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Securities (Tables) | 3 Months Ended
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Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract] |
Available-for-sale Securities [Table Text Block] | The estimated fair value of available-for-sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) were as follows:
|  | (Dollars in thousands) |
|  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Cost |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Basis |  |  | Gains |  |  | Losses |  |  | Value |
March 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 3,070 |  |  | $ | - |  |  | $ | - |  |  | $ | 3,070 |
U.S. government sponsored entities |  |  | 20,249 |  |  |  | 23 |  |  |  | (29 | ) |  |  | 20,243 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 111,431 |  |  |  | 2,046 |  |  |  | (185 | ) |  |  | 113,292 |
Municipal securities |  |  | 87,822 |  |  |  | 3,839 |  |  |  | (64 | ) |  |  | 91,597 |
Collateralized debt obligations |  |  | 5,117 |  |  |  | - |  |  |  | (2,477 | ) |  |  | 2,640 |
Total securities available-for-sale |  | $ | 227,689 |  |  | $ | 5,908 |  |  | $ | (2,755 | ) |  | $ | 230,842 |
|  | (Dollars in thousands) |
|  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Cost |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Basis |  |  | Gains |  |  | Losses |  |  | Value |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 6,453 |  |  | $ | - |  |  | $ | - |  |  | $ | 6,453 |
U.S. government sponsored entities |  |  | 13,000 |  |  |  | 2 |  |  |  | (133 | ) |  |  | 12,869 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 116,088 |  |  |  | 1,870 |  |  |  | (384 | ) |  |  | 117,574 |
Municipal securities |  |  | 76,989 |  |  |  | 3,749 |  |  |  | (13 | ) |  |  | 80,725 |
Collateralized debt obligations |  |  | 5,141 |  |  |  | - |  |  |  | (2,709 | ) |  |  | 2,432 |
Total securities available-for-sale |  | $ | 217,671 |  |  | $ | 5,621 |  |  | $ | (3,239 | ) |  | $ | 220,053 |
Schedule of Contractual Maturities of Available-for-sale Debt Securities [Table Text Block] | The estimated fair value of available-for-sale debt securities at March 31, 2015, by contractual maturity, were as follows. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately.
|  | (Dollars in thousands) |
|  | Available-for-sale |
|  | Estimated |  |  |  |
|  | Fair |  |  | Tax-Equivalent |
March 31, 2015 |  | Value |  |  | Yield (%) |
Due in one year or less |  | $ | 6,962 |  |  |  | 8.02 |
Due from one to five years |  |  | 25,123 |  |  |  | 2.24 |
Due from five to ten years |  |  | 21,644 |  |  |  | 6.10 |
Due over ten years |  |  | 63,821 |  |  |  | 4.56 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 113,292 |  |  |  | 2.57 |
Total |  | $ | 230,842 |  |  |  | 3.58 |
Schedule of Realized Gain (Loss) [Table Text Block] | Sales of available-for-sale securities were as follows for the three months ended:
|  | (Dollars in thousands) |
|  | March 31, |  |  | March 31, |
|  | 2015 |  |  | 2014 |
Proceeds |  | $ | 12,864 |  |  | $ | 21,559 |
Gross gains |  |  | 393 |  |  |  | 621 |
Gross losses |  |  | - |  |  |  | (271 | )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Accumulated other comprehensive income/(loss) balances, net of tax, related to available-for-sale securities, were as follows:
|  | (Dollars in thousands) |
|  | Unrealized gain/(loss) |
Ending balance, December 31, 2014 |  | $ | 1,556 |
Current period change |  |  | 513 |
Ending balance, March 31, 2015 |  | $ | 2,069 |
Unrealized Gain (Loss) on Investments [Table Text Block] | Securities with unrealized losses at March 31, 2015 and December 31, 2014 not recognized in income are as follows:
|  | (Dollars in thousands) |
|  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | Estimated |  |  |  |  |  | Estimated |  |  |  |  |  | Estimated |  |  |  |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
March 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities |  | $ | 997 |  |  | $ | (3 | ) |  | $ | 6,974 |  |  | $ | (26 | ) |  | $ | 7,971 |  |  | $ | (29 | )
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 5,196 |  |  |  | (8 | ) |  |  | 9,241 |  |  |  | (177 | ) |  |  | 14,437 |  |  |  | (185 | )
Municipal securities |  |  | 5,495 |  |  |  | (64 | ) |  |  | - |  |  |  | - |  |  |  | 5,495 |  |  |  | (64 | )
Collateralized debt obligations |  |  | - |  |  |  | - |  |  |  | 2,640 |  |  |  | (2,477 | ) |  |  | 2,640 |  |  |  | (2,477 | )
Total temporarily impaired |  | $ | 11,688 |  |  | $ | (75 | ) |  | $ | 18,855 |  |  | $ | (2,680 | ) |  | $ | 30,543 |  |  | $ | (2,755 | )
Number of securities |  |  |  |  |  |  | 16 |  |  |  |  |  |  |  | 17 |  |  |  |  |  |  |  | 33 |
|  | (Dollars in thousands) |
|  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | Estimated |  |  |  |  |  | Estimated |  |  |  |  |  | Estimated |  |  |  |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities |  | $ | 1,496 |  |  | $ | (4 | ) |  | $ | 10,371 |  |  | $ | (129 | ) |  | $ | 11,867 |  |  | $ | (133 | )
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 8,169 |  |  |  | (40 | ) |  |  | 14,486 |  |  |  | (344 | ) |  |  | 22,655 |  |  |  | (384 | )
Municipal securities |  |  | 687 |  |  |  | (3 | ) |  |  | 1,459 |  |  |  | (10 | ) |  |  | 2,146 |  |  |  | (13 | )
Collateralized debt obligations |  |  | - |  |  |  | - |  |  |  | 2,432 |  |  |  | (2,709 | ) |  |  | 2,432 |  |  |  | (2,709 | )
Total temporarily impaired |  | $ | 10,352 |  |  | $ | (47 | ) |  | $ | 28,748 |  |  | $ | (3,192 | ) |  | $ | 39,100 |  |  | $ | (3,239 | )
Number of securities |  |  |  |  |  |  | 9 |  |  |  |  |  |  |  | 29 |  |  |  |  |  |  |  | 38 |

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