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Long-Lived Assets - Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Apr. 26, 2014 | Apr. 27, 2013
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 13 years |
Gross Carrying Amount | $ 4,146 | $ 2,282
Accumulated Amortization | 1,867 | 1,502
Definite-lived, Net Value | 2,279 | 780
Indefinite-lived assets | 401 | 401
Definite-lived and Indefinite lived, Gross Carrying Amount | 4,547 | 2,683
Intangibles, net | 2,680 | 1,181
Patents |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 10 years |
Gross Carrying Amount | 2,282 | 2,282
Accumulated Amortization | 1,730 | 1,502
Definite-lived, Net Value | 552 | 780
Trademarks |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 20 years |
Gross Carrying Amount | 1,216 | 0
Accumulated Amortization | 59 | 0
Definite-lived, Net Value | 1,157 | 0
Other |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 9 years |
Gross Carrying Amount | 648 | 0
Accumulated Amortization | 78 | 0
Definite-lived, Net Value | $ 570 | $ 0

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- Definition Finite-Lived Intangible Assets and Indefinite-Lived Intangible Assets, Gross + References No definition available. + Details
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- Definition Finite-Lived Intangible Assets and Indefinite-Lived Intangible Assets, Net + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: 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=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: 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=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: 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=26713463&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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