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Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]        
Goodwill impairment $ 1,600 $ 1,575   $ 751
Contingent consideration liability adjustment   1,200 $ 1,170 1,093
Amortization during the year   1,170 1,249 942
Core Deposits [Member]        
Finite-Lived Intangible Assets [Line Items]        
Amortization during the year   205 251 296
Other Intangible Assets [Member]        
Finite-Lived Intangible Assets [Line Items]        
Amortization during the year   $ 965 $ 998 $ 646