Note 11 - Income Taxes (Detail) - Deferred Tax Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for doubtful accounts	$ 53	$ 60	$ 87
Accrued expenses and other reserves	2,197	2,264	2,146
Tax credits, deferred R&D, and other	907	656	899
Net operating loss	25,980	24,931	22,088
Valuation allowance	(29,135)	(27,909)	(25,206)
Net total deferred taxes	$ 2	$ 2	$ 14

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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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 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 and accruals 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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