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Recent Accounting Pronouncements	12 Months Ended
Recent Accounting Pronouncements	Dec. 31, 2011
New Accounting Pronouncement or Change in Accounting Principle, Retrospective Adjustments [Abstract]
Recent Accounting Pronouncements	16. RECENT ACCOUNTING PRONOUNCEMENTS In June 2011, the FASB issued an amendment to an existing accounting standard which requires companies to present net income and other comprehensive income in one continuous statement or in two separate, but consecutive, statements. In addition, in December 2011, the FASB issued an amendment to an existing accounting standard which defers the requirement to present components of reclassifications of other comprehensive income on the face of the income statement. We adopted both standards in 2011.