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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
Computed tax expense					$ 7,283	$ 7,392	$ 7,184
Officers' life insurance					(244)	(209)	(88)
Tax exempt interest					(1,388)	(1,303)	(1,325)
Acquisition costs					289
State taxes, net of federal benefit					141	142	171
Other					(205)	(55)	(28)
Income taxes	$ 426	$ 1,850	$ 1,804	$ 1,796	$ 5,876	$ 5,967	$ 5,914
Computed tax expense, percent					35.00%	35.00%	35.00%
Officers' life insurance, percent					(1.17%)	(0.99%)	(0.43%)
Tax exempt interest, percent					(6.67%)	(6.17%)	(6.44%)
Acquisition costs, percent					1.39%	0.00%	0.00%
State taxes, net of federal benefit, percent					0.68%	0.67%	0.83%
Other, percent					(0.99%)	(0.26%)	(0.22%)
Income taxes, percent					28.24%	28.25%	28.74%

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