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Schedule IV - Mortgage Loans on Real Estate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Schedule IV - Mortgage Loans on Real Estate [Line Items]        
Federal Income Tax Basis $ 3,532      
Carrying amount of mortgages $ 3,532 $ 4,978 $ 6,423 $ 7,868
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Final Maturity Date Oct. 01, 2025      
Parking Garage, Developer Advances [Member]        
Schedule IV - Mortgage Loans on Real Estate [Line Items]        
Face Amount of Mortgage Loans $ 18,790      
Carrying amount of mortgages $ 3,532      
Minimum [Member] | Parking Garage, Developer Advances [Member]        
Schedule IV - Mortgage Loans on Real Estate [Line Items]        
Interest Rate on Mortgage Loans 7.00%