Note 1 - Nature of Business and Basis of Presentation (Details) (USD $)	3 Months Ended		12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	May 31, 2013
Note 1 - Nature of Business and Basis of Presentation (Details) [Line Items]
Property, Plant and Equipment, Useful Life	10 years		5 years
Net Income (Loss) Attributable to Parent (in Dollars)	$ (7,760,000)	$ (10,635,000)
Due to Changes in Estimates [Member] | Annual [Member]
Note 1 - Nature of Business and Basis of Presentation (Details) [Line Items]
Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment, Period Increase (Decrease) (in Dollars)	(6,300,000)
Net Income (Loss) Attributable to Parent (in Dollars)	3,900,000
Due to Changes in Estimates [Member]
Note 1 - Nature of Business and Basis of Presentation (Details) [Line Items]
Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment, Period Increase (Decrease) (in Dollars)	(1,600,000)
Net Income (Loss) Attributable to Parent (in Dollars)	$ (1,000,000)