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Income Taxes (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income Tax Disclosure [Abstract]    
Income tax expense (benefit) $ 1,653,000us-gaap_IncomeTaxExpenseBenefit $ 964,000us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate 34.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 31.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations