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INVESTMENT IN UNCONSOLIDATED ENTITY - Narrative (Details)
12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 28, 2017
lease
The TIC Interest      
Schedule of Equity Method Investments [Line Items]      
Ownership (as a percent)     72.70%
Proceeds from distributions $ 683,000 $ 657,435  
REIT I      
Schedule of Equity Method Investments [Line Items]      
Ownership (as a percent)   4.80%  
Proceeds from distributions   $ 372,351  
Santa Clara      
Schedule of Equity Method Investments [Line Items]      
Number of operating leases with renewal options | lease     3
Operating leases renewal term     5 years
The TIC Interest | Hagg Lane II, LLC      
Schedule of Equity Method Investments [Line Items]      
Ownership Percentage by Noncontrolling Owners (as a percent)     23.40%
The TIC Interest | Hagg Lane III, LLC      
Schedule of Equity Method Investments [Line Items]      
Ownership Percentage by Noncontrolling Owners (as a percent)     3.90%
Santa Clara      
Schedule of Equity Method Investments [Line Items]      
Ownership Percentage by Noncontrolling Owners (as a percent)     27.30%