Recently Issued Accounting Pronouncements	3 Months Ended
Mar. 31, 2012
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Fair Value Measurement – Topic 820 Accounting Standards Update No. 2011-04, “Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards (“ASU 2011-04”), was issued in May 2011. The amendments in ASU 2011-04 added language to clarify many of the requirements in GAAP for measuring fair value and for disclosing information about fair value measurements, as well as prescribed additional disclosures for Level 3 fair value measurements and financial instruments not carried at fair value. For many of the requirements, the Financial Accounting Standards Board (“FASB”) did not intend for ASU 2011-04 to result in a change in the application of the requirements in GAAP. The amendments required by ASU 2011-04 were to be applied prospectively and were effective for fiscal years and interim periods within those years, beginning after December 15, 2011. The Corporation adopted ASU 2011-04 in the first quarter of 2012, provided the additional disclosures required and made the election to use the exception permitted with respect to measuring counterparty credit risk on our interest rate derivative contracts. See Note 10 to the Consolidated Financial Statements for additional information. The adoption of ASU 2011-04 did not have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows. Comprehensive Income – Topic 220 Accounting Standards Update No. 2011-05, “Presentation of Comprehensive Income” (“ASU 2011-05”), was issued in June 2011. The FASB issued ASU 2011-05 to improve the comparability and transparency of financial reporting and to increase the prominence of items reported in other comprehensive income. ASU 2011-05 eliminates the option to present components of other comprehensive income as part of the statement of changes in stockholders’ equity. ASU 2011-05 requires that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. Accounting Standards Update No. 2011-12, “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” (“ASU 2011-12”), was issued in December 2011. ASU 2011-12 deferred the effective date of the requirement to present separate line items on the income statement for reclassification adjustments of items out of accumulated other comprehensive income into net income. All other requirements in ASU 2011-05 were not affected by this amendment. The provisions of ASU 2011-05, exclusive of the provisions pertaining to the reclassification adjustments deferred by ASU 2011-12, were to be applied retrospectively and were effective for fiscal years and interim periods within those years, beginning after December 15, 2011. The Corporation adopted these provisions of ASU 2011-05 in the first quarter of 2012 and elected to present comprehensive income in a separate financial statement, the Consolidated Statements of Comprehensive Income. The adoption of these provisions of ASU 2011-05 did not have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows. Intangibles-Goodwill and Other – Topic 350 Accounting Standards Update No. 2011-08, “Testing for Goodwill Impairment” (“ASU 2011-08”), was issued in September 2011. The objective of ASU 2011-08 was to simplify the testing of goodwill for impairment by allowing entities to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative test. There will no longer be a requirement to calculate the fair value of a reporting unit unless it is determined, based on a qualitative assessment, that it is more-likely-than-not that its fair value is less than its carrying amount. The more-likely-than-not threshold was defined as having a likelihood of more than 50 percent. The provisions of ASU 2011-08 are effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. The adoption of ASU 2011-08 did not have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows. Balance Sheet - Topic 210 Accounting Standards Update No. 2011-11, “Disclosures about Offsetting Assets and Liabilities” (“ASU 2011-11”), was issued in December 2011 and was intended to enhance current disclosure requirements on offsetting financial assets and liabilities. The requirements in ASU 2011-11 enables users to compare balance sheets prepared under U.S. GAAP and International Financial Reporting Standards (“IFRS”), which are subject to different offsetting models. The requirements affect all entities that have financial instruments that are either offset in the balance sheet or subject to an enforceable master netting arrangement or similar agreement. ASU 2011-11 will be effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The required disclosures shall be provided retrospectively for all comparative periods presented. The adoption of ASU 2011-11 is not expected to have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows.

Recently Issued Accounting Pronouncements

Fair Value Measurement – Topic 820

Accounting Standards Update No. 2011-04, “Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards (“ASU 2011-04”), was issued in May 2011. The amendments in ASU 2011-04 added language to clarify many of the requirements in GAAP for measuring fair value and for disclosing information about fair value measurements, as well as prescribed additional disclosures for Level 3 fair value measurements and financial instruments not carried at fair value. For many of the requirements, the Financial Accounting Standards Board (“FASB”) did not intend for ASU 2011-04 to result in a change in the application of the requirements in GAAP. The amendments required by ASU 2011-04 were to be applied prospectively and were effective for fiscal years and interim periods within those years, beginning after December 15, 2011. The Corporation adopted ASU 2011-04 in the first quarter of 2012, provided the additional disclosures required and made the election to use the exception permitted with respect to measuring counterparty credit risk on our interest rate derivative contracts. See Note 10 to the Consolidated Financial Statements for additional information. The adoption of ASU 2011-04 did not have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows.

Comprehensive Income – Topic 220

Accounting Standards Update No. 2011-05, “Presentation of Comprehensive Income” (“ASU 2011-05”), was issued in June 2011. The FASB issued ASU 2011-05 to improve the comparability and transparency of financial reporting and to increase the prominence of items reported in other comprehensive income. ASU 2011-05 eliminates the option to present components of other comprehensive income as part of the statement of changes in stockholders’ equity. ASU 2011-05 requires that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. Accounting Standards Update No. 2011-12, “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” (“ASU 2011-12”), was issued in December 2011. ASU 2011-12 deferred the effective date of the requirement to present separate line items on the income statement for reclassification adjustments of items out of accumulated other comprehensive income into net income. All other requirements in ASU 2011-05 were not affected by this amendment. The provisions of ASU 2011-05, exclusive of the provisions pertaining to the reclassification adjustments deferred by ASU 2011-12, were to be applied retrospectively and were effective for fiscal years and interim periods within those years, beginning after December 15, 2011. The Corporation adopted these provisions of ASU 2011-05 in the first quarter of 2012 and elected to present comprehensive income in a separate financial statement, the Consolidated Statements of Comprehensive Income. The adoption of these provisions of ASU 2011-05 did not have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows.

Intangibles-Goodwill and Other – Topic 350

Accounting Standards Update No. 2011-08, “Testing for Goodwill Impairment” (“ASU 2011-08”), was issued in September 2011. The objective of ASU 2011-08 was to simplify the testing of goodwill for impairment by allowing entities to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative test. There will no longer be a requirement to calculate the fair value of a reporting unit unless it is determined, based on a qualitative assessment, that it is more-likely-than-not that its fair value is less than its carrying amount. The more-likely-than-not threshold was defined as having a likelihood of more than 50 percent. The provisions of ASU 2011-08 are effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. The adoption of ASU 2011-08 did not have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows.

Balance Sheet - Topic 210

Accounting Standards Update No. 2011-11, “Disclosures about Offsetting Assets and Liabilities” (“ASU 2011-11”), was issued in December 2011 and was intended to enhance current disclosure requirements on offsetting financial assets and liabilities. The requirements in ASU 2011-11 enables users to compare balance sheets prepared under U.S. GAAP and International Financial Reporting Standards (“IFRS”), which are subject to different offsetting models. The requirements affect all entities that have financial instruments that are either offset in the balance sheet or subject to an enforceable master netting arrangement or similar agreement. ASU 2011-11 will be effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The required disclosures shall be provided retrospectively for all comparative periods presented. The adoption of ASU 2011-11 is not expected to have a material impact on the Corporation’s consolidated financial position, results of operations or cash flows.