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Fixed Assets (Tables)
9 Months Ended
Sep. 30, 2012
Fixed Assets [Abstract]  
Schedule Of Fixed Assets
    September 30,   December 31,
    2012   2011   2011
 
Fixed assets, at cost $ 201,665 $ 183,906 $ 189,084
Less accumulated depreciation and amortization   99,734   93,022   94,034
Fixed assets, net $ 101,931 $ 90,884 $ 95,050