Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v2.4.1.9
Income Taxes (Details)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Percent of pre-tax income:    
U.S. federal statutory income tax rate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State taxes, net of federal benefit 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Permanent items (3.10%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent (1.40%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent
Research and development credit 0.90%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch 0.40%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
Change in valuation allowance (31.90%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (33.00%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Effective income tax rate 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations