Marketable Securities (Schedule of Available-for-sale Securities) (Details) - USD ($) $ in Thousands	Sep. 23, 2023	Mar. 25, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 76,328	$ 73,376
Gross Unrealized Gains	3	108
Gross Unrealized Losses	(1,653)	(1,997)
Estimated Fair Value (Net Carrying Amount)	74,678	71,487
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	69,725	66,753
Gross Unrealized Gains	3	91
Gross Unrealized Losses	(1,477)	(1,825)
Estimated Fair Value (Net Carrying Amount)	68,251	65,019
Non-U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		510
Gross Unrealized Gains		0
Gross Unrealized Losses		(3)
Estimated Fair Value (Net Carrying Amount)		507
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,093	5,728
Gross Unrealized Gains	0	17
Gross Unrealized Losses	(156)	(151)
Estimated Fair Value (Net Carrying Amount)	4,937	5,594
Agency discount notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,510	385
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(20)	(18)
Estimated Fair Value (Net Carrying Amount)	$ 1,490	$ 367