Equity Compensation (Summary Of Effect Of Stock-Based Compensation On Cost Of Goods Sold) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Mar. 30, 2013	Mar. 31, 2012	Mar. 26, 2011
Effect on pre-tax income	$ 21,495	$ 12,178	$ 8,141
Income Tax Benefit	(106)
Total share based compensation expense (net of taxes)	21,389	12,178	8,141
Share based compensation effects on basic earnings (loss) per share	$ 0.33	$ 0.19	$ 0.12
Share based compensation effects on diluted earnings (loss) per share	$ 0.32	$ 0.18	$ 0.11
Share based compensation effects on operating activities cash flow	21,389	12,178	8,141
Share based compensation effects on financing activities cash flow	106
Cost of Sales [Member]
Effect on pre-tax income	751	398	243
Research and Development [Member]
Effect on pre-tax income	10,549	5,590	2,641
Selling, General and Administrative [Member]
Effect on pre-tax income	$ 10,195	$ 6,190	$ 5,257

Share Based Compensation Effects On Basic Earnings (Loss) Per Share

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- Definition

Share Based Compensation Effects On Diluted Earnings (Loss) Per Share

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- Definition

Share Based Compensation Effects On Financing Activities Cash Flow

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- Definition

The net effect of share based compensation expense on the operating section of the cash flow statement

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

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-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.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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No definition available.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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