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Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Dec. 31, 2014
Sep. 30, 2012
Schedule Of Goodwill And Other Intangible Assets [Line Items]          
Goodwill $ 4,935 $ 4,935 $ 4,935 $ 4,935  
Core deposit intangible asset, estimated life 8 years 6 months        
Balance of core deposit intangibles $ 447 $ 470      
Expected amortization for 2016 92        
Expected amortization for 2017 92        
Expected amortization for 2018 92        
Expected amortization for 2019 92        
Expected amortization for 2020 92        
Expected amortization for 2021 $ 8        
Border Trust Company [Member]          
Schedule Of Goodwill And Other Intangible Assets [Line Items]          
Goodwill         $ 1,777