Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Mar. 30, 2019
Income Statement [Abstract]
Net sales	$ 1,369,230	$ 1,281,124	$ 1,185,524
Cost of sales	661,929	606,957	588,027
Gross profit	707,301	674,167	597,497
Operating expenses
Research and development	342,759	347,647	375,139
Selling, general and administrative	127,008	131,115	126,502
Restructuring costs	352	21,925	0
Gain on sale of assets	0	0	(4,913)
Total operating expenses	470,119	500,687	496,728
Income from operations	237,182	173,480	100,769
Interest income	6,281	10,458	8,017
Interest expense	(1,057)	(1,057)	(1,057)
U.K. pension settlement	0	0	(13,768)
Other income (expense)	2,840	(1,615)	(217)
Income before income taxes	245,246	181,266	93,744
Provision for income taxes	27,902	21,768	3,753
Net income	$ 217,344	$ 159,498	$ 89,991
Basic earnings per share (in dollars per share)	$ 3.74	$ 2.74	$ 1.50
Diluted earnings per share (in dollars per share)	$ 3.62	$ 2.64	$ 1.46
Basic weighted average common shares outstanding (in shares)	58,106	58,317	60,116
Diluted weighted average common shares outstanding (in shares)	60,060	60,462	61,583