Marketable Securities (Tables)

12 Months Ended

Mar. 27, 2021

Marketable Securities [Abstract]

Schedule of Available-for-sale Securities

The following table is a summary of available-for-sale securities (in thousands):

As of March 27, 2021	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value (Net Carrying Amount)
Corporate debt securities	$	348,971	$	3,403	$	(313)	$	352,061
Non-U.S. government securities	13,462		172		(1)		13,633
Agency discount notes	2,759		4		(1)		2,762
Total securities	$	365,192	$	3,579	$	(315)	$	368,456

As of March 28, 2020	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value (Net Carrying Amount)
Corporate debt securities	$	286,668	$	1,157	$	(3,993)	$	283,832
Non-U.S. government securities	12,483		260		—		12,743
U.S. Treasury securities	8,839		167		—		9,006
Total securities	$	307,990	$	1,584	$	(3,993)	$	305,581

Schedule of Cost and Estimated Fair Value of Available-for-sale Securities by Contractual Maturity

The cost and estimated fair value of available-for-sale investments by contractual maturity were as follows:

	March 27, 2021				March 28, 2020
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Within 1 year	$	54,895	$	55,698	$	22,012	$	22,008
After 1 year	310,297		312,758		285,978		283,573
Total	$	365,192	$	368,456	$	307,990	$	305,581