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Deferred Revenue - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Dec. 18, 2015
USD ($)
a
Sep. 22, 2015
USD ($)
Sep. 19, 2014
USD ($)
Aug. 15, 2014
USD ($)
a
Dec. 31, 2015
USD ($)
a
Dec. 31, 2015
USD ($)
a
Dec. 31, 2014
USD ($)
a
Dec. 31, 2013
USD ($)
a
Dec. 31, 2015
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Deferred Revenue Arrangement [Line Items]                  
Received rent payment   $ 1,200,000 $ 1,900,000            
Term of oil exploration lease   8 years              
Lease period where payment recognized   12 months              
Lease expiration year   2016-09              
Area of a real estate property         160 160     1,700,000
Revenue from land sold           $ 22,500,000 $ 8,800,000 $ 3,000,000  
Land [Member]                  
Deferred Revenue Arrangement [Line Items]                  
Area of a real estate property | a         114.03 114.03 99.66 11.655  
Tomoka Town Center [Member]                  
Deferred Revenue Arrangement [Line Items]                  
Area of a real estate property | a         94.29 94.29      
Deferred Revenue, Revenue Recognized         $ 12,700,000        
Revenue from land sold         $ 19,400,000 $ 19,368,335      
Estimated Completion Date         2016-09        
Tomoka Town Center [Member] | Land [Member]                  
Deferred Revenue Arrangement [Line Items]                  
Area of a real estate property | a         94.29 94.29      
Property East of Interstate 95 [Member]                  
Deferred Revenue Arrangement [Line Items]                  
Deferred Revenue, Revenue Recognized           $ 597,000      
Revenue from land sold $ 2,400,000     $ 7,800,000   $ 7,800,000      
Estimated Completion Date           2015-02      
Property East of Interstate 95 [Member] | Land [Member]                  
Deferred Revenue Arrangement [Line Items]                  
Area of a real estate property | a 14.98     75.6 75.6 75.6