Goodwill and Acquisition-Related Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Gross and net amounts of goodwill and of acquisition-related intangibles
Goodwill	$ 340,718	$ 162,421
Total acquisition-related intangibles, gross	210,976	129,446
Less accumulated amortization	(130,253)	(125,323)
Total	80,723	4,123
In process research and development	52,710	0
Core Technology [Member]
Gross and net amounts of goodwill and of acquisition-related intangibles
Total acquisition-related intangibles, gross	107,250	82,480
Less accumulated amortization	(82,611)	(78,562)
Total	$ 24,639	3,918
Weighted-Average Amortization Life	4 years 4 months
Other Intangibles [Member]
Gross and net amounts of goodwill and of acquisition-related intangibles
Total acquisition-related intangibles, gross	$ 51,016	46,966
Less accumulated amortization	(47,642)	(46,761)
Total	$ 3,374	$ 205
Weighted-Average Amortization Life	2 years 6 months

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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