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Nature Of Operations And Consolidation Of Financial Statements (Policy)
12 Months Ended
Dec. 31, 2011
Nature Of Operations And Consolidation Of Financial Statements [Abstract]  
Use Of Estimates

Use of Estimates

Our accounting and reporting policies conform with U.S. Generally Accepted Accounting Principles ("U.S. GAAP"). In preparing the consolidated financial statements, we are required to make estimates and assumptions that impact the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates.

Reclassifications And Comparability

Reclassifications and Comparability

Certain reclassifications have been made to prior periods' financial statements in order to conform to the current period's presentation. As a result of our growth through acquisition and start-up activities and our care center mergers, our operating results may not be comparable for the periods that are presented.

During 2011 and 2010, management committed to exit 29 and 23 operating care centers, respectively. In accordance with applicable accounting guidance the results of operations for these care centers are presented in discontinued operations in our consolidated financial statements. See Note 4 for additional information regarding our discontinued operations.