PROPERTY AND EQUIPMENT, NET Disposals (Details) (USD $)	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2011 Sale of Property in Panama [Member]	Mar. 23, 2011 Sale of Property in Panama [Member] sqft	Apr. 09, 2010 Sale of Property in Panama [Member]	Aug. 31, 2012 Disposal of Assets No Longer in Use [Member]	Aug. 31, 2011 Disposal of Assets No Longer in Use [Member]
Significant Acquisitions and Disposals [Line Items]
Other Costs	$ 0	$ (188,000)	$ (188,000)			$ 0	$ 0
Proceeds from disposal	138,000	7,588,000	7,406,000			138,000	182,000
Gain (Loss) recognized	(312,000)	763,000	1,249,000			(312,000)	(486,000)
Significant Acquisitions and Disposals, Property, Plant and Equipment, Gross	4,700,000	17,965,000	8,717,000			4,700,000	9,248,000
Significant Acquisitions and Disposals, Accumulated Depreciation, Impairement, Depletion and Amortization, Property, Plant and Equipment	4,250,000	11,328,000	2,748,000			4,250,000	8,580,000
Area of land sold				28,322
Sales price of property				$ 2,100,000	$ 5,300,000