Annual report pursuant to Section 13 and 15(d)

Income Taxes (Detail 1)

v2.4.1.9
Income Taxes (Detail 1)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Percentage of pre-tax income:      
U.S. federal statutory income tax rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State taxes, net of federal benefit 5.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 4.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 4.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Credits 6.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits 4.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits 1.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits
Non-deductible items (1.00%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense (2.00%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense (2.00%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense
Other 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments [1] (1.00%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments [1] (5.00%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments [1]
Change in valuation allowance (45.00%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (40.00%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (33.00%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Effective income tax rate 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations
[1] Other consists of: in 2014 (0%), in 2013 state NOL true-up (1%), and in 2012 state rate change (5%).