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SEGMENTS (Capital Expenditures) (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Abstract]        
Acquisition of operating properties $ 3,573,743 $ 0 $ 13,037,562 $ 17,326,915
Capital expenditures and tenant improvements 889,673 2,696,422 6,393,711 3,359,283
Total real estate investments 4,463,416 2,696,422 19,431,273 20,686,198
Industrial Office Properties        
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Abstract]        
Capital expenditures and tenant improvements 881,497 2,696,422 6,373,464 3,340,023
Model Home properties        
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Abstract]        
Acquisition of operating properties 3,573,743 0 13,037,562 17,326,915
Retail Use Properties        
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Abstract]        
Capital expenditures and tenant improvements $ 8,176 $ 0 $ 20,247 $ 19,260