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Reconciliation of Statutory Federal Income Tax Rate to Actual Effective Tax Rate (Detail)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Federal income tax rate to the actual effective income tax rate for continuing operations    
Federal tax (benefit) rate (34.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate (34.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Increase (decrease) in taxes resulting from:    
State income taxes (5.80%)us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes (5.80%)us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Change in valuation allowance 38.20%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance 39.50%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Permanent differences 1.60%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance 0.30%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance
Minimum tax 2.40%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.60%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective income tax rate, continuing operations 2.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 0.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations