RECENT ACCOUNTING GUIDANCE	12 Months Ended
Dec. 31, 2012
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Guidance [Text Block]	RECENT ACCOUNTING GUIDANCE Recently Adopted Accounting Guidance On January 1, 2012, the Corporation adopted Accounting Standards Update ("ASU") 2011-05, "Comprehensive Income (Topic 220): Presentation of Comprehensive Income," as amended by ASU 2011-12, "Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05." This standard improves the comparability, consistency and transparency of financial reporting and increases the prominence of items reported in other comprehensive income. See the Consolidated Statements of Comprehensive Income and Note 18 for additional information. On January 1, 2012, the Corporation adopted ASU 2011-04, "Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS," which provides common requirements for measuring fair value and disclosing information about fair value measurements in accordance with U.S. GAAP and International Financial Reporting Standards ("IFRS"). See Note 10 for additional information about fair value measurements. On January 1, 2011, the Corporation adopted ASU 2009-13, “Revenue Recognition (Topic 605): Multiple-Deliverable Revenue Arrangements – a consensus of the FASB Emerging Issues Task Force.” This ASU amended the criteria for when to evaluate individual delivered items in a multiple deliverable arrangement and how to allocate consideration received. The adoption of this guidance did not have a material impact on the Corporation’s consolidated financial statements. Accounting Guidance Issued But Not Adopted as of December 31, 2012 In December 2011, the Financial Accounting Standards Board ("FASB") issued ASU 2011-11, "Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities," which requires entities to disclose both gross and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting agreement. The objective of the disclosure is to facilitate comparison between those entities that prepare their financial statements on the basis of U.S. GAAP and those entities that prepare their financial statements on the basis of IFRS. In January 2013, the FASB issued ASU 2013-01, "Balance Sheet (Topic 210): Clarifying the Scope of Disclosure about Offsetting Assets and Liabilities, " which clarified the scope of the offsetting disclosures of ASU 2011-11. Both ASUs are effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013. Retrospective presentation for all comparative periods presented is required. The Corporation is currently evaluating the impact of adopting this guidance. In February 2013, the FASB issued ASU 2013-02, "Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income," which requires entities to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail on these amounts. This ASU is effective prospectively for reporting periods beginning after December 15, 2012. The Corporation is currently evaluating the impact of adopting this guidance.

RECENT ACCOUNTING GUIDANCE

Recently Adopted Accounting Guidance

On January 1, 2012, the Corporation adopted Accounting Standards Update ("ASU") 2011-05, "Comprehensive Income (Topic 220): Presentation of Comprehensive Income," as amended by ASU 2011-12, "Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05." This standard improves the comparability, consistency and transparency of financial reporting and increases the prominence of items reported in other comprehensive income. See the Consolidated Statements of Comprehensive Income and Note 18 for additional information.

On January 1, 2012, the Corporation adopted ASU 2011-04, "Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS," which provides common requirements for measuring fair value and disclosing information about fair value measurements in accordance with U.S. GAAP and International Financial Reporting Standards ("IFRS"). See Note 10 for additional information about fair value measurements.

On January 1, 2011, the Corporation adopted ASU 2009-13, “Revenue Recognition (Topic 605): Multiple-Deliverable Revenue Arrangements – a consensus of the FASB Emerging Issues Task Force.” This ASU amended the criteria for when to evaluate individual delivered items in a multiple deliverable arrangement and how to allocate consideration received. The adoption of this guidance did not have a material impact on the Corporation’s consolidated financial statements.

Accounting Guidance Issued But Not Adopted as of December 31, 2012

In December 2011, the Financial Accounting Standards Board ("FASB") issued ASU 2011-11, "Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities," which requires entities to disclose both gross and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting agreement. The objective of the disclosure is to facilitate comparison between those entities that prepare their financial statements on the basis of U.S. GAAP and those entities that prepare their financial statements on the basis of IFRS. In January 2013, the FASB issued ASU 2013-01, "Balance Sheet (Topic 210): Clarifying the Scope of Disclosure about Offsetting Assets and Liabilities, " which clarified the scope of the offsetting disclosures of ASU 2011-11. Both ASUs are effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013. Retrospective presentation for all comparative periods presented is required. The Corporation is currently evaluating the impact of adopting this guidance.

In February 2013, the FASB issued ASU 2013-02, "Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income," which requires entities to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail on these amounts. This ASU is effective prospectively for reporting periods beginning after December 15, 2012. The Corporation is currently evaluating the impact of adopting this guidance.