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Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2017
Investment Securities [Abstract] |
Summary of amortized costs and fair value of investment securities |
|  | March 31, 2017
|  | Amortized |  | Gross Unrealized |  | Fair
(dollars in thousands) |  | Cost |  | Gains |  | Losses |  | Value
Available for sale |  |  |  |  |  |  |  |  |
US government agencies |  | $ | 6,266 |  | 4 |  | 90 |  | 6,180
SBA securities |  |  | 1,436 |  | - |  | 16 |  | 1,420
State and political subdivisions |  |  | 20,584 |  | 186 |  | 198 |  | 20,572
Mortgage-backed securities |  |  | 35,076 |  | 14 |  | 426 |  | 34,664
Total investment securities available for sale |  | $ | 63,362 |  | 204 |  | 730 |  | 62,836
| December 31, 2016
|  | Amortized |  | Gross Unrealized |  | Fair
|  | Cost |  | Gains |  | Losses |  | Value
Available for sale |  |  |  |  |  |  |  |  |
US government agencies |  | $ | 6,271 |  | 1 |  | 113 |  | 6,159
SBA securities |  |  | 1,453 |  | - |  | 16 |  | 1,437
State and political subdivisions |  |  | 20,625 |  | 141 |  | 292 |  | 20,474
Mortgage-backed securities |  |  | 36,895 |  | 21 |  | 506 |  | 36,410
Total investment securities available for sale |  | $ | 65,244 |  | 163 |  | 927 |  | 64,480
Summary of contractual maturities and yields |
|  | March 31, 2017
|  | Less than one year |  | One to five years |  | Five to ten years |  | Over ten years |  |  |  | Total
(dollars in thousands) |  | Amount |  | Yield |  | Amount |  | Yield |  | Amount |  | Yield |  | Amount |  | Yield |  | Amount |  | Yield
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US government agencies |  | $ | - |  | - |  | 2,014 |  | 1.61 | % |  | 4,166 |  | 2.27 | % |  | - |  | - |  |  | 6,180 |  | 2.06 | %
SBA securities |  |  | - |  | - |  | - |  | - |  |  | - |  | - |  |  | 1,420 |  | 1.56 | % |  | 1,420 |  | 1.56 | %
State and political subdivisions |  |  | - |  | - |  | 2,822 |  | 1.80 | % |  | 12,063 |  | 2.36 | % |  | 5,687 |  | 2.82 | % |  | 20,572 |  | 2.41 | %
Mortgage-backed securities |  |  | - |  | - |  | - |  | - |  |  | 8,014 |  | 1.66 | % |  | 26,650 |  | 1.82 | % |  | 34,664 |  | 1.78 | %
Total |  | $ | - |  | - |  | 4,836 |  | 1.72 | % |  | 24,243 |  | 2.11 | % |  | 33,757 |  | 1.98 | % |  | 62,836 |  | 2.01 | %
|  | December 31, 2016
|  | Less than one year |  | One to five years |  | Five to ten years |  | Over ten years |  |  |  | Total
|  | Amount |  | Yield |  | Amount |  | Yield |  |  | Amount |  | Yield |  | Amount |  | Yield |  | Amount |  | Yield
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US government agencies |  | $ | - |  | - |  | 997 |  | 1.15 | % |  | 5,162 |  | 2.23 | % |  | - |  | - |  |  | 6,159 |  | 2.06 | %
SBA securities |  |  | - |  | - |  | - |  | - |  |  | - |  | - |  |  | 1,437 |  | 1.32 | % |  | 1,437 |  | 1.32 | %
State and political subdivisions |  |  | - |  | - |  | 2,271 |  | 1.73 | % |  | 12,287 |  | 2.35 | % |  | 5,916 |  | 2.77 | % |  | 20,474 |  | 2.40 | %
Mortgage-backed securities |  |  | - |  | - |  | - |  | - |  |  | 8,527 |  | 1.64 | % |  | 27,883 |  | 1.68 | % |  | 36,410 |  | 1.67 | %
Total |  | $ | - |  | - |  | 3,268 |  | 1.55 | % |  | 25,976 |  | 2.10 | % |  | 35,236 |  | 1.85 | % |  | 64,480 |  | 1.93 | %
Summary of gross unrealized losses on investment securities and fair market value of related securities |
| March 31, 2017
|  | Less than 12 months |  | 12 months or longer |  |  |  |  |  |  | Total
|  |  |  | Fair |  | Unrealized |  |  |  | Fair |  | Unrealized |  |  |  | Fair |  | Unrealized
(dollars in thousands) |  | # |  | value |  | losses |  | # |  | value |  | losses |  | # |  | value |  | losses
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US government agencies |  | 4 |  | $ | 3,967 |  | $ | 90 |  | - |  | $ | - |  | $ | - |  | 4 |  | $ | 3,967 |  | $ | 90
SBA securities |  | - |  |  | - |  |  | - |  | 1 |  |  | 1,421 |  |  | 16 |  | 1 |  |  | 1,421 |  |  | 16
State and political subdivisions |  | 24 |  |  | 10,519 |  |  | 198 |  | - |  |  | - |  |  | - |  | 24 |  |  | 10,519 |  |  | 198
Mortgage-backed securities |  | 26 |  |  | 28,837 |  |  | 396 |  | 2 |  |  | 3,722 |  |  | 30 |  | 28 |  |  | 32,559 |  |  | 426
Total |  | 54 |  | $ | 43,323 |  | $ | 684 |  | 3 |  | $ | 5,143 |  | $ | 46 |  | 57 |  | $ | 48,466 |  | $ | 730
| December 31, 2016
|  | Less than 12 months |  | 12 months or longer |  |  |  |  |  |  | Total
|  |  |  | Fair |  | Unrealized |  |  |  | Fair |  | Unrealized |  |  |  | Fair |  | Unrealized
|  | # |  | value |  | losses |  | # |  | value |  | losses |  | # |  | value |  | losses
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US government agencies |  | 5 |  | $ | 5,144 |  | $ | 113 |  | - |  | $ | - |  | $ | - |  | 5 |  | $ | 5,144 |  | $ | 113
SBA securities |  | 1 |  |  | 1,437 |  |  | 16 |  | - |  |  | - |  |  | - |  | 1 |  |  | 1,437 |  |  | 16
State and political subdivisions |  | 32 |  |  | 13,936 |  |  | 292 |  | - |  |  | - |  |  | - |  | 32 |  |  | 13,936 |  |  | 292
Mortgage-backed securities |  | 25 |  |  | 27,292 |  |  | 476 |  | 2 |  |  | 3,991 |  |  | 30 |  | 27 |  |  | 31,283 |  |  | 506
Total |  | 63 |  | $ | 47,809 |  | $ | 897 |  | 2 |  | $ | 3,991 |  | $ | 30 |  | 65 |  | $ | 51,800 |  | $ | 927
Summary of other investments |
(dollars in thousands) |  |  | March 31, 2017 |  | December 31, 2016
Federal Home Loan Bank stock |  | $ | 4,965 |  | 5,173
Investment in Trust Preferred securities |  |  | 403 |  | 403
Other investments |  |  | 155 |  | 166
Total other investments |  | $ | 5,523 |  | 5,742

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