Loans Receivable and Allowance for Loan Losses: COVID Modifications (Details) $ in Thousands	Sep. 30, 2022 USD ($) loan
Financing Receivable, Impaired [Line Items]
Number of mortgage loans modified | loan	1
Loans Receivable, Including Loans Held-For-Sale, Excluding Loans in Process and Deferred Fees, Gross, Mortgage Loans, Modified For COVID | $	$ 323
Loans Receivable, Ratio of Loan Category to Total Loans, Modified For COVID	100.00%
Mortgage loans, one-to-four family
Financing Receivable, Impaired [Line Items]
Number of mortgage loans modified | loan	1
Loans Receivable, Including Loans Held-For-Sale, Excluding Loans in Process and Deferred Fees, Gross, Mortgage Loans, Modified For COVID | $	$ 323
Loans Receivable, Ratio of Loan Category to Total Loans, Modified For COVID	100.00%