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Basis Of Presentation And Summary Of Significant Accounting Policies Basis of Presentation and Summary of Significant Accounting Policies (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2012
segments
Sep. 30, 2012
segments
Sep. 30, 2011
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Organization And Summary Of Significant Accounting Policies [Abstract]      
Number of Operating Segments 3 3 2