The following tables summarize the Company’s cash and available-for-sale securities’ adjusted cost, gross unrealized gains, gross unrealized losses, and fair value by significant investment category recorded as cash and cash equivalents, short-term, or long-term investments as of September 30, 2014 and March 31, 2014 (in thousands):



September 30, 2014	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash & Cash Equivalents		Short-term investments (due in 1 year or less)		Long-term investments (due in 1 to 3 years)
Cash	$	263,730	$	—	$	—		$	263,730	$	263,730	$	—	$	—
Level 1:
Mutual Funds	3,998		104		(21		)	4,081		—		4,081		—
Level 2:
Government Agency Securities	73,093		54		(19		)	73,128		—		18,477		54,651
Commercial Paper	32,581		4		(1		)	32,584		4,499		28,085		—
Corporate Bonds	96,502		231		(17		)	96,716		—		39,647		57,069
Subtotal	202,176		289		(37		)	202,428		4,499		86,209		111,720

Total cash, cash equivalents and investments measured at fair value	$	469,904	$	393	$	(58	)	$	470,239	$	268,229	$	90,290	$	111,720



March 31, 2014	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash & Cash Equivalents		Short-term investments (due in 1 year or less)		Long-term investments (due in 1 to 3 years)
Cash	$	232,704	$	—	$	—		$	232,704	$	232,704	$	—	$	—
Level 1:
Mutual Funds	1,779		31		(3		)	1,807		—		1,807		—
Level 2:
Government Agency Securities	53,976		43		(9		)	54,010		—		21,325		32,685
Commercial Paper	47,766		7		—			47,773		—		47,773		—
Corporate Bonds	98,289		195		(17		)	98,467		—		30,810		67,657
CDs	1,002		—		—			1,002		—		1,002		—
Subtotal	201,033		245		(26		)	201,252		—		100,910		100,342

Total cash, cash equivalents and investments measured at fair value	$	435,516	$	276	$	(29	)	$	435,763	$	232,704	$	102,717	$	100,342