Receivables Securitization Program (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Oct. 26, 2019	Oct. 27, 2018	Oct. 26, 2019	Oct. 27, 2018	Apr. 27, 2019	Jul. 24, 2018
Transfers and Servicing [Abstract]
Eligible receivables, maximum available under Purchase Agreement						$ 175,000
Eligible Receivables, amount utilized under Purchase Agreement	$ 174,000		$ 174,000
DPP receivable	75,561		75,561		$ 57,238
Loss on sale of receivables	$ 2,067	$ 2,192	$ 3,545	$ 2,871

Accounts Receivable Securitization, Eligible Receivables, Amount Utilized Under Purchase Agreement

No definition available.

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- Definition

Accounts Receivable Securitization, Eligible Receivables, Maximum Available Under Purchase Agreement

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

The amount owed to the reporting entity by counterparties in securitized loan transactions.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reflects, by transferred financial asset type, the amount of sales proceeds in excess of or deficient from the sum of the carrying amounts of transferred financial assets plus transaction costs, including those transactions in which the seller/transferor has continuing involvement with the financial assets that have been transferred.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 10
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=116634877&loc=d3e96813-111708

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719

+ Details

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- References

No definition available.

+ Details

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