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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2011
Table Text Block Supplement [Abstract] 
Schedule Of Financial Assets And Liabilities At Fair Value
     Fair Value MeasurementsChanges in Fair Values for Items Measured at Fair Value Pursuant to Election of the Fair Value Option
                  
Description  Fair Value Estimate  Quoted Prices in Active Markets for Identical Assets (Level 1)  Significant Other Observable Inputs (Level 2)  Significant Unobservable Inputs (Level 3) Other Gains and (Losses)  Total Changes in Fair Values Included in Current-Period Earnings
                  
Securities carried at fair value * $12,148 $12,148 $ $$ (1,334) $ (1,334)
                  
(*) Represents investments that would otherwise be accounted for under the equity method of accounting.