Income Taxes - Significant Components of Company's Deferred Taxes Consist (Detail) - USD ($) |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Deferred tax assets: | ||
| Net operating loss carryforwards | $ 71,616 | $ 76,486 |
| Amortization of license fees | 13,648 | 7,277 |
| Amortization of in-process R&D | 557 | 742 |
| Stock compensation | 10,682 | 10,899 |
| Accruals and reserves | 5,166 | 4,025 |
| Tax credits | 7,376 | 6,305 |
| Start up costs | 75 | 98 |
| Unrealized loss on investments | 0 | 1,095 |
| Total deferred tax assets | 109,120 | 106,927 |
| Less: valuation allowance | (101,645) | (94,687) |
| Net deferred tax assets | 7,475 | 12,240 |
| Deferred tax liabilities: | ||
| Unrealized gain/loss on investment | (685) | 0 |
| Intangibles | (3,321) | (4,450) |
| Basis in subsidiary | (3,469) | (7,790) |
| Total deferred tax assets, net | $ 0 | $ 0 |
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- Definition Represent deferred tax assets amortization of in process research and development. No definition available.
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- Definition Represent the amortization of up-front fees in deferred tax asset. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from 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 and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. 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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- 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 a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible 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 compensation and benefits costs. 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 reserves and accruals. 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 unrealized losses on trading securities. 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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- Definition Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from the entity's basis in a discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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