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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.

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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