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Borrowings - Unsecured Management Company Revolver (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 17, 2021
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
May 04, 2020
May 03, 2020
Mar. 30, 2020
Line of Credit Facility [Line Items]                
Amortization of financing costs       $ 5,002 $ 5,082      
Revolving Credit Facility | Unsecured Management Company Revolver | Affiliates                
Line of Credit Facility [Line Items]                
Credit facility outstanding balance   $ 0   0        
Revolving Credit Facility | Unsecured Management Company Revolver | Credit Facility                
Line of Credit Facility [Line Items]                
Amortization of financing costs   1 $ 4 2 $ 10      
Revolving Credit Facility | Unsecured Management Company Revolver | Credit Facility | Affiliates                
Line of Credit Facility [Line Items]                
Interest rate 4.00%              
Maximum borrowing capacity           $ 50,000 $ 30,000 $ 30,000
Maximum amount of borrowings available   $ 50,000   $ 50,000