Note 5 - Accrued Expenses (Details) - Major Components Of Accrued Expenses (USD $)	Aug. 31, 2013	Nov. 30, 2012
Major Components Of Accrued Expenses [Abstract]
Salaries, wages, and commissions	$ 914,803	$ 924,123
Accrued warranty expense	520,428	578,864
Other	346,429	457,253
	$ 1,781,660	$ 1,960,240