Consolidated Condensed Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Income Statement [Abstract]
Net sales	$ 465,886	$ 347,325	$ 743,139	$ 589,898
Cost of sales	230,442	167,115	367,749	282,216
Gross profit	235,444	180,210	375,390	307,682
Operating expenses
Research and development	102,116	84,810	187,812	163,551
Selling, general and administrative	38,132	31,247	73,279	60,951
Restructuring costs	0	0	0	352
Total operating expenses	140,248	116,057	261,091	224,854
Income from operations	95,196	64,153	114,299	82,828
Interest income	288	1,658	1,308	3,493
Interest expense	(253)	(280)	(512)	(539)
Other income	1,859	784	1,617	895
Income before income taxes	97,090	66,315	116,712	86,677
Provision for income taxes	11,994	6,829	14,407	8,982
Net income	$ 85,096	$ 59,486	$ 102,305	$ 77,695
Basic earnings per share (in dollars per share)	$ 1.48	$ 1.02	$ 1.78	$ 1.33
Diluted earnings per share (in dollars per share)	$ 1.43	$ 0.99	$ 1.72	$ 1.29
Basic weighted average common shares outstanding (in shares)	57,364	58,191	57,473	58,252
Diluted weighted average common shares outstanding (in shares)	59,451	60,127	59,485	60,203