Discontinued Operations (Results of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Jun. 29, 2014	Jan. 03, 2016	Dec. 28, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss from discontinued operations	$ 0	$ (14,483)		$ (562)	$ (19,555)
High-Speed Converter Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		701		176	3,039
Cost of revenues		(441)		(477)	(1,459)
Long-lived assets impairment		0		0	(8,471)
Restructuring costs		(11,930)		0	(18,705)
Operating expenses		(2,868)		(246)	(10,842)
Gain on divestiture		0	$ 16,840	0	16,840
Income tax provision (benefit)		(55)		15	(43)
Net loss from discontinued operations		$ (14,483)		$ (562)	$ (19,555)