Income Taxes (Details 2) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Significant components of the Company's deferred tax assets
Net federal and state operating loss carryforwards	$ 24,689,000	$ 23,611,000
Net foreign operating loss carryforwards	380,000	484,000
Accrued expenses and reserves		10,000
Tax credits	1,194,000	1,202,000
Other	295,000	348,000
Total deferred tax assets	26,558,000	25,655,000
Valuation allowance	(26,558,000)	(25,655,000)
Increase in valuation allowance	$ 903,000

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

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

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- Definition

The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance.

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- Definition

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

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

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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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