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Investment Securities (Details 1) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
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Available for sale |  |
Contractual Maturities, Less than one year, Amount | $ 115 | $ 1,427
Contractual Maturities, Less than one year, Yield | 0.31% | 1.10%
Contractual Maturities, One to five years, Amount | $ 3,945 | $ 2,666
Contractual Maturities, One to five years, Yield | 2.09% | 1.59%
Contractual Maturities, Five to ten years, Amount | $ 22,688 | $ 24,645
Contractual Maturities, Five to ten years, Yield | 2.34% | 2.27%
Contractual Maturities, Over ten years, Amount | $ 43,319 | $ 38,865
Contractual Maturities, Over ten years, Yield | 2.61% | 2.15%
Contractual Maturities, Total, Amount | $ 70,067 | $ 67,603
Contractual Maturities, Total, Yield | 2.49% | 2.17%
US government agencies [Member] |  |
Available for sale |  |
Contractual Maturities, Less than one year, Amount |  | $ 995
Contractual Maturities, Less than one year, Yield |  | 1.15%
Contractual Maturities, One to five years, Amount | $ 2,641 | $ 1,503
Contractual Maturities, One to five years, Yield | 2.12% | 2.04%
Contractual Maturities, Five to ten years, Amount | $ 6,073 | $ 6,155
Contractual Maturities, Five to ten years, Yield | 2.74% | 2.40%
Contractual Maturities, Over ten years, Amount |  |
Contractual Maturities, Over ten years, Yield |  |
Contractual Maturities, Total, Amount | $ 8,714 | $ 8,653
Contractual Maturities, Total, Yield | 2.55% | 2.20%
SBA securities [Member] |  |
Available for sale |  |
Contractual Maturities, Less than one year, Amount |  |
Contractual Maturities, Less than one year, Yield |  |
Contractual Maturities, One to five years, Amount |  |
Contractual Maturities, One to five years, Yield |  |
Contractual Maturities, Five to ten years, Amount |  |
Contractual Maturities, Five to ten years, Yield |  |
Contractual Maturities, Over ten years, Amount | $ 3,769 | $ 4,063
Contractual Maturities, Over ten years, Yield | 2.60% | 2.45%
Contractual Maturities, Total, Amount | $ 3,769 | $ 4,063
Contractual Maturities, Total, Yield | 2.60% | 2.45%
State and political subdivisions [Member] |  |
Available for sale |  |
Contractual Maturities, Less than one year, Amount |  |
Contractual Maturities, Less than one year, Yield |  |
Contractual Maturities, One to five years, Amount | $ 514 | $ 1,163
Contractual Maturities, One to five years, Yield | 2.14% | 1.96%
Contractual Maturities, Five to ten years, Amount | $ 4,514 | $ 7,162
Contractual Maturities, Five to ten years, Yield | 3.11% | 2.84%
Contractual Maturities, Over ten years, Amount | $ 3,444 | $ 3,071
Contractual Maturities, Over ten years, Yield | 2.83% | 2.76%
Contractual Maturities, Total, Amount | $ 8,472 | $ 11,396
Contractual Maturities, Total, Yield | 2.94% | 2.73%
Asset-backed securities [Member] |  |
Available for sale |  |
Contractual Maturities, Less than one year, Amount |  |
Contractual Maturities, Less than one year, Yield |  |
Contractual Maturities, One to five years, Amount |  |
Contractual Maturities, One to five years, Yield |  |
Contractual Maturities, Five to ten years, Amount |  |
Contractual Maturities, Five to ten years, Yield |  |
Contractual Maturities, Over ten years, Amount | $ 6,691 |
Contractual Maturities, Over ten years, Yield | 2.89% |
Contractual Maturities, Total, Amount | $ 6,691 |
Contractual Maturities, Total, Yield | 2.89% |
Mortgage-backed securities [Member] |  |
Available for sale |  |
Contractual Maturities, Less than one year, Amount | $ 115 | $ 432
Contractual Maturities, Less than one year, Yield | 0.31% | 0.99%
Contractual Maturities, One to five years, Amount | $ 790 |
Contractual Maturities, One to five years, Yield | 1.94% |
Contractual Maturities, Five to ten years, Amount | $ 12,101 | $ 11,328
Contractual Maturities, Five to ten years, Yield | 1.86% | 1.84%
Contractual Maturities, Over ten years, Amount | $ 29,415 | $ 31,731
Contractual Maturities, Over ten years, Yield | 2.53% | 2.06%
Contractual Maturities, Total, Amount | $ 42,421 | $ 43,491
Contractual Maturities, Total, Yield | 2.40% | 1.99%

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