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Mortgages, Notes and Accrued Interest Receivable (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Mortgages, Notes and Accrued Interest Receivable [Abstract]      
Mortgages and notes receivable $ 16,942 $ 26,952  
Accrued interest receivables 177 858  
Unamortized discount 0 (40)  
Mortgages and notes receivable, net 17,119 27,770  
Mortgages and notes receivable, valuation reserve     $ 3,115