Note 13 - Income Taxes (Detail) - Deferred tax assets and liabilities (USD $)	Nov. 30, 2012	Nov. 30, 2011
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
Property, plant, and equipment	(897,000)	(811,000)
Total non-current deferred tax assets (liabilities)	$ (897,000)	$ (811,000)

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves not separately disclosed.

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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