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Note 8 - Property, Plant and Equipment: Property, Plant and Equipment (Details) (USD $)	Nov. 30, 2014	May 31, 2014
Property, Plant and Equipment, Gross	$ 5,840,261us-gaap_PropertyPlantAndEquipmentGross	$ 5,623,158us-gaap_PropertyPlantAndEquipmentGross
Less: Accumulated depreciation	(4,455,624)	(4,171,264)
Property, Plant and Equipment, Net, Total	1,384,637us-gaap_PropertyPlantAndEquipmentNet	1,451,894us-gaap_PropertyPlantAndEquipmentNet
Computer Equipment
Property, Plant and Equipment, Gross	103,622	102,023
Technology Equipment
Property, Plant and Equipment, Gross	5,459,342	5,297,796
Furniture and Fixtures
Property, Plant and Equipment, Gross	114,923	61,887
Vehicles
Property, Plant and Equipment, Gross	126,907	126,133
Leasehold Improvements
Property, Plant and Equipment, Gross	$ 35,467	$ 35,319