Elements of Deferred Income Tax Assets (Liabilities) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets (liabilities)
- Depreciation & amortization	$ (112)	$ 133
- Reserves for doubtful accounts	86	66
- Accrued payroll	0	166
- Inventory reserve	148	137
- NOL	4,000	7,014
Subtotal	4,122	7,516
- Valuation allowance	0	(4,430)
Total	$ 4,122	$ 3,086

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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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 the allowance for doubtful accounts.

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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 assets for which it is more likely than not that a tax benefit will not be realized.

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