| **Impact of Accounting Changes**                        | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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| **Accounting Changes and Error Corrections [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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| Impact of Accounting Changes                            | IMPACT OF ACCOUNTING CHANGESThe Corporation continually monitors potential accounting changes and pronouncements.  The following pronouncements have been deemed to have the most applicability to the Corporation's financial statements:FASB Accounting Standards Update No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Summary - The FASB has issued Accounting Standards Update (ASU) No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU is intended to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations.  The ASU requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates.Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. Organizations will continue to use judgment to determine which loss estimation method is appropriate for their circumstances.The ASU requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. These disclosures include qualitative and quantitative requirements that provide additional information about the amounts recorded in the financial statements.In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration.The ASU is effective for SEC filers for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 (i.e., January 1, 2020, for calendar year entities). For public companies that are not SEC filers, the ASU is effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. For all other organizations, the ASU on credit losses will take effect for fiscal years beginning after December 15, 2020, and for interim periods within fiscal years beginning after December 15, 2021.Early application will be permitted for all organizations for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018.  The Corporation is evaluating the effects of this ASU on its consolidated financial statements.FASB Accounting Standards Update No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting Summary - The amendments in ASU 2016-09 simplify several aspects of accounting for employee share-based payments including income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows.  Some areas of the simplification apply only to nonpublic entities.  The new guidance will require all income tax effects of awards to be recognized as income tax expense or benefit in the income statement when the awards vest or are settled and additional paid in capital pools will be eliminated.  The guidance requires companies to present excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity.  Companies will be required to account for forfeitures of share-based payments by recognizing forfeitures of awards as they occur or estimating the number of awards expected to be forfeited and adjusting the estimate when it is likely to change, as currently required, through an accounting policy election.  The guidance will increase the amount an employer can withhold to cover income taxes on awards and still qualify for the exception to liability classification for shares used to satisfy the employer's income tax withholding obligation.  The guidance requires an employer to classify the cash paid to a tax authority when shares are withheld to satisfy its statutory income tax withholding obligation as a financing activity on the statement of cash flows.  For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years.  Early adoption will be permitted in any interim or annual period for which financial statements have not yet been issued or have not been made available for issuance, however all of the guidance must be adopted in the same period.  If early adoption is elected in an interim period, any adjustments should be reflected as of the beginning of the annual period that includes that interim period.  Adoption of this ASU is not expected to have a significant effect on the Corporation’s consolidated financial statements.The amendments clarify what steps are required when assessing whether the economic characteristics and risks of call (put) options are clearly and closely related to the economic characteristics and risks of their debt hosts, which is one of the criteria for bifurcating an embedded derivative. Consequently, when a call (put) option is contingently exercisable, an entity does not have to assess whether the event that triggers the ability to exercise a call (put) option is related to interest rates or credit risks.Public business entities must apply the new requirements for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. If an entity early adopts the new requirements in an interim period, it must reflect any adjustments as of the beginning of the fiscal year that includes that interim period.  The Corporation is evaluating the effects of this ASU on its consolidated financial statements.FASB Accounting Standards Update No. 2016-02 - Leases (Topic 842)Summary - The FASB has issued its new lease accounting guidance in Accounting Standards Update (ASU) No. 2016-02, Leases (Topic 842).  Under the new guidance, lessees will be required to recognize the following for all leases (with the exception of short-term leases) at the commencement date:•A lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and •A right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term.Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers.The new lease guidance simplified the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees will no longer be provided with a source of off-balance sheet financing.Public business entities should apply the amendments in ASU 2016-02 for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years (i.e., January 1, 2019, for a calendar year entity). Early application is permitted for all public business entities and all nonpublic business entities upon issuance.Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach.  The Corporation is evaluating the effect of this ASU on its consolidated financial statements.FASB Accounting Standards Update No. 2014-09 - Revenue from Contracts with Customers (Topic 606)Summary - The FASB issued  Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers, which implements a common revenue standard that clarifies the principles for recognizing revenue.  The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  To achieve that core principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation.  ASU 2014-09 is effective on January 1, 2018.  The Corporation is evaluating the effects of this ASU on its consolidated financial statements. |

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No definition available.
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| - Definition
The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.
+ References
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