Property And Equipment (Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2012	Aug. 31, 2011
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 66,590	$ 65,207
Less accumulated depreciation	(48,094)	(46,064)
Property and equipment	18,496	19,143
Land And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,312	1,312
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	31,556	31,556
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,295	2,184
Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,792	18,747
Furniture, Fixtures, And Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 11,635	$ 11,408

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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