Customer Financing (Detail)	3 Months Ended			6 Months Ended
	Oct. 28, 2023 USD ($)	Jul. 29, 2023 USD ($)	Oct. 29, 2022 USD ($)	Oct. 28, 2023 USD ($) financingAgreement	Oct. 29, 2022 USD ($)	Apr. 29, 2023 USD ($)
Customer Financing [Line Items]
Maximum credit financed for equipment purchases for any one customer	$ 2,000,000			$ 2,000,000
Number of customer financing contracts | financingAgreement				2
Deferred Purchase Price Receivable Transferred		$ 15,400,000
Financing contracts sold				$ 115,266,000	$ 111,612,000
(Loss) gain on sale of financing contracts	(3,736,000)		$ (3,211,000)	(7,160,000)	(4,646,000)
Proceeds from Receivables sold				141,353,000	163,088,000
Cash and cash equivalents	113,886,000			113,886,000		$ 159,669,000
Current receivables of finance contracts not yet sold	44,757,000			44,757,000		77,646,000
Finance contracts receivable sold and outstanding	546,042,000			$ 546,042,000
Bad debt write-offs, percentage (less than)				1.00%
Unsettled Financing Arrangements
Customer Financing [Line Items]
Cash and cash equivalents	30,621,000			$ 30,621,000		33,072,000
Customer Finance Contracts
Customer Financing [Line Items]
(Loss) gain on sale of financing contracts	(3,953,000)		$ (8,456,000)	$ (12,880,000)	$ (7,468,000)
MUFG
Customer Financing [Line Items]
Percentage of principal amount of financing contracts held as collateral (at least)				15.00%
Capacity under agreement	$ 575,000,000	$ 575,000		$ 575,000,000
Fifth Third Bank
Customer Financing [Line Items]
Percentage of principal amount of financing contracts held as collateral (at least)				15.00%
Capacity under agreement						$ 525,000,000