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Mortgage and Other Notes Receivable	3 Months Ended
Mortgage and Other Notes Receivable	Mar. 31, 2012
Mortgage and Other Notes Receivable [Abstract]
Mortgage and Other Notes Receivable	Mortgage and Other Notes Receivable Each of the Company’s mortgage notes receivable is collateralized by either a first mortgage, a second mortgage or by an assignment of 100% of the partnership interests that own the real estate assets. Other notes receivable include amounts due from tenants or government sponsored districts and unsecured notes received from third parties as whole or partial consideration for property or investments. Interest rates on mortgage and other notes receivable ranged from 2.8% to 13.0%, with a weighted average interest rate of 8.84% and 8.76% at March 31, 2012 and December 31, 2011, respectively. Maturities of these notes receivable range from April 2012 to January 2047. As of March 31, 2012, the Company believes that its mortgage and other notes receivable balance of $33,688 is fully collectible. Subsequent to March 31, 2012, two of the Company's note receivables were repaid. See Note 15 for additional information.