Note 4 - Inventory (Details) - Major Classes of Inventory (USD $)	May 31, 2014	Nov. 30, 2013
Major Classes of Inventory [Abstract]
Raw materials	$ 10,471,139	$ 10,322,014
Work in process	478,117	511,016
Finished goods	8,346,187	7,305,301
	19,295,443	18,138,331
Less: Reserves	(3,427,158)	(3,215,806)
	$ 15,868,285	$ 14,922,525