Investments (Tables)

6 Months Ended

Oct. 02, 2016

Investments, Debt and Equity Securities [Abstract]

Available-for-sale investments at October 2, 2016 were as follows:



(in thousands)	Cost			Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government treasuries and agencies securities	$	62,660		$	77	$	(34	)	$	62,703
Money market funds	56,363			—		—			56,363
Asset-backed securities	14,992			36		—			15,028
Corporate bonds	141,899			286		(128		)	142,057
International government bonds	4,845			25		—			4,870
Corporate commercial paper	25,014			—		(73		)	24,941
Bank deposits	11,767			—		—			11,767
Repurchase agreements	48			—		—			48
Municipal bonds	900			—		—			900
Total available-for-sale investments	318,488			424		(235		)	318,677
Less amounts classified as cash equivalents	(58,315		)	—		—			(58,315		)
Short-term investments	$	260,173		$	424	$	(235	)	$	260,362

Available-for-sale investments at April 3, 2016 were as follows:



(in thousands)	Cost			Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government treasuries and agencies securities	$	32,374		$	146	$	(1	)	$	32,519
Money market funds	124,504			—		—			124,504
Asset-backed securities	10,518			4		(7		)	10,515
Corporate bonds	91,321			246		(179		)	91,388
International government bonds	2,195			13		—			2,208
Corporate commercial paper	1,992			—		—			1,992
Bank deposits	11,711			—		—			11,711
Repurchase agreements	114			—		—			114
Municipal bonds	900			—		—			900
Total available-for-sale investments	275,629			409		(187		)	275,851
Less amounts classified as cash equivalents	(124,618		)	—		—			(124,618		)
Short-term investments	$	151,011		$	409	$	(187	)	$	151,233

Contractual Maturity of Available-For-Sale Debt Securities

The cost and estimated fair value of available-for-sale securities at October 2, 2016, by contractual maturity, were as follows:



(in thousands)	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	127,225	$	127,152
Due in 1-2 years	75,786		75,883
Due in 2-5 years	115,477		115,642
Total investments in available-for-sale securities	$	318,488	$	318,677

Gross Unrealized Losses and Fair Value of Investments in Continuous Loss Position

The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses as of October 2, 2016, aggregated by investment category and length of time that individual securities have been in a continuous loss position.



	Less Than 12 Months					12 Months or Greater				Total
(in thousands)	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate bonds	$	64,389	$	(128	)	$	—	$	—	$	64,389	$	(128	)
U.S. government treasuries and agencies securities	36,109		(34		)	—		—		36,109		(34		)
Corporate commercial paper	$	6,927	$	(73	)	$	—	$	—	$	6,927	$	(73	)
Total	$	107,425	$	(235	)	$	—	$	—	$	107,425	$	(235	)

The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses, as of April 3, 2016, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.



	Less Than 12 Months					12 Months or Greater				Total
(in thousands)	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate bonds	$	33,407	$	(179	)	$	—	$	—	$	33,407	$	(179	)
Asset-backed securities	4,979		(7		)	—		—		4,979		(7		)
U.S. government treasuries and agencies securities	6,097		(1		)	—		—		6,097		(1		)
Total	$	44,483	$	(187	)	$	—	$	—	$	44,483	$	(187	)