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Mortgage and Other Notes Receivable (Tables)
6 Months Ended
Jun. 30, 2011
Mortgage and Other Notes Receivable [Abstract]  
Rollforward allowance for credit losses
A rollforward of the allowance for credit losses for the six months ended June 30, 2011 is as follows:
 
Beginning Balance, January 1, 2011  $- 
     Additions in allowance charged to expense   1,500 
     Reduction for charges against allowance   (1,500)
Ending Balance, June 30, 2011  $-