Note 5. Balance Sheet Details (Detail) (USD $)	12 Months Ended
Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011
Write-off Of Fully Depreciated Assets	$ 35,900,000
Depreciation, Depletion and Amortization	10,809,000	14,898,000	19,414,000
Property, Plant and Equipment [Member]
Depreciation, Depletion and Amortization	$ 6,800,000	$ 8,100,000	$ 9,100,000

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Name:	us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration