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Receivables (Details) - USD ($) $ in Thousands	9 Months Ended
	Feb. 01, 2020	Apr. 27, 2019
Receivables
Allowance for doubtful accounts	$ 2,466	$ 2,208
Retainage on construction-type contracts, expected to be collected in one year	265	440
Financing Receivable
Receivables
Long-term contracts and lease receivables, present value	6,858	3,514
Long-term contracts and lease receivables, face amount	$ 7,990	$ 3,271
Financing Receivable | Minimum
Receivables
Contract and lease receivables annual interest rates	5.00%
Financing Receivable | Maximum
Receivables
Contract and lease receivables annual interest rates	9.00%

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- Definition

Contract and Leases Receivable, Interest Rate

+ References

No definition available.

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
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Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract to be collected in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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