Intangible Assets and Goodwill - Indefinite-lived Intangibles Excluding Goodwill, Impairment Test (Details) (Trademarks, Interconnect, USD $) In Thousands, unless otherwise specified	12 Months Ended
Apr. 27, 2013 reporting_unit
Trademarks \| Interconnect
Indefinite-lived Intangible Assets [Line Items]
Number of reporting units with indefinite-lived intangible assets (excluding goodwill) where impairment test was performed	1
Impairment of indefinite-lived intangible assets (excluding goodwill)	$ 0
Percentage by which fair value exceeded carrying value	45.00%

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an indefinite-lived intangible asset, other than goodwill, to fair value.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16373-109275

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 46

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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