Note 13 - Income Taxes (Tables)

12 Months Ended

Nov. 30, 2012

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	November 30
		2012			2011
Current expense		$	1,364,661			$	201,632
Deferred expense (credit)			(41,721	)			130,407
		$	1,322,940			$	332,039

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	November 30
	2012		2011
Statutory federal income tax rate		34.0%		34.0%
R & D tax credits		(2.0)		(4.8)
PriorYear adjustments		(1.0)		(6.2)
Other		2.2		(2.0)
		33.2%		21.0%	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	November 30
	2012			2011
Current deferred tax assets (liabilities):
Accrued expenses	$	254,000		$	55,000
Inventory capitalization		8,000			52,000
Asset reserves		800,000			826,000
Total current deferred tax assets	$	1,062,000		$	933,000
Non-current deferred tax assets (liabilities):
Property, plant, and equipment	$	(897,000	)	$	(811,000	)
Total non-current deferred tax assets (liabilities)	$	(897,000	)	$	(811,000	)