Recent Accounting Developments	3 Months Ended
Recent Accounting Developments	Mar. 31, 2012
Recent Accounting Developments [Abstract]
Recent Accounting Developments	2. Recent Accounting Developments Recently Issued In December 2011, the Financial Accounting Standards Board ("FASB") issued guidance requiring new disclosures for financial instruments and derivative instruments that are eligible for offset in the statement of financial position or subject to a master netting arrangement. The new guidance is effective for us beginning January 1, 2013 and is not expected to have a material impact on our financial position, results of operations or cash flows. Recently Adopted In May 2011, the FASB issued amended guidance and disclosure requirements for fair value measurements. The new guidance results in a consistent definition of fair value and common requirements for measurement of and disclosure about fair value between U.S. GAAP and International Financial Reporting Standards. The guidance became effective for us on January 1, 2012 and it did not have a material impact on our Unaudited Condensed Consolidated Financial Statements. In June 2011, the FASB issued guidance that modified how comprehensive income is presented in an entity's financial statements. The guidance issued requires an entity to present the total comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements and eliminates the option to present the components of other comprehensive income as part of the statement of equity. The revised financial statement presentation for comprehensive income became effective for us on January 1, 2012 and its adoption did not impact our Unaudited Condensed Consolidated Financial Statements. The guidance pertaining to reclassifying items out of accumulated other comprehensive income has been deferred and will be effective for us beginning January 1, 2013. The adoption of the deferred guidance is not expected to have a material impact on our financial position, results of operations or cash flows.

The entire disclosure for reporting accounting changes and error corrections. It includes the conveyance of information necessary for a user of the Company's financial information to understand all aspects and required disclosure information concerning all changes and error corrections reported in the Company's financial statements for the period.

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