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Securities (Contractual Maturity) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Available-for-Sale, Amortized Cost    
Due in one year or less $ 1,160  
Due in one year through five years 9,247  
Due in five through ten years 30,985  
Due in over ten years 117,945  
Amortized cost 159,337 $ 140,337
Available-for-Sale, Estimated Fair Value    
Due in one year or less 1,161  
Due in one year through five years 9,305  
Due in five through ten years 31,461  
Due in over ten years 118,738  
Estimated fair value 160,665 138,358
Held-to-Maturity, Amortized Cost    
Due in one year or less 770  
Due in one year through five years 13,706  
Due in five through ten years 13,935  
Due in over ten years 4,989  
Amortized cost 33,400 37,731
Held-to-Maturity, Estimated Fair Value    
Due in one year or less 772  
Due in one year through five years 13,856  
Due in five through ten years 14,277  
Due in over ten years 5,058  
Estimated Fair Value $ 33,963 $ 37,409