Commitments and Contingencies (Narrative) (Details) (USD $)	12 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013	Dec. 22, 2011
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Rent expense	$ 4,000,000	$ 2,800,000	$ 3,200,000
Sublease rental income	100,000	100,000	100,000
Tucson, Arizona Facility [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Square footage of Tucson facilities	28,000
Capacity Investment and Loading Agreement with STATS ChipPAC Ltd [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Non-cancelable purchase commitments				10,000,000
Purchase commitment, rebate amount	10,000,000
Foundry Commitments [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Non-cancelable purchase commitments	98,200,000
Assembly Purchase Order Commitments [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Non-cancelable purchase commitments	5,500,000
Outside Test Services Commitments [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Non-cancelable purchase commitments	10,200,000
Long-term Other Purchase Obligation [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Non-cancelable purchase commitments	$ 46,800,000