| **Borrowings (Tables)**                  | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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| **Debt Disclosure [Abstract]**           |                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| Schedule of Debt                         | The following table summarizes the Corporation's borrowings as of December 31, 2014 and 2013:December 31, 2014December 31, 2013Federal funds purchased$15,381$125,645Securities sold under repurchase agreements124,539148,672Federal Home Loan Bank advances145,264122,140Subordinated debentures and term loans126,810126,807Total Borrowings$411,994$523,264                                                                                        |
| Schedule of Maturities of Long-term Debt | Maturities of securities sold under repurchase agreements; Federal Home Loan Bank Advances, subordinated debentures and term loans as of December 31, 2014, are as follows:Maturities in Years Ending December 31:Securities SoldUnder Repurchase AgreementsFederal HomeLoan BankAdvancesSubordinatedDebentures andTerm Loans2015$124,539$30,780$108201641,225201715,018201825,637201912,503After 201920,101126,702 $124,539$145,264$126,810 |

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| - Definition
Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.
+ References
No definition available.
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| - Definition
Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601
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