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Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income before provision for income tax expense									$ 11,696us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	$ 7,396us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	$ 3,368us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Tax at statutory federal income tax rate									3,977us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2,515us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1,145us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Tax-exempt income									(348)us-gaap_IncomeTaxReconciliationTaxExemptIncome	(353)us-gaap_IncomeTaxReconciliationTaxExemptIncome	(380)us-gaap_IncomeTaxReconciliationTaxExemptIncome
State income tax, net of federal tax benefit									385us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	233us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	61us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Release of prior year over accrual									0us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes	0us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes	(371)us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes
Other, net									28us-gaap_IncomeTaxReconciliationOtherAdjustments	27us-gaap_IncomeTaxReconciliationOtherAdjustments	91us-gaap_IncomeTaxReconciliationOtherAdjustments
Total income tax expense	$ 1,074us-gaap_IncomeTaxExpenseBenefit	$ 802us-gaap_IncomeTaxExpenseBenefit	$ 1,121us-gaap_IncomeTaxExpenseBenefit	$ 1,045us-gaap_IncomeTaxExpenseBenefit	$ 903us-gaap_IncomeTaxExpenseBenefit	$ 771us-gaap_IncomeTaxExpenseBenefit	$ 810us-gaap_IncomeTaxExpenseBenefit	$ (62)us-gaap_IncomeTaxExpenseBenefit	$ 4,042us-gaap_IncomeTaxExpenseBenefit	$ 2,422us-gaap_IncomeTaxExpenseBenefit	$ 546us-gaap_IncomeTaxExpenseBenefit
Tax at statutory federal income tax rate (in percent)									34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Tax-exempt income (in percent)									(2.98%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome	(4.77%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome	(11.27%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome
State income tax, net of federal tax benefit (in percent)									3.30%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	3.15%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	1.81%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Release of prior year over accrual (in percent)									0.00%us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.00%us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	(11.01%)us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
Other, net (in percent)									0.24%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.37%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	2.70%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Provision for income tax expense (in percent)									34.56%us-gaap_EffectiveIncomeTaxRateContinuingOperations	32.75%us-gaap_EffectiveIncomeTaxRateContinuingOperations	16.23%us-gaap_EffectiveIncomeTaxRateContinuingOperations

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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