Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Mar. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 1,229,779	$ 1,140,240	$ 1,161,728
Current period foreign exchange translation	1,862	68	(3,125)
Current period marketable securities activity	5,673	(2,803)	2,823
Cumulative effect of adoption of ASU 2018-02	0	(257)	0
Balance	1,389,005	1,229,779	1,140,240
Foreign Currency
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,568)	(1,636)
Current period foreign exchange translation	1,862	68
Current period marketable securities activity	0	0
Cumulative effect of adoption of ASU 2018-02		0
Tax effect	0	0
Balance	294	(1,568)	(1,636)
Unrealized Gains (Losses) on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,644)	570
Current period foreign exchange translation	0	0
Current period marketable securities activity	5,673	(2,803)
Cumulative effect of adoption of ASU 2018-02		0
Tax effect	(1,191)	589
Balance	2,838	(1,644)	570
Accumulated Other Comprehensive Income / (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(3,469)	(1,066)	(11,361)
Current period foreign exchange translation	1,862	68
Current period marketable securities activity	5,673	(2,803)
Cumulative effect of adoption of ASU 2018-02	(257)	(257)
Tax effect	(1,191)	589
Balance	$ 2,875	$ (3,469)	$ (1,066)