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Fair Value Of Financial Instruments (Tables)
9 Months Ended
Sep. 30, 2011
Fair Value Of Financial Instruments [Abstract] 
Schedule Of Financial Instruments Carried At Fair Value
     Financial Instruments
Carried at Fair Value
 
     September 30,
2011
     December 31,
2010
 

Assets:

     

Cash and cash equivalents

   $ 270,456       $ 220,938