Property and Equipment, Net (Detail) (USD $) In Thousands	Jul. 30, 2011	Jan. 29, 2011
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 469,665	$ 435,900
Computer software	77,587	74,966
Furniture and fixtures	23,818	23,498
Leasehold improvements	35,044	34,142
Buildings	144,596	144,596
Building improvements	41,991	41,200
Land	69,246	69,246
Construction in progress	6,217	8,469
Property, Plant and Equipment, Gross, Total	868,164	832,017
Less: Accumulated depreciation and amortization	(504,400)	(473,577)
Property and equipment, net	$ 363,764	$ 358,440

Carrying amount as of the balance sheet date of buildings.

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The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount, at the balance sheet date, of long-lived assets under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

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Gross amount, at the balance sheet date, of long-lived, depreciable assets commonly used in offices and stores. Examples include desks, chairs, and store fixtures.

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Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.

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Gross amount, at the balance sheet date, of long-lived, depreciable assets that are an addition or improvement to assets held under lease arrangement.

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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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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Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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This element represents capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy.

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