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Investment Securities (Details) - Schedule of unrealized losses not recognized in income - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | $ 278,357 | $ 167,343
Investment Securities Available-for-Sale: Total, Unrealized Losses | (4,470) | (3,283)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 168,028 | 134,954
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (1,631) | (2,483)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 110,329 | 32,389
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (2,839) | (800)
Federal Agency Obligations [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 39,813 | 22,672
Investment Securities Available-for-Sale: Total, Unrealized Losses | (416) | (271)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 28,407 | 21,416
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (213) | (262)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 11,406 | 1,256
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (203) | (9)
Residential Mortgage Backed Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 148,574 | 50,136
Investment Securities Available-for-Sale: Total, Unrealized Losses | (1,948) | (944)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 117,556 | 49,817
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (1,146) | (937)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 31,018 | 319
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (802) | (7)
Commercial Mortgage Backed Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 1,198 |
Investment Securities Available-for-Sale: Total, Unrealized Losses | (3) |
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 1,198 |
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (3) |
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value |  |
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses |  |
Obligation Of U.S. States And Political Subdivisions [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 57,685 | 52,307
Investment Securities Available-for-Sale: Total, Unrealized Losses | (1,334) | (931)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 17,909 | 52,307
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (246) | (931)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 39,776 |
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (1,088) |
Trust Preferred Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 1,469 | 1,427
Investment Securities Available-for-Sale: Total, Unrealized Losses | (111) | (151)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value |  |
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses |  |
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 1,469 | 1,427
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (111) | (151)
Corporate Bonds And Notes [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 11,074 | 15,930
Investment Securities Available-for-Sale: Total, Unrealized Losses | (271) | (375)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 1,965 | 7,671
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (21) | (265)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 9,109 | 8,259
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (250) | (110)
Asset-backed Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 7,428 | 13,404
Investment Securities Available-for-Sale: Total, Unrealized Losses | (37) | (286)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 993 | 3,743
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (2) | (88)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 6,435 | 9,661
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (35) | (198)
Other Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 11,116 | 11,467
Investment Securities Available-for-Sale: Total, Unrealized Losses | (350) | (325)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value |  |
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses |  |
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 11,116 | 11,467
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | $ (350) | $ (325)

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