Acquisitions (Finite-Lived And Indefinite-Lived Intangible Assets Acquired In Business Acquisition) (Details) (CLC [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2013
Business Acquisition [Line Items]
Fair Value of Identifiable Asset	$ 7,200
Total intangible assets	13,700
Weighted Average Useful Life in Years	8 years
Patents [Member]
Business Acquisition [Line Items]
Fair Value of Identifiable Asset	4,600
Weighted Average Useful Life in Years	10 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Fair Value of Identifiable Asset	1,700
Weighted Average Useful Life in Years	5 years
Non-compete Agreements [Member]
Business Acquisition [Line Items]
Fair Value of Identifiable Asset	500
Weighted Average Useful Life in Years	5 years
Other Intangibles [Member]
Business Acquisition [Line Items]
Fair Value of Identifiable Asset	400
Weighted Average Useful Life in Years	1 year 3 months 18 days
Tradenames [Member]
Business Acquisition [Line Items]
Fair Value of Identifiable Asset	$ 6,500