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 June 30, 2016 and March 31, 2016 (in thousands):



June 30, 2016	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	$	215,580	$	—	$	—		$	215,580	$	215,580	$	—	$	—
Level 1:
Mutual Funds	10,871		131		(362		)	10,640		—		10,640		—
US Treasury Notes	24,024		53		—			24,077		—		13,978		10,099
Subtotal	34,895		184		(362		)	34,717		—		24,618		10,099
Level 2:
Government Agency Securities	61,399		79		(3		)	61,475		—		8,533		52,942
Commercial Paper	57,167		—		—			57,167		11,893		45,274		—
Corporate Bonds	141,424		396		(57		)	141,763		—		76,240		65,523
Certificates of Deposits ("CDs")	20,940		—		—			20,940		—		17,234		3,706
Subtotal	280,930		475		(60		)	281,345		11,893		147,281		122,171

Total cash, cash equivalents and investments measured at fair value	$	531,405	$	659	$	(422	)	$	531,642	$	227,473	$	171,899	$	132,270



March 31, 2016	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	$	232,600	$	—	$	—		$	232,600	$	232,600	$	—	$	—
Level 1:
Mutual Funds	10,025		32		(548		)	9,509		—		9,509		—
US Treasury Notes	25,051		21		(9		)	25,063		—		12,993		12,070
Subtotal	35,076		53		(557		)	34,572		—		22,502		12,070
Level 2:
Government Agency Securities	72,698		24		(20		)	72,702		—		10,521		62,181
Commercial Paper	37,628		—		—			37,628		650		36,978		—
Corporate Bonds	147,662		234		(97		)	147,799		2,016		77,115		68,668
Certificates of Deposits ("CDs")	15,639		—		—			15,639		—		12,935		2,704
Subtotal	273,627		258		(117		)	273,768		2,666		137,549		133,553

Total cash, cash equivalents and investments measured at fair value	$	541,303	$	311	$	(674	)	$	540,940	$	235,266	$	160,051	$	145,623