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Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] | The following table provides information on the amortized cost and estimated fair values of investment securities.
|  |  |  |  | Gross |  | Gross |  | Estimated |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair |
(Dollars in thousands) |  | Cost |  | Gains |  | Losses |  | Value |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |
March 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury |  | $ | 5,045 |  | $ | 5 |  | $ | - |  | $ | 5,050 |
U.S. Government agencies |  |  | 49,490 |  |  | 163 |  |  | 145 |  |  | 49,508 |
Mortgage-backed |  |  | 150,090 |  |  | 1,713 |  |  | 278 |  |  | 151,525 |
Equity |  |  | 641 |  |  | 11 |  |  | - |  |  | 652 |
Total |  | $ | 205,266 |  | $ | 1,892 |  | $ | 423 |  | $ | 206,735 |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury |  | $ | 5,078 |  | $ | 1 |  | $ | - |  | $ | 5,079 |
U.S. Government agencies |  |  | 49,630 |  |  | 89 |  |  | 190 |  |  | 49,529 |
Mortgage-backed |  |  | 156,939 |  |  | 639 |  |  | 662 |  |  | 156,916 |
Equity |  |  | 637 |  |  | 4 |  |  | - |  |  | 641 |
Total |  | $ | 212,284 |  | $ | 733 |  | $ | 852 |  | $ | 212,165 |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |
March 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  | $ | 2,380 |  | $ | - |  | $ | 9 |  | $ | 2,371 |
States and political subdivisions |  |  | 1,616 |  |  | 121 |  |  | - |  |  | 1,737 |
Total |  | $ | 3,996 |  | $ | 121 |  | $ | 9 |  | $ | 4,108 |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  | $ | 2,575 |  | $ | - |  | $ | 60 |  | $ | 2,515 |
States and political subdivisions |  |  | 1,616 |  |  | 112 |  |  | - |  |  | 1,728 |
Total |  | $ | 4,191 |  | $ | 112 |  | $ | 60 |  | $ | 4,243 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] | The following tables provide information about gross unrealized losses and fair value by length of time that the individual securities have been in a continuous unrealized loss position at March 31, 2016 and December 31, 2015.
|  | Less than 12 Months |  | More than 12 Months |  | Total |
(Dollars in thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |
March 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  | $ | 13,998 |  | $ | 19 |  | $ | - |  | $ | 126 |  | $ | 13,998 |  | $ | 145 |
Mortgage-backed |  |  | 12,460 |  |  | 45 |  |  | 17,476 |  |  | 233 |  |  | 29,936 |  |  | 278 |
Total |  | $ | 26,458 |  | $ | 64 |  | $ | 17,476 |  | $ | 359 |  | $ | 43,934 |  | $ | 423 |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  | $ | 2,371 |  | $ | 9 |  | $ | - |  | $ | - |  | $ | 2,371 |  | $ | 9 |
|  | Less than 12 Months |  | More than 12 Months |  | Total |
(Dollars in thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  | $ | 18,981 |  | $ | 57 |  | $ | - |  | $ | 133 |  | $ | 18,981 |  | $ | 190 |
Mortgage-backed |  |  | 43,881 |  |  | 328 |  |  | 21,263 |  |  | 334 |  |  | 65,144 |  |  | 662 |
Total |  | $ | 62,862 |  | $ | 385 |  | $ | 21,263 |  | $ | 467 |  | $ | 84,125 |  | $ | 852 |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  | $ | - |  | $ | - |  | $ | 2,515 |  | $ | 60 |  | $ | 2,515 |  | $ | 60 |
Schedule of Securities Debt Maturities [Table Text Block] | The following table provides information on the amortized cost and estimated fair values of investment securities by maturity date at March 31, 2016.
|  | Available for sale |  | Held to maturity |
|  | Amortized |  | Estimated |  | Amortized |  | Estimated |
(Dollars in thousands) |  | Cost |  | Fair Value |  | Cost |  | Fair Value |
Due in one year or less |  | $ | 17,665 |  | $ | 17,694 |  | $ | - |  | $ | - |
Due after one year through five years |  |  | 34,086 |  |  | 34,149 |  |  | 711 |  |  | 753 |
Due after five years through ten years |  |  | 10,715 |  |  | 10,766 |  |  | 402 |  |  | 450 |
Due after ten years |  |  | 142,159 |  |  | 143,474 |  |  | 2,883 |  |  | 2,905 |
|  |  | 204,625 |  |  | 206,083 |  |  | 3,996 |  |  | 4,108 |
Equity securities |  |  | 641 |  |  | 652 |  |  | - |  |  | - |
Total |  | $ | 205,266 |  | $ | 206,735 |  | $ | 3,996 |  | $ | 4,108 |

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