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Securities Available-for-Sale (Details) - Schedule of unrealized losses not recognized in income - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Investment Securities:    
Investment Securities: Total, Fair Value $ 332,591 $ 278,357
Investment Securities: Total, Unrealized Losses (12,082) (4,470)
Investment Securities: Less than 12 Months, Fair Value 178,532 168,028
Investment Securities: Less than 12 Months, Unrealized Losses (4,123) (1,631)
Investment Securities: 12 Months or Longer, Fair Value 154,059 110,329
Investment Securities: 12 Months or Longer, Unrealized Losses (7,959) (2,839)
Federal agency obligations [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value 45,057 39,813
Investment Securities: Total, Unrealized Losses (1,443) (416)
Investment Securities: Less than 12 Months, Fair Value 21,455 28,407
Investment Securities: Less than 12 Months, Unrealized Losses (513) (213)
Investment Securities: 12 Months or Longer, Fair Value 23,602 11,406
Investment Securities: 12 Months or Longer, Unrealized Losses (930) (203)
Residential mortgage pass-through securities [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value 185,442 148,574
Investment Securities: Total, Unrealized Losses (6,174) (1,948)
Investment Securities: Less than 12 Months, Fair Value 106,190 117,556
Investment Securities: Less than 12 Months, Unrealized Losses (2,491) (1,146)
Investment Securities: 12 Months or Longer, Fair Value 79,252 31,018
Investment Securities: 12 Months or Longer, Unrealized Losses (3,683) (802)
Commercial mortgage pass-through securities [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value 3,843 1,198
Investment Securities: Total, Unrealized Losses (110) (3)
Investment Securities: Less than 12 Months, Fair Value 3,843 1,198
Investment Securities: Less than 12 Months, Unrealized Losses (110) (3)
Investment Securities: 12 Months or Longer, Fair Value
Investment Securities: 12 Months or Longer, Unrealized Losses
Obligations of U.S. states and political subdivisions [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value 78,481 57,685
Investment Securities: Total, Unrealized Losses (3,903) (1,334)
Investment Securities: Less than 12 Months, Fair Value 33,733 17,909
Investment Securities: Less than 12 Months, Unrealized Losses (877) (246)
Investment Securities: 12 Months or Longer, Fair Value 44,748 39,776
Investment Securities: 12 Months or Longer, Unrealized Losses (3,026) (1,088)
Corporate bonds and notes [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value 15,655 11,074
Investment Securities: Total, Unrealized Losses (439) (271)
Investment Securities: Less than 12 Months, Fair Value 11,008 1,965
Investment Securities: Less than 12 Months, Unrealized Losses (124) (21)
Investment Securities: 12 Months or Longer, Fair Value 4,647 9,109
Investment Securities: 12 Months or Longer, Unrealized Losses (315) (250)
Asset-backed securities [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value 4,113 7,428
Investment Securities: Total, Unrealized Losses (13) (37)
Investment Securities: Less than 12 Months, Fair Value 2,303 993
Investment Securities: Less than 12 Months, Unrealized Losses (8) (2)
Investment Securities: 12 Months or Longer, Fair Value 1,810 6,435
Investment Securities: 12 Months or Longer, Unrealized Losses $ (5) (35)
Trust preferred securities [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value   1,469
Investment Securities: Total, Unrealized Losses   (111)
Investment Securities: Less than 12 Months, Fair Value  
Investment Securities: Less than 12 Months, Unrealized Losses  
Investment Securities: 12 Months or Longer, Fair Value   1,469
Investment Securities: 12 Months or Longer, Unrealized Losses   (111)
Equity securities [Member]    
Investment Securities:    
Investment Securities: Total, Fair Value   11,116
Investment Securities: Total, Unrealized Losses   (350)
Investment Securities: Less than 12 Months, Fair Value  
Investment Securities: Less than 12 Months, Unrealized Losses  
Investment Securities: 12 Months or Longer, Fair Value   11,116
Investment Securities: 12 Months or Longer, Unrealized Losses   $ (350)