Goodwill And Intangibles, Net (Schedule Of Gross Carrying Amount And Amortization Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013		Mar. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 24,019		$ 41,090
Accumulated Amortization	(19,369)		(22,849)
Core Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	1,390	[1]	1,390	[1]
Accumulated Amortization	(1,390)	[1]	(1,390)	[1]
License Agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	440	[1]	440	[1]
Accumulated Amortization	(440)	[1]	(440)	[1]
Existing Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	5,566		17,235
Accumulated Amortization	(3,802)		(7,318)
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	320	[1],[2]	2,758	[1],[2]
Accumulated Amortization	(320)	[1],[2]	(320)	[1],[2]
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount			398	[2]
Accumulated Amortization			(258)	[2]
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount			4,682	[2]
Accumulated Amortization			(1,515)	[2]
Technology Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	16,303		14,187
Accumulated Amortization	$ (13,417)		$ (11,608)

[1] Intangible assets are fully amortized.

[2] Intangible assets existing at March 31, 2012 were fully or partially removed as part of the asset sale discussed in Note 7.