The following tables summarize the Company’s cash, cash equivalents, and investments’ 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 March 31, 2015 and 2014 (in thousands):



March 31, 2015	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	$	273,350	$	—	$	—		$	273,350	$	273,350	$	—	$	—
Level 1:
Mutual Funds	5,398		147		(25		)	5,520		—		5,520		—
Level 2:
Government Agency Securities	89,875		37		(22		)	89,890		—		43,024		46,866
Commercial Paper	17,574		10		—			17,584		3,500		14,084		—
Corporate Bonds	95,759		199		(3		)	95,955		—		35,231		60,724
Subtotal	203,208		246		(25		)	203,429		3,500		92,339		107,590

Total cash, cash equivalents and investments measured at fair value	$	481,956	$	393	$	(50	)	$	482,299	$	276,850	$	97,859	$	107,590



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
Certificates of Deposits ("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