Loans Receivable And Allowance For Loan Losses - Land and Commercial Business Loans (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($) contract	Jun. 30, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
End of Period Balance	$ 2,615	$ 2,604
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	$ 88	$ 96
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