Selected Financial Statement Data Property and Equipment (Details) - USD ($) $ in Thousands	Aug. 01, 2020	May 02, 2020
Property, Plant and Equipment [Line Items]
Land	$ 2,183	$ 2,183
Buildings	69,967	68,804
Machinery and equipment	105,188	104,157
Office furniture and equipment	6,174	6,151
Computer software and hardware	53,691	53,441
Equipment held for rental	287	287
Demonstration equipment	8,368	8,473
Transportation equipment	7,783	7,944
Property, Plant and Equipment, Gross	253,641	251,440
Less accumulated depreciation	187,582	183,956
Property and equipment, net	$ 66,059	$ 67,484

Gross amount, as of the balance sheet date, of long-lived, depreciable equipment used for demonstration.

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- Definition

Gross amount, as of the balance sheet date, of long-lived, depreciable equipment held for rental.

+ References

No definition available.

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- Definition

Gross amount, as of the balance sheet date, of long-lived, depreciable equipment used for transportation.

+ References

No definition available.

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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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- Definition

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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- Definition

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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- Definition

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.

+ References

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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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.

+ References

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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.

+ References

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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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