Purchased Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Apr. 03, 2011
Purchased intangible assets
Gross Carrying Value	$ 12,623	$ 49,094
Accumulated Amortization	7,346	36,400
Net Carrying Value	5,277	12,694
Acquired Core or Developed Technology [Member]
Purchased intangible assets
Gross Carrying Value	8,900	45,700
Accumulated Amortization	5,750	34,479
Net Carrying Value	3,150	11,221
Acquired Other [Member]
Purchased intangible assets
Gross Carrying Value	1,010	1,010
Accumulated Amortization	589	387
Net Carrying Value	421	623
Acquisition Related Intangibles [Member]
Purchased intangible assets
Gross Carrying Value	9,910	46,710
Accumulated Amortization	6,339	34,866
Net Carrying Value	3,571	11,844
Other Purchased Technology Related [Member]
Purchased intangible assets
Gross Carrying Value	2,713	2,384
Accumulated Amortization	1,007	1,534
Net Carrying Value	$ 1,706	$ 850

Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

Reference 1: 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: 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=6905858&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant