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Income Taxes (Details Textual) (USD $)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Income Taxes (Textual) [Abstract] | |||
| Valuation Allowance | $ 19,195,192 | $ 14,315,214 | |
| Net change in valuation allowance related to deferred tax assets | 4,879,978 | 2,545,834 | |
| Change in ownership | 50.00% | ||
| Annual amount of pre-change net operating losses | 172,000 | ||
| Additional unrecognized tax benefits | 329,676 | 59,967 | |
| Tax positions | 880,638 | 550,962 | 490,995 |
| Interest and penalties | 0 | 0 | |
| Income tax benefit computed at statutory federal rate | 34.00% | 34.00% | |
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Research and Development Tax Credit [Member]
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| Income Tax Disclosure [Line Items] | |||
| Federal research and development tax credit carryforwards | 881,000 | ||
| Federal tax credit carryforward | 2023 | ||
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Federal and State Tax [Member]
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| Income Tax Disclosure [Line Items] | |||
| Federal and state tax net operating loss carryforwards | $ 48,822,000 | ||
| Federal and state tax loss carryforward expiration date | 2033 | ||
| X | ||||||||||
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- Definition
Foreign and state operating tax loss carry forwards expiration in years. No definition available.
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- Details
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- Details
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- Definition
Net operating loss carryforward limitation on use percentage ownership change minimum. No definition available.
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- Definition
Net operating loss carryforwards pre change annual limitation. No definition available.
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- Definition
Tax credit carry forward expiration year. No definition available.
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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