Income Taxes (Schedule of Deferred Tax Assets) (Details) - USD ($) |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Deferred tax assets: | ||
| Net operating loss carryforwards | $ 60,129,827 | $ 50,117,798 |
| R&D credit carryforwards | 9,465,900 | 8,394,408 |
| Stock compensation | 1,898,394 | 1,849,847 |
| Intangibles | 1,921,934 | 1,931,193 |
| Temporary differences | 801,002 | 910,354 |
| Deferred tax assets before valuation allowance | 74,217,057 | 63,203,600 |
| Valuation allowance | $ (74,217,057) | $ (63,203,600) |
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- Definition Deferred tax assets temporary difference. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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