Basis of Presentation Basis of Presentation (Policies)	3 Months Ended
Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
New Accounting Pronouncements, Policy	Recently Adopted Accounting Standards The Corporation adopted FASB ASC Update 2015-02, "Consolidation: Amendments to the Consolidation Analysis" effective January 1, 2016. ASC Update 2015-02 changed the way reporting enterprises evaluate whether: (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity ("VIE"), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. ASC Update 2015-02 was effective for public business entities' annual and interim reporting periods that began after December 15, 2015, with earlier adoption permitted. The adoption of ASC Update 2015-02 did not have a material impact on the Corporation's consolidated financial statements. Effective January 1, 2016, the Corporation adopted FASB ASC Update 2015-03, "Interest - Imputation of Interest" and the updated ASC Update 2015-03 with the issuance of ASC Update 2015-15, “Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements.” ASC Update 2015-03 simplifies the presentation of debt issuances costs. Debt issuance costs related to a recognized debt liability will be presented on the balance sheet as a direct deduction from the debt liability, similar to the presentation of debt discounts. Previously under U.S. GAAP, debt issuance costs were reported on the balance sheet as assets. The costs will continue to be amortized to interest expense using the effective interest method. ASC Update 2015-03 was effective for public business entities' annual and interim reporting periods beginning after December 15, 2015, with earlier adoption permitted. The adoption of ASC Update 2015-03 did not have a material impact on the Corporation's consolidated financial statements. The Corporation prospectively adopted FASB issued ASC Update 2015-05, "Customer's Accounting for Fees Paid in a Cloud Computing Arrangement" effective January 1, 2016. ASC Update 2015-05 provides explicit guidance to determine when a customer's fees paid in a cloud computing arrangement is for the acquisition of software licenses, services, or both. ASC Update 2015-05 was effective for public business entities' annual and interim reporting periods beginning after December 15, 2015, with earlier adoption permitted. The adoption of ASC Update 2015-05 did not have a material impact on the Corporation's consolidated financial statements. Recently Issued Accounting Standards In May 2014, the FASB issued ASC Update 2014-09, "Revenue from Contracts with Customers." This standards update establishes a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle prescribed by this standards update is that an entity recognizes 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. The standard applies to all contracts with customers, except those that are within the scope of other topics in the FASB ASC. The standard also requires significantly expanded disclosures about revenue recognition. For public business entities, ASC Update 2014-09 is effective for interim and annual reporting periods beginning after December 15, 2017. Early application is not permitted. For the Corporation, this standards update is effective with its March 31, 2018 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2014-09 on its consolidated financial statements. In January 2016, the FASB issued ASC Update 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities." ASC Update 2016-01 provides guidance regarding the income statement impact of equity investments held by an entity and the recognition of changes in fair value of financial liabilities when the fair value option is elected. ASC Update 2016-01 is effective for public business entities' annual and interim reporting periods beginning after December 15, 2017, with earlier adoption permitted. The Corporation intends to adopt this standards update effective with its March 31, 2018 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2016-01 to have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASC Update 2016-02, "Leases." This standards update states that a lessee should recognize the assets and liabilities that arise from all leases with a term greater than 12 months. The core principle requires the lessee to recognize a liability to make lease payments and a "right-of-use" asset. The accounting applied by the lessor is relatively unchanged. The standards update also requires expanded qualitative and quantitative disclosures. For public business entities, ASC Update 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018. ASC Update 2016-02 mandates a modified retrospective transition for all entities. Early application is permitted. For the Corporation, this standards update is effective with its March 31, 2019 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2016-02 on its consolidated financial statements. In March 2016, the FASB issued ASC Update 2016-09, "Stock Compensation: Improvements to Employee Share-Based Payment Accounting." The purpose of this standards update is to simplify several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liability, and classification on the statement of cash flows. ASC Update 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016. Early application is permitted. For the Corporation, this standards update is effective with its March 31, 2017 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2016-09 on its consolidated financial statements.

Recently Adopted Accounting Standards

The Corporation adopted FASB ASC Update 2015-02, "Consolidation: Amendments to the Consolidation Analysis" effective January 1, 2016. ASC Update 2015-02 changed the way reporting enterprises evaluate whether: (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity ("VIE"), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. ASC Update 2015-02 was effective for public business entities' annual and interim reporting periods that began after December 15, 2015, with earlier adoption permitted. The adoption of ASC Update 2015-02 did not have a material impact on the Corporation's consolidated financial statements.

Effective January 1, 2016, the Corporation adopted FASB ASC Update 2015-03, "Interest - Imputation of Interest" and the updated ASC Update 2015-03 with the issuance of ASC Update 2015-15, “Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements.” ASC Update 2015-03 simplifies the presentation of debt issuances costs. Debt issuance costs related to a recognized debt liability will be presented on the balance sheet as a direct deduction from the debt liability, similar to the presentation of debt discounts. Previously under U.S. GAAP, debt issuance costs were reported on the balance sheet as assets. The costs will continue to be amortized to interest expense using the effective interest method. ASC Update 2015-03 was effective for public business entities' annual and interim reporting periods beginning after December 15, 2015, with earlier adoption permitted. The adoption of ASC Update 2015-03 did not have a material impact on the Corporation's consolidated financial statements.

The Corporation prospectively adopted FASB issued ASC Update 2015-05, "Customer's Accounting for Fees Paid in a Cloud Computing Arrangement" effective January 1, 2016. ASC Update 2015-05 provides explicit guidance to determine when a customer's fees paid in a cloud computing arrangement is for the acquisition of software licenses, services, or both. ASC Update 2015-05 was effective for public business entities' annual and interim reporting periods beginning after December 15, 2015, with earlier adoption permitted. The adoption of ASC Update 2015-05 did not have a material impact on the Corporation's consolidated financial statements.

Recently Issued Accounting Standards

In May 2014, the FASB issued ASC Update 2014-09, "Revenue from Contracts with Customers." This standards update establishes a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle prescribed by this standards update is that an entity recognizes 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. The standard applies to all contracts with customers, except those that are within the scope of other topics in the FASB ASC. The standard also requires significantly expanded disclosures about revenue recognition. For public business entities, ASC Update 2014-09 is effective for interim and annual reporting periods beginning after December 15, 2017. Early application is not permitted. For the Corporation, this standards update is effective with its March 31, 2018 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2014-09 on its consolidated financial statements.

In January 2016, the FASB issued ASC Update 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities." ASC Update 2016-01 provides guidance regarding the income statement impact of equity investments held by an entity and the recognition of changes in fair value of financial liabilities when the fair value option is elected. ASC Update 2016-01 is effective for public business entities' annual and interim reporting periods beginning after December 15, 2017, with earlier adoption permitted. The Corporation intends to adopt this standards update effective with its March 31, 2018 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2016-01 to have a material impact on its consolidated financial statements.

In February 2016, the FASB issued ASC Update 2016-02, "Leases." This standards update states that a lessee should recognize the assets and liabilities that arise from all leases with a term greater than 12 months. The core principle requires the lessee to recognize a liability to make lease payments and a "right-of-use" asset. The accounting applied by the lessor is relatively unchanged. The standards update also requires expanded qualitative and quantitative disclosures. For public business entities, ASC Update 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018. ASC Update 2016-02 mandates a modified retrospective transition for all entities. Early application is permitted. For the Corporation, this standards update is effective with its March 31, 2019 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2016-02 on its consolidated financial statements.

In March 2016, the FASB issued ASC Update 2016-09, "Stock Compensation: Improvements to Employee Share-Based Payment Accounting." The purpose of this standards update is to simplify several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liability, and classification on the statement of cash flows. ASC Update 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016. Early application is permitted. For the Corporation, this standards update is effective with its March 31, 2017 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2016-09 on its consolidated financial statements.