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Recently Issued Accounting Pronouncements	3 Months Ended
	Mar. 31, 2012
Recently Issued Accounting Pronouncements [Abstract]
Recently Issued Accounting Pronouncements	13. Recently Issued Accounting Pronouncements In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs, and the International Accounting Standards Board issued International Financial Reporting Standard ("IFRS") 13, Fair Value Measurement (together, the new guidance). 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 IFRS. The new guidance changes some fair value measurement principles and disclosure requirements. The Company has adopted this ASU as of January 1, 2012. In June 2011, the FASB issued ASU No. 2011-05, Presentation of Comprehensive Income, which eliminates the current option to report other comprehensive income and its components in the statement of changes in equity and allows an entity to elect to present items of net income and other comprehensive income in one continuous statement or in two separate, but consecutive, statements. The Company has adopted this ASU as of January 1, 2012.

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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.

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