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INCOME TAXES (Details 4) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| INCOME TAXES | ||
| Increase (decrease) in valuation allowance | $ 62,600,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount | $ 10,800,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount |
| Tax deductions related to exercise of stock options | 2,500,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions | 2,500,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions |
| Loss carryforward tax assets not included in deferred assets | 1,700,000rigl_DeferredTaxAssetsOperatingLossCarryforwardsNotIncluded | 1,700,000rigl_DeferredTaxAssetsOperatingLossCarryforwardsNotIncluded |
| Increase in equity if unrecorded deferred tax assets are ultimately realized | 1,700,000rigl_DeferredTaxAssetsOperatingLossCarryforwardsNotIncludedEffectOnEquityIfRealized | |
| Gross unrecognized tax benefits | ||
| Balance at the beginning of the year | 5,001,000us-gaap_UnrecognizedTaxBenefits | 4,300,000us-gaap_UnrecognizedTaxBenefits |
| Increase related to prior year tax positions | 249,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | |
| Increase related to current year tax positions | 373,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 452,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions |
| Balance at the end of the year | 5,374,000us-gaap_UnrecognizedTaxBenefits | 5,001,000us-gaap_UnrecognizedTaxBenefits |
| Unrecognized tax benefits, if recognized, would result in adjustments to other tax accounts, primarily deferred taxes | 4,300,000rigl_UnrecognizedTaxBenefitsThatWouldImpactOtherTaxAccountsIncludingDeferredTaxes | 3,900,000rigl_UnrecognizedTaxBenefitsThatWouldImpactOtherTaxAccountsIncludingDeferredTaxes |
| Income tax benefit | $ 0us-gaap_IncomeTaxExpenseBenefit | |
| X | ||||||||||
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- Definition
Loss carryforward tax assets not included in deferred tax assets, as a result of certain realization requirements, that arose directly from (or the use of which was postponed by) tax deductions related to stock-based compensation expense in excess of compensation expense recognized for financial reporting. No definition available.
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- Definition
The effect, on equity, if loss carryforward tax assets not included in deferred tax assets are ultimately realized. No definition available.
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- Definition
Represents the total amount of unrecognized tax benefits that, if recognized, would affect the amount of other tax accounts including deferred taxes. No definition available.
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- Definition
Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount 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
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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