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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NATURE OF OPERATIONS (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
ft²
a
state
county
property
Nov. 26, 2019
USD ($)
Dec. 31, 2018
a
Description of business      
Number of real estate properties | property 34    
Gross leasable space | ft² 502,626    
Investment in PINE | $ $ 38,814,425    
Mitigation Bank      
Description of business      
Area of land owned 2,500    
Florida      
Description of business      
Subsurface area of portfolio of mineral interests 455,000    
Number of countries | county 20    
Commercial      
Description of business      
Number of real estate properties | property 34    
Number of states in which entity operates | state 11    
Gross leasable space | ft² 1,800,000    
Undeveloped land | Land JV      
Description of business      
Area of land held for sale 5,300    
Undeveloped Land in Daytona Beach, Florida, Along Interstate 95      
Description of business      
Area of land (in acres) 5,300   5,400
Alpine      
Description of business      
Investment in PINE | $ $ 38,800,000 $ 38,800,000  
Percentage of investment in PINE 22.30% 22.30%  
Stock split ratio 1