Note 7 - Accrued Expenses (Details) - Major Components Of Accrued Expenses (USD $)	Nov. 30, 2013	Nov. 30, 2012
Major Components Of Accrued Expenses [Abstract]
Salaries, wages, and commissions	$ 836,200	$ 924,123
Accrued warranty expense	220,719	578,864
Other	661,556	457,253
	$ 1,718,475	$ 1,960,240