12. INCOME TAXES (Detail) - Schedule of Deferred Tax Assets and Liabilities (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accrued vacation and warranty	$ 304,000	$ 208,000	$ 219,000
Stock compensation additional paid in capital	218,000	160,000	163,000
Accounts receivable and inventory allowances	125,000	113,000	95,000
Intangibles	19,000	0	0
Gross deferred tax assets	666,000	481,000	477,000
Gross deferred tax liability – depreciation	(39,000)	(69,000)	(99,000)
Net deferred tax assets	$ 627,000	$ 412,000	$ 378,000

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

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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- Definition

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

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