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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 27, 2019 | Apr. 28, 2018
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 6 years | 7 years 9 months
Gross Carrying Amount | $ 9,852 | $ 6,646
Accumulated Amortization | 4,946 | 2,964
Definite-lived, Net Value | 4,906 | 3,682
Intangibles, net | $ 4,906 | $ 3,682
Trademarks |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 19 years 6 months | 20 years
Gross Carrying Amount | $ 679 | $ 709
Accumulated Amortization | 148 | 118
Definite-lived, Net Value | $ 531 | $ 591
Software |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 3 years | 3 years
Gross Carrying Amount | $ 6,330 | $ 2,978
Accumulated Amortization | 3,807 | 2,109
Definite-lived, Net Value | $ 2,523 | $ 869
Customer Relationships |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 10 years | 10 years
Gross Carrying Amount | $ 2,720 | $ 2,859
Accumulated Amortization | 888 | 637
Definite-lived, Net Value | $ 1,832 | $ 2,222
Other |  |
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Life (in years) | 1 year 5 months | 1 year
Gross Carrying Amount | $ 123 | $ 100
Accumulated Amortization | 103 | 100
Definite-lived, Net Value | $ 20 | $ 0

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