| **Investment Securities Maturity of Held-to-Maturity Securities (Tables)** | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
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| **Schedule of Held-to-maturity Securities [Line Items]**                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Held-to-maturity Securities [Table Text Block]                             | Below is an analysis of the amortized cost and fair values of debt securities held to maturity at September 30, 2015. There were no held to maturity securities at December 31, 2014. September 30, 2015 AmortizedCost GrossUnrealizedGains GrossUnrealizedLosses EstimatedFair Value (dollars in thousands)Obligations of U.S. Government Agencies:       Mortgage-Backed Securities – Residential$4,806 $24 $— $4,830Obligations of U.S. Government-Sponsored Enterprises:       Mortgage-Backed Securities – Residential$116,065 $520 $(6) $116,579Mortgage-Backed Securities – Commercial15,299 176 — 15,475Obligations of States and Political Subdivisions17,865 131 (43) 17,953Total Securities Held to Maturity$154,035 $851 $(49) $154,837                                                                                               |
| Schedule of Held-to-Maturity Securities by Maturity [Table Text Block]     | The amortized cost and estimated fair value of debt securities held to maturity at September 30, 2015, by contractual maturity, are shown below.  Expected maturities will differ from contractual maturities because borrowers may have the right to call or repay obligations with or without call or prepayment penalties. AmortizedCost EstimatedFair Value (dollars in thousands)Due within 1 year$— $—Due after 1 but within 5 years— —Due after 5 but within 10 years12,210 12,303Due after 10 years5,655 5,650 17,865 17,953Mortgage-Backed Securities (a)136,170 136,884Total Debt Securities$154,035 $154,837(a)Mortgage Backed Securities include an amortized cost of $4.8 million and a fair value of $4.8 million for Obligations of U.S. Government agencies issued by Ginnie Mae and an amortized cost of $131.4 million and a fair value of $132.1 million for Obligations of U.S. Government-sponsored enterprises issued by Fannie Mae and Freddie Mac. |

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| - Definition
[Table Text Block] for Schedule of Held-to-Maturity Securities by Maturity [Table]
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| - Definition
Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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