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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
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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)

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