Property, Plant and Equipment and Assets Held for Sale (Property, Plant and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 25, 2012	Aug. 27, 2011
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 150,031	$ 149,210
Less accumulated depreciation	(130,053)	(126,621)
Total property, plant and equipment, net	19,978	22,589
Land [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	757	767
Building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	49,641	49,226
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	90,775	90,380
Transportation [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 8,858	$ 8,837

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 of long-lived 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, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

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