Property, Plant and Equipment: Property, Plant and Equipment (Details) (USD $)	May 31, 2013	May 31, 2012
Property, Plant and Equipment, Gross	$ 6,002,712	$ 5,728,859
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(4,102,151)	(3,361,539)
Property, plant and equipment, net	1,900,561	2,367,320
Computer Equipment
Property, Plant and Equipment, Gross	587,392	553,680
Technology Equipment
Property, Plant and Equipment, Gross	5,048,888	4,895,607
Furniture and Fixtures
Property, Plant and Equipment, Gross	205,308	213,144
Vehicles
Property, Plant and Equipment, Gross	125,871	32,516
Leasehold Improvements
Property, Plant and Equipment, Gross	$ 35,253	$ 33,912