Note 5 - Accrued Expenses (Details) - Major Components of Accrued Expenses (USD $)	May 31, 2014	Nov. 30, 2013
Major Components of Accrued Expenses [Abstract]
Salaries, wages, and commissions	$ 747,568	$ 836,200
Accrued warranty expense	229,400	220,719
Other	607,917	661,556
	$ 1,584,885	$ 1,718,475