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REAL ESTATE OPERATIONS - Beachfront Venture and Daytona Beach (Details)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
a
Dec. 31, 2018
USD ($)
a
Land Parcel with Structures Beach Property    
Land and subsurface interests    
Area of land (in acres) | a   5
Acquisition of property   $ 2.0
Contiguous Parcels Beach Property    
Land and subsurface interests    
Area of land (in acres) | a 1  
Acquisition of property $ 2.1  
Daytona Beach Development    
Land and subsurface interests    
Raze and entitlement cost $ 1.5