Note 5 - Accrued Expenses (Details) - Major Components of Accrued Expenses (USD $)	Aug. 31, 2014	Nov. 30, 2013
Major Components of Accrued Expenses [Abstract]
Salaries, wages, and commissions	$ 591,087	$ 836,200
Accrued warranty expense	285,096	220,719
Other	632,396	661,556
	$ 1,508,579	$ 1,718,475