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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 29, 2017 | Apr. 30, 2016
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 9 years 3 months 7 days | 8 years 10 months 6 days
Gross Carrying Amount | $ 7,722 | $ 8,274
Accumulated Amortization | 2,187 | 553
Finite-Lived Intangible Assets, Accumulated Impairment Loss | 830 | 0
Definite-lived, Net Value | 4,705 | 7,721
Intangibles, net | $ 4,705 | $ 7,721
Trademarks |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 20 years | 18 years 3 months 15 days
Gross Carrying Amount | $ 1,604 | $ 1,676
Accumulated Amortization | 429 | 194
Finite-Lived Intangible Assets, Accumulated Impairment Loss | 604 | 0
Definite-lived, Net Value | $ 571 | $ 1,482
Computer Software, Intangible Asset [Member] |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 3 years | 3 years
Gross Carrying Amount | $ 2,814 | $ 3,046
Accumulated Amortization | 1,055 | 46
Finite-Lived Intangible Assets, Accumulated Impairment Loss | 0 | 0
Definite-lived, Net Value | $ 1,759 | $ 3,000
Customer Relationships [Member] |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 9 years 8 months 12 days | 9 years 8 months 1 day
Gross Carrying Amount | $ 3,209 | $ 3,449
Accumulated Amortization | 608 | 300
Finite-Lived Intangible Assets, Accumulated Impairment Loss | 226 | 0
Definite-lived, Net Value | $ 2,375 | $ 3,149
Other |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 1 year | 1 year
Gross Carrying Amount | $ 95 | $ 103
Accumulated Amortization | 95 | 13
Finite-Lived Intangible Assets, Accumulated Impairment Loss | 0 | 0
Definite-lived, Net Value | $ 0 | $ 90

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- Definition [Line Items] for Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Table] + References No definition available. + 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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- 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=66006027&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=66006027&loc=d3e16323-109275 + Details
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