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Investments in and Advances to Unconsolidated Affiliates - Core Portfolio - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 04, 2021
Dec. 31, 2021
Mar. 31, 2022
Schedule of Equity Method Investments [Line Items]      
Investments carried at fair value or cost   $ 3,811 $ 3,811
Subscription Agreement [Member]      
Schedule of Equity Method Investments [Line Items]      
Investments carried at fair value or cost   7,500  
General Partners' Contributed Capital   5,400  
Increase in Investment   1,900  
Riverdale      
Schedule of Equity Method Investments [Line Items]      
Repayment related to mortgage $ 7,900    
Recognized gain in shares amount 600    
Proceeds from sale of property $ 10,500    
Venture Capital Gain (Loss), Net   $ 3,200