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Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) (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, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Federal					$ 5,411us-gaap_CurrentFederalTaxExpenseBenefit	$ 5,060us-gaap_CurrentFederalTaxExpenseBenefit	$ 4,867us-gaap_CurrentFederalTaxExpenseBenefit
State					263	242	160
Current income tax expense (benefit)					5,674us-gaap_CurrentIncomeTaxExpenseBenefit	5,302us-gaap_CurrentIncomeTaxExpenseBenefit	5,027us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred					240us-gaap_DeferredIncomeTaxExpenseBenefit	(111)us-gaap_DeferredIncomeTaxExpenseBenefit	(83)us-gaap_DeferredIncomeTaxExpenseBenefit
Income taxes	$ 1,195us-gaap_IncomeTaxExpenseBenefit	$ 1,623us-gaap_IncomeTaxExpenseBenefit	$ 1,511us-gaap_IncomeTaxExpenseBenefit	$ 1,585us-gaap_IncomeTaxExpenseBenefit	$ 5,914us-gaap_IncomeTaxExpenseBenefit	$ 5,191us-gaap_IncomeTaxExpenseBenefit	$ 4,944us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.