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Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Statement of Comprehensive Income [Abstract] |  |
Net income | $ 5,358 us-gaap_NetIncomeLoss | $ 3,417 us-gaap_NetIncomeLoss
Change in fair value of derivative instruments: |  |
Change in fair value of derivative instruments for the period | (329)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax | (225)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
Income tax effect | 115 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax | 79 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax
Changes from derivative instruments | (214)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax | (146)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
Change in securities available-for-sale: |  |
Unrealized appreciation for the period on available-for-sale securities | 1,962 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax | 4,426 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax
Unrealized appreciation for the period on held-to-maturity | (114)us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesBeforeTax |
Reclassification adjustment for securities gains realized in income | (124)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
Income tax effect | (604)us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax | (1,550)us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
Unrealized gains on available-for-sale securities | 1,120 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax | 2,876 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
Other Comprehensive Income, Net of Tax | 906 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent | 2,730 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Comprehensive Income | $ 6,264 us-gaap_ComprehensiveIncomeNetOfTax | $ 6,147 us-gaap_ComprehensiveIncomeNetOfTax

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