Discontinued Operations (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	May. 30, 2014	Dec. 28, 2014	Jun. 29, 2014	Jan. 03, 2016	Dec. 28, 2014	Apr. 27, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestitures				$ 0	$ 15,300
High-Speed Converter Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestitures	$ 18,000		$ 18,000
Cash held in escrow related to discontinued operations	2,700
Gain on divestiture		$ 0	16,840	0	$ 16,840
Long-lived assets held for sale	8,500
Fixed assets held for sale	2,900
Intangible assets held for sale	$ 5,600
Impairment charge			$ 8,500
Other Assets | High-Speed Converter Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestitures				$ 1,500
Consideration in sale of business						$ 1,500