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Income Taxes - Schedule of Significant Components of Net Deferred Tax Assets (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|
| Capitalized start-up costs | $ 209 | $ 238 |
| Net operating loss carryforwards | 44,769 | 37,889 |
| Research and development credits | 3,513 | 3,370 |
| Deferred stock compensation | 2,115 | 1,635 |
| Other (accruals, reserves, depreciation) | 958 | 592 |
| Total deferred tax assets | 51,564 | 43,724 |
| Less: Valuation allowance | (51,564) | (43,724) |
| Net deferred tax assets | $ 0 | $ 0 |
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- Definition
Deferred Tax Assets Capitalized Start Up Costs 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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- Definition
Amount after 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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- 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 temporary differences not separately disclosed. 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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