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Revenue Recognition Contract with Customer, Asset and Liability (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Apr. 27, 2019 USD ($) contract | Apr. 28, 2018 USD ($) contract
Revenue from Contract with Customer [Abstract] |  |
Contract assets | $ 33,704 | $ 30,968
Contract liabilities | 47,178 | 39,379
Long-term contract liabilities | 10,053 | $ 7,475
Dollar Change [Abstract] |  |
Contract assets | 2,736 |
Contract liabilities - current | 7,799 |
Contract liabilities - noncurrent | $ 2,578 |
Change in Contract with Customer, Asset and Liability, Percentage [Abstract] |  |
Contract assets percent change | 8.83% |
Contract liabilities, current, percent change | 19.80% |
Contract liabilities, noncurrent, percent change | 34.49% |
Number of Loss on Contracts | contract | 6 | 2
Provision for Loss on Contracts | $ 2,353 | $ 30
Revenue recognized related to contract liability | $ 35,676 |

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- Definition Number of Loss on Contracts + References No definition available. + Details
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044 + Details
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 + Details
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