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Loans Receivable And Allowance For Loan Losses: Schedule 1 of Troubled debt restructured loans (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | $ 3,083 | $ 3,269
Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 2,876 | 2,903
Non-Accrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 207 | 366
Mortgage loans, one-to-four family |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 484 | 634
Mortgage loans, one-to-four family | Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 484 | 493
Mortgage loans, one-to-four family | Non-Accrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 0 | 141
Mortgage loans, commercial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 2,392 | 2,410
Mortgage loans, commercial | Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 2,392 | 2,410
Mortgage loans, commercial | Non-Accrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 0 | 0
Mortgage loans, land |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 132 |
Mortgage loans, land | Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 0 |
Mortgage loans, land | Non-Accrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 132 |
Consumer loans, home equity and second mortgage |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 75 | 82
Consumer loans, home equity and second mortgage | Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | 0 | 0
Consumer loans, home equity and second mortgage | Non-Accrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan | $ 75 | 82
Commercial business loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan |  | 143
Commercial business loans | Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan |  | 0
Commercial business loans | Non-Accrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Troubled debt restructured loan |  | $ 143

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