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Loans Receivable And Allowance For Loan Losses - Land and Commercial Business Loans (Details)
$ in Thousands
6 Months Ended
Mar. 31, 2022
USD ($)
contract
Dec. 31, 2022
USD ($)
Sep. 30, 2022
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]      
End of Period Balance   $ 2,579 $ 2,615
Portfolio Segment      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of Contracts | contract 1    
Pre-Modification Outstanding Recorded Investment $ 136    
Post- Modification Outstanding Recorded Investment $ 145    
End of Period Balance     142
Mortgage loans, land      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
End of Period Balance   $ 63 88
Mortgage loans, land | Portfolio Segment      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of Contracts | contract 1    
Pre-Modification Outstanding Recorded Investment $ 136    
Post- Modification Outstanding Recorded Investment $ 145    
End of Period Balance     $ 142