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Fair Value Of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2010
Fair Value Of Financial Instruments [Abstract]  
Summary Of Fair Value Information Of Financial Instruments
     December 31,
2010
    December 31,
2009
 

Asset (Liability)

   Book
Value
    Fair
Value
    Book
Value
    Fair
Value
 

Interest and rent receivables

   $ 26,176      $ 20,265      $ 19,845      $ 16,712   

Loans

     215,985        209,126        311,006        299,123   

Debt, net

     (369,970     (359,910     (576,678     (547,242