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Fair Value Of Financial Instruments
12 Months Ended
Dec. 31, 2011
Fair Value Of Financial Instruments [Abstract]  
Fair Value Of Financial Instruments
10. Fair Value of Financial Instruments

We have various assets and liabilities that are considered financial instruments. We estimate that the carrying value of cash and cash equivalents, and accounts payable and accrued expenses approximates their fair values. Included in accounts payable and accrued expenses are our interest rate swaps, which are recorded at fair value based on Level 2 observable market assumptions using standardized derivative pricing models. We estimate the fair value of our loans, interest, and other receivables by discounting the estimated future cash flows using the current rates at which similar receivables would be made to others with similar credit ratings and for the same remaining maturities. We determine the fair value of our exchangeable notes based on quotes from securities dealers and market makers. We estimate the fair value of our senior notes, revolving credit facilities, and term loans based on the present value of future payments, discounted at a rate which we consider appropriate for such debt.

The following table summarizes fair value information for our financial instruments: (amounts in thousands)

 

     December 31,
2011
    December 31,
2010
 

Asset (Liability)

   Book
Value
    Fair
Value
    Book
Value
    Fair
Value
 

Interest and rent receivables

   $ 29,862      $ 22,866      $ 26,176      $ 20,265   

Loans

     239,839        243,272        215,985        209,126   

Debt, net

     (689,849     (688,032     (369,970     (359,910