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Income Taxes (Schedule of Effective Tax Rate Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Tax provision at statutory rate	$ 13,486us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ 11,473us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (14,125)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Increase (decrease) in income taxes resulting from:
Tax-exempt interest income	(832)us-gaap_IncomeTaxReconciliationTaxExemptIncome	(818)us-gaap_IncomeTaxReconciliationTaxExemptIncome	(831)us-gaap_IncomeTaxReconciliationTaxExemptIncome
Low income housing tax credits	(179)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment	(150)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment	(181)us-gaap_IncomeTaxReconciliationTaxCreditsInvestment
Non-deductible interest expense	11us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther	15us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther	23us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther
State income taxes, net of federal benefit	1,375us-gaap_IncomeTaxReconciliationTaxCreditsOther	1,366us-gaap_IncomeTaxReconciliationTaxCreditsOther	(1,714)us-gaap_IncomeTaxReconciliationTaxCreditsOther
Change in valuation allowance	16us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	(3)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	31us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Other, net	(342)us-gaap_IncomeTaxReconciliationOtherAdjustments	198us-gaap_IncomeTaxReconciliationOtherAdjustments	(155)us-gaap_IncomeTaxReconciliationOtherAdjustments
Income tax expense (benefit)	$ 13,535us-gaap_IncomeTaxExpenseBenefit	$ 12,081us-gaap_IncomeTaxExpenseBenefit	$ (16,952)us-gaap_IncomeTaxExpenseBenefit

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

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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