Discontinued Operations (Results of HSC Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 03, 2016	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Apr. 03, 2016	Mar. 29, 2015	Mar. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Provision									$ 11,632	$ 19,383	$ 5,538
Net loss from discontinued operations	$ 0	$ 0	$ 0	$ (562)	$ (1,117)	$ (14,483)	$ (9,804)	$ 4,732	(562)	(20,672)	(22,949)
High-Speed Converter Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues									176	3,803	3,466
Cost of revenue									477	1,939	2,935
Goodwill and long-lived assets impairment									0	8,471	4,797
Provision						$ 11,900			0	18,305	0
Operating expenses									246	12,325	18,622
Gain on divestiture								$ 16,800	0	16,840	0
Other income									0	0	(50)
Income tax provision (benefit)									15	275	11
Net loss from discontinued operations									$ (562)	$ (20,672)	$ (22,949)