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Real Estate (Narrative) (Details) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Real Estate [Abstract]      
Accumulated depreciation and amortization on properties $ 32,031,000   $ 57,391,000
Real estate depreciation expense 4,788,000 $ 4,890,000  
Lease future minimum payments 2021 24,004,686    
Lease future minimum payments 2022 30,750,724    
Lease future minimum payments 2023 30,466,934    
Lease future minimum payments 2024 27,802,134    
Lease future minimum payments 2025 25,807,966    
Lease future minimum payments 2026 24,984,457    
Lease future minimum payments there after $ 476,939,991