Summary of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Apr. 27, 2025	Apr. 28, 2024
Property, Plant and Equipment [Line Items]
land and improvements	$ 596	$ 947
buildings and improvements	25,286	30,774
Leasehold improvements	2,044	2,388
machinery and equipment	50,361	67,703
data processing equipment and software	8,500	8,597
office furniture and equipment	1,250	1,456
capital projects in progress	549	1,596
property, plant, and equipment, gross	88,586	113,461
accumulated depreciation	(63,750)	(80,279)
property, plant, and equipment, net	$ 24,836	$ 33,182
Land and Land Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	0 years
Land and Land Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	10 years
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	7 years
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	40 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
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Machinery and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	3 years
Machinery and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	15 years
Data Processing Equipment and Software [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	3 years
Data Processing Equipment and Software [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	7 years
Office Furniture and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	3 years
Office Furniture and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
depreciable lives	10 years

Amount of equipment, building, and building and improvements that have not been placed into service.

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- Definition

Capitalized computer software and hardware.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Indicates description of term of useful life for property, plant, and equipment when not stated as numeric value.

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