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Investment Securities (Details 1) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
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Loan maturity distribution by type and related interest rate |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Value |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield |  |
Available-for-sale Securities, Contractual Maturities, One to five years, Value | $ 4,836 | $ 3,268
Available-for-sale Securities, Contractual Maturities, One to five years, Yield | 1.72% | 1.55%
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value | $ 24,243 | $ 25,976
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield | 2.11% | 2.10%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value | $ 33,757 | $ 35,236
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield | 1.98% | 1.85%
Investment securities available for sale, Value | $ 62,836 | $ 64,480
Available-for-sale Securities, Contractual Securities, Yield Total | 2.01% | 1.93%
US government agencies [Member] |  |
Loan maturity distribution by type and related interest rate |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Value |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield |  |
Available-for-sale Securities, Contractual Maturities, One to five years, Value | $ 2,014 | $ 997
Available-for-sale Securities, Contractual Maturities, One to five years, Yield | 1.61% | 1.15%
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value | $ 4,166 | $ 5,162
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield | 2.27% | 2.23%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value |  |
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield |  |
Investment securities available for sale, Value | $ 6,180 | $ 6,159
Available-for-sale Securities, Contractual Securities, Yield Total | 2.06% | 2.06%
SBA securities [Member] |  |
Loan maturity distribution by type and related interest rate |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Value |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield |  |
Available-for-sale Securities, Contractual Maturities, One to five years, Value |  |
Available-for-sale Securities, Contractual Maturities, One to five years, Yield |  |
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value |  |
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield |  |
Available-for-sale Securities, Contractual Maturities, Over ten years, Value | $ 1,420 | $ 1,437
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield | 1.56% | 1.32%
Investment securities available for sale, Value | $ 1,420 | $ 1,437
Available-for-sale Securities, Contractual Securities, Yield Total | 1.56% | 1.32%
State and political subdivisions [Member] |  |
Loan maturity distribution by type and related interest rate |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Value |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield |  |
Available-for-sale Securities, Contractual Maturities, One to five years, Value | $ 2,822 | $ 2,271
Available-for-sale Securities, Contractual Maturities, One to five years, Yield | 1.80% | 1.73%
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value | $ 12,063 | $ 12,287
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield | 2.36% | 2.35%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value | $ 5,687 | $ 5,916
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield | 2.82% | 2.77%
Investment securities available for sale, Value | $ 20,572 | $ 20,474
Available-for-sale Securities, Contractual Securities, Yield Total | 2.41% | 2.40%
Mortgage-backed securities [Member] |  |
Loan maturity distribution by type and related interest rate |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Value |  |
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield |  |
Available-for-sale Securities, Contractual Maturities, One to five years, Value |  |
Available-for-sale Securities, Contractual Maturities, One to five years, Yield |  |
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value | $ 8,014 | $ 8,527
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield | 1.66% | 1.64%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value | $ 26,650 | $ 27,883
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield | 1.82% | 1.68%
Investment securities available for sale, Value | $ 34,664 | $ 36,410
Available-for-sale Securities, Contractual Securities, Yield Total | 1.78% | 1.67%

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