Property And Equipment (Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 65,334	$ 63,630
Less accumulated depreciation	(48,063)	(46,450)
Property and equipment	17,271	17,180
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	2,243	2,224
Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17,685	17,002
Furniture, Fixtures, And Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 12,538	$ 11,536