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.

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

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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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Goodwill and Acquisition-Related Intangibles (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Schedule of expected annual amortization expense for acquisition-related intangibles
2013 (remaining six months)			$ 5,041
2014			9,542
2015			8,846
2016			8,244
2017			6,473
Thereafter			2,950
Total			41,096
Goodwill and Acquisition-Related Intangibles (Textual) [Abstract]
Amortization of acquisition-related intangibles	$ 2,319	$ 1,982	$ 4,467	$ 3,605