Annual report pursuant to Section 13 and 15(d)

SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Details)

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SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Encumbrances $ 0        
Initial cost to company, land 210,000        
Initial cost to company, building & fixtures 1,188,000        
Costs capitalized subsequent to acquisition, improvements 128,026        
Gross amount carried at close of period, land 210,000        
Gross amount carried at close of period, building & fixtures 1,316,026        
Gross amount carried at close of period, total 1,526,026   $ 71,770,177 $ 485,037,215 $ 485,368,450
Accumulated Depreciation 258,207   $ 6,832,167 $ 105,825,816 $ 87,154,095
Investment in Real Estate, net, at 12/31/21 1,267,819        
United Property Systems          
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Encumbrances 0        
Initial cost to company, land 210,000        
Initial cost to company, building & fixtures 1,188,000        
Costs capitalized subsequent to acquisition, improvements 128,026        
Gross amount carried at close of period, land 210,000        
Gross amount carried at close of period, building & fixtures 1,316,026        
Gross amount carried at close of period, total 1,526,026        
Accumulated Depreciation 258,207        
Investment in Real Estate, net, at 12/31/21 $ 1,267,819        
Life on which depreciation in latest income statement is computed 40 years        
GIS          
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Gross amount carried at close of period, total   $ 183,000,000      
Accumulated Depreciation   $ 42,700,000