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INCOME TAXES (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Deferred tax assets | |||
| Net operating loss carryforwards | $ 236,737 | $ 208,772 | |
| Research and development credits | 28,869 | 23,118 | |
| Capitalized research and development expenses | 499 | 19,813 | |
| Deferred compensation | 24,538 | 27,420 | |
| Other, net | 3,466 | 4,145 | |
| Total deferred tax assets | 294,109 | 283,268 | |
| Valuation allowance | $ (294,109) | $ (283,268) | |
| Reconciliation of the statutory federal income tax rate to the effective tax rate | |||
| Federal statutory tax rate (as a percent) | (34.00%) | (34.00%) | (34.00%) |
| Valuation allowance (as a percent) | 37.90% | 47.50% | 33.60% |
| True up of prior year net operating loss (as a percent) | 0.00% | (11.40%) | 0.00% |
| Other, net (as a percent) | (3.90%) | (2.10%) | 0.40% |
| Effective tax rate (as a percent) | 0.00% | 0.00% | 0.00% |
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from capitalized research and development costs. No definition available.
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- Definition
Represents the portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to the true up of prior year net operating loss. No definition available.
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- Details
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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 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 employee 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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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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