Discontinued Operations (Details) (USD $)	3 Months Ended								12 Months Ended					0 Months Ended
	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2012	Feb. 29, 2012	Nov. 30, 2011	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2013 Discontinued Operations, Australia [Member]	Aug. 31, 2011 Discontinued Operations, Australia [Member]	Sep. 03, 2013 Discontinued Operations, Australia [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses														$ 3,000,000
Net sales									30,009,000	25,482,000	33,394,000
Loss from discontinued operations, net of tax	1,571,000	4,821,000	282,000	(3,000)	342,000	320,000	168,000	30,000	6,671,000	860,000	8,690,000
Impairments on assets held-for-sale												4,000,000
Restructuring expense									$ 10,500,000	$ 9,256,000	$ 4,547,000		$ 3,600,000