Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 26, 2011	Mar. 30, 2013 Tucson, Arizona Facility [Member] sqft	Mar. 30, 2013 Capacity Investment And Loading Agreement With STATS ChipPAC Ltd [Member]	Jan. 24, 2012 Capacity Investment And Loading Agreement With STATS ChipPAC Ltd [Member]	Dec. 22, 2011 Capacity Investment And Loading Agreement With STATS ChipPAC Ltd [Member]	Mar. 30, 2013 Foundry Commitments [Member]	Mar. 30, 2013 Assembly Purchase Order Commitments [Member]	Mar. 30, 2013 Outside Test Services Commitments [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Square footage of Tucson facilities				28,000
Rent expense	$ 3.2	$ 4.7	$ 4.6
Sublease rental income	0.1	0.4	1.1
Non-cancelable purchase commitments							10.0	31.0	2.3	1.1
Purchase commitment, initial payment						5
Purchase commitment, remaining amount					5
Purchase commitment, rebate amount					10
Purchase commitment, expected rebate to receive					10
Purchase obligation, rebate utilized					$ 4.3