Note 8 - Product Warranty (Tables)

12 Months Ended

Nov. 30, 2013

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	November 30, 2013			November 30, 2012
Balance, beginning	$	578,864		$	201,630
Settlements / adjustments		(605,281	)		(436,096	)
Warranties issued		247,136			813,330
Balance, ending	$	220,719		$	578,864