Note 4 - Inventory (Details) - Major Classes Of Inventory (USD $)	May 31, 2013	Nov. 30, 2012
Major Classes Of Inventory [Abstract]
Raw materials	$ 10,055,893	$ 8,466,060
Work in process	447,628	632,969
Finished goods	6,958,432	7,694,528
	17,461,953	16,793,557
Less: Reserves	(2,642,382)	(2,466,075)
	$ 14,819,571	$ 14,327,482