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Schedule of Participating Mortgage Loans (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]    
Total $ 708,755 $ 713,144
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]    
Schedule of Investments [Line Items]    
Total 680,848 685,859
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]    
Schedule of Investments [Line Items]    
Total $ 27,907 $ 27,285