CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 01, 2018	Apr. 02, 2017	Apr. 03, 2016
Income Statement [Abstract]
Revenues	$ 842,764	$ 728,243	$ 697,376
Cost of revenues	360,479	307,605	275,722
Gross profit	482,285	420,638	421,654
Operating expenses:
Research and development	202,721	165,104	148,507
Selling, general and administrative	168,648	145,193	136,508
Total operating expenses	371,369	310,297	285,015
Operating income	110,916	110,341	136,639
Interest expense	(27,352)	(16,878)	(7,043)
Interest income and other, net	8,608	5,822	4,268
Income before income taxes from continuing operations	92,172	99,285	133,864
Benefit from (provision for) income taxes	(104,308)	9,899	61,435
Net income (loss) from continuing operations	(12,136)	109,184	195,299
Discontinued operations:
Gain from divestiture before income taxes	0	1,385	0
Loss from discontinued operations before income taxes	0	0	(547)
Income tax expense	0	87	15
Net income (loss) from discontinued operations	0	1,298	(562)
Net income (loss)	$ (12,136)	$ 110,482	$ 194,737
Basic net income (loss) per share - continuing operations (in dollars per share)	$ (0.09)	$ 0.82	$ 1.37
Basic net income per share - discontinued operations (in dollars per share)	0.00	0.01	0.00
Basic net income (loss) per share (in dollars per share)	(0.09)	0.83	1.37
Diluted net income (loss) per share - continuing operations (in dollars per share)	(0.09)	0.79	1.32
Diluted net income per share - discontinued operations (in dollars per share)	0.00	0.01	0.00
Diluted net income (loss) per share (in dollars per share)	$ (0.09)	$ 0.80	$ 1.32
Weighted average shares:
Basic (shares)	132,651	133,817	142,783
Diluted (shares)	132,651	137,440	147,652