Discontinued Operations (Divestiture) (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended			9 Months Ended
	May 30, 2014	Dec. 28, 2014	Jun. 29, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013
Long Lived Assets Held-for-sale [Line Items]
Cash proceeds from sale					$ 15,300	$ 96,299
High-Speed Converter Business
Long Lived Assets Held-for-sale [Line Items]
Cash proceeds from sale	18,000		18,000
Less book value of assets sold and direct costs related to the sale:
Intangible assets			(990)
Transaction and other costs			(170)
Gain on divestiture		$ 0	$ 16,840	$ 0	$ 16,840	$ 0