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Income Taxes (Tax Rate Reconciliation) (Details)
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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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Dec. 31, 2012
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| Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] | |||
| Federal statutory rate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |
| State taxes | 1.40%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 5.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 5.50%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes |
| Stock-based compensation | 1.30%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost | 9.10%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost | 22.90%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost |
| Foreign source income | 3.90%us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings | 1.90%us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings | (3.50%)us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings |
| Change in valuation allowance | (270.50%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | (28.40%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | (47.90%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance |
| Incremental federal rate benefit previously not recognized | (7.00%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate |
| Federal and state research and development credit | (11.30%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch |
| Other | (3.90%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 2.80%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 2.90%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments |
| Provision for income taxes | (251.10%)us-gaap_EffectiveIncomeTaxRateContinuingOperations | 24.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 13.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations |
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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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| X | ||||||||||
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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 income tax rates. 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 equity-based compensation costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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- 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 the repatriation of foreign earnings. 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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). 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 research tax credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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