| **Premises and Equipment**                   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
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| **Property, Plant and Equipment [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Premises and Equipment                       | PREMISES AND EQUIPMENTThe following table summarizes the Corporation's premises and equipment as of December 31, 2013 and 2012: 2013 2012Cost at December 31:   Land$17,992 $14,692Buildings and Leasehold Improvements92,693 62,606Equipment54,274 42,564Total Cost164,959 119,862Accumulated Depreciation and Amortization(90,505) (67,113)Net$74,454 $52,749 On November 12, 2013, the Corporation acquired 100 percent of CFS in an all stock transaction, as discussed in NOTE 3. BUSINESS COMBINATIONS, in the Notes to Consolidated Financial Statements included as Item 8 of this Annual Report on Form 10-K.  This purchase resulted in premises and equipment acquired of approximately $19,643,000. The Corporation is committed under various non-cancelable lease contracts for certain subsidiary office facilities and equipment. Total lease expense for 2013, 2012 and 2011 was $2,608,000, $2,812,000 and  $2,636,000, respectively. The future minimum rental commitments required under the operating leases in effect at December 31, 2013, expiring at various dates through the year 2028 are as follows for the years ending December 31: Future Minimum Rental Commitments2014$2,80420152,55120162,06720171,3562018749After 20183,158Total Future Minimum Obligations$12,685 |

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| - Definition
The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.
+ References
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