| **Derivative Instruments and Hedging Activities (Tables)**                               | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| **Derivative Instruments and Hedging Activities Disclosure [Abstract]**                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Fair Value of Derivative Financial Instruments and Their Classification on Balance Sheet | The table below presents the fair value of the Corporation’s derivative financial instruments as well as their classification on the Balance Sheet as of December 31, 2013 and December 31, 2012. Asset DerivativesLiability Derivatives December 31, 2013December 31, 2012December 31, 2013December 31, 2012 Balance Sheet LocationFairValueBalance Sheet LocationFairValueBalance Sheet LocationFairValueBalance Sheet LocationFairValueDerivatives designated as hedging instruments:        Interest rate contractsOther Assets$1,162Other Assets$197Other Liabilities$1,021Other Liabilities$3,332Derivatives not designated as hedging instruments:        Interest rate contractsOther Assets$2,847Other Assets$6,103Other Liabilities$2,932Other Liabilities$6,434                                                                                                                                                                                                                                                      |
| Effect of Derivative Financial Instruments on Income Statement                           | The tables below present the effect of the Corporation’s derivative financial instruments on the Income Statement for the years ended December 31, 2013,  2012 and 2011.Derivatives NotDesignated as HedgingInstruments underFASB ASC 815-10Location of Gain(Loss) Recognized inIncome on DerivativeAmount of Gain (Loss)Recognized in Income onDerivative for the Year Ended December 31, 2013Amount of Gain (Loss)Recognized in Income onDerivative for the Year Ended December 31, 2012 Amount of Gain (Loss)Recognized in Income onDerivative for the Year Ended December 31, 2011Interest Rate ContractsOther income$247$(79) $(94) Derivatives in Cash Flow Hedging RelationshipsAmount of Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion) For the Year Ended Location of Loss Reclassified from Accumulated Other Comprehensive Income (Effective Portion) Amount of Loss Reclassified from Other Comprehensive Income into Income (Effective Portion)For the Year Ended20132012  20132012Interest Rate Products$2,374$(1,466) Interest Expense $(935)$(217) |

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| - Definition
Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959
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| - Definition
Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959
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