013	$	33,791		$	6,190	$	(19,100	)	$	—
Total gains (losses) (realized and unrealized):
Included in earnings	1,101			—		(1,370		)	(269		)
Included in other comprehensive income	(332		)	—		—			(332		)
Purchases, sales, issuances, and settlements, net	(24,735		)	—		20,470			—
Balance at March 31, 2014	$	9,825		$	6,190	$	—		$	(601	)



Year ended March 31, 2013	Auction Rate Securities			Corporate Debt		Contingent Consideration			Total Gains (Losses)
Balance at March 31, 2012	$	10,246		$	4,625	$	—		$	—
Total gains (losses) (realized and unrealized):
Included in earnings	(412		)	—		(4,400		)	(4,813		)
Included in other comprehensive income	332			—		—			332
Purchases, sales, issuances, and settlements, net	(650		)	1,565		—			—
Acquisition-related	24,275			—		(14,700		)	—
Balance at March 31, 2013	$	33,791		$	6,190	$	(19,100	)	$	(4,481	)

Gains and losses recognized in earnings using Level 3 inputs for auction rate securities are credited or charged to Other Income (Expense) on the Consolidated Statements of Income. Gains and losses recognized in earnings using Level 3 inputs related to the revaluation of contingent consideration are credited or charged to Special Charges on the Consolidated Statements of Income.

Assets measured at fair value on a recurring basis are presented/classified on the consolidated balance sheets at March 31, 2014 as follows (amounts in thousands):



	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Cash and cash equivalents	$	192,159	$	274,444	$	—	$	466,603
Short-term investments	—		878,182		—		878,182
Long-term investments	—		782,697		16,015		798,712
Total assets measured at fair value	$	192,159	$	1,935,323	$	16,015	$	2,143,497

Assets measured at fair value on a recurring basis are presented/classified in the consolidated balance sheets at March 31, 2013 as follows (amounts in thousands):



	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Cash and cash equivalents	$	100,878	$	427,456	$	—	$	528,334
Short-term investments	—		1,050,263		—		1,050,263
Long-term investments	5,509		211,960		39,981		257,450
Total assets measured at fair value	$	106,387	$	1,689,679	$	39,981	$	1,836,047

Financial Assets Not Recorded at Fair Value on a Recurring Basis

The Company's non-marketable equity and cost method investments are not recorded at fair value on a recurring basis. These investments are monitored on a quarterly basis for impairment charges. The investments will only be recorded at fair value when an impairment charge is recognized. During the years ended March 31, 2014 and March 31, 2013, the Company recognized impairment charges of $0.7 million and $0.5 million, respectively, on these investments. These investments are included in other assets on the consolidated balance sheet.