Goodwill and Acquisition-Related Intangibles (Details 1) (USD $)	12 Months Ended
Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Schedule of expected annual amortization expense for acquisition-related intangibles
2013	$ 8,536,000
2014	7,918,000
2015	7,289,000
2016	6,742,000
2017	4,986,000
Thereafter	861,000
Total	36,332,000
Goodwill and Acquisition-Related Intangibles (Textual) [Abstract]
Amortization of acquisition-related intangibles	$ 7,600,000	$ 1,000,000	$ 2,500,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

-Publisher FASB

-Name Accounting Standards Codification

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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The aggregate estimated amortization expense for succeeding fiscal years for intangible assets subject to amortization.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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The amount of amortization expense expected to be recognized for the remainder of the finite-lived intangible asset useful life after the fifth succeeding fiscal year.

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