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8. Discontinued Operations and Real Estate Interests Held for Sale (Detail) (USD $)
1 Months Ended 3 Months Ended 1 Months Ended
Feb. 25, 2013
Mar. 31, 2013
Mar. 31, 2013
Grove Isle Spa
Feb. 25, 2013
Promissory Notes and Accrued Interest Due from Individual
Mar. 29, 2013
Membership Interests Purchase Agreement
Mar. 29, 2013
Membership Interests Purchase Agreement
Hmg Courtland Properties, Inc.
Court Land Investments Inc
Mar. 29, 2013
Membership Interests Purchase Agreement
Montys Marina
Mar. 29, 2013
Membership Interests Purchase Agreement
Christoph Family Trust
Sales of Real Estate $ 24,400,000       $ 3,000,000      
Proceeds from Sale of Real Estate 23,400,000              
Nontrade Receivables       1,000,000        
Repayments of First Mortgage Bond 2,700,000              
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of Other than 10 or 20 Percent Adverse Change in Discount Rate, Percent 50.00%              
Real Estate Held-for-sale       100,000        
Remaining Interest Written Down     100,000          
Gain on sale of real estate interests 18,700,000       184,000      
Gain on sale of real estate interests, per share $ 18.71       $ 0.19      
Incentive fee due to the Adviser   $ 2,063,133            
Equity Method Investment, Ownership Percentage   95.00%       95.00% 50.00% 50.00%