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Loans Receivable And Allowance For Loan Losses: Schedule of Loans receivable and Loans held for sale (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Sep. 30, 2020
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans receivable | $ 1,111,705 | $ 1,134,283 |
Undisbursed portion of construction loans in process | 90,332 | 100,558 |
Deferred loan origination fees, net | 6,339 | 6,436 |
Allowance for loan losses | 13,469 | 13,414 |
Less: Loans in process, Deferred fees and Allowance for loan losses | 110,140 | 120,408 |
Loans receivable, net | $ 1,001,565 | $ 1,013,875 | [1]
Ratio of loan category to total loans receivable (percent) | 100.00% | 100.00% |
Mortgage loans excluded | $ 3,359 | $ 4,509 |
Total mortgage loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 908,566 | $ 902,274 |
Ratio of loan category to total loans receivable (percent) | 81.60% | 79.60% |
Mortgage loans, one-to-four family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 119,173 | $ 118,580 |
Ratio of loan category to total loans receivable (percent) | 10.70% | 10.50% |
Mortgage loans, multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 94,756 | $ 85,053 |
Ratio of loan category to total loans receivable (percent) | 8.50% | 7.50% |
Mortgage loans, commercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 458,889 | $ 453,574 |
Ratio of loan category to total loans receivable (percent) | 41.30% | 40.00% |
Mortgage loans, construction - custom and owner/builder |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 105,484 | $ 129,572 |
Ratio of loan category to total loans receivable (percent) | 9.50% | 11.40% |
Mortgage loans, construction - speculative one-to-four family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 18,038 | $ 14,592 |
Ratio of loan category to total loans receivable (percent) | 1.60% | 1.30% |
Mortgage loans, construction – commercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 43,879 | $ 33,144 |
Ratio of loan category to total loans receivable (percent) | 3.90% | 2.90% |
Mortgage loans, construction - Multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 45,624 | $ 34,476 |
Ratio of loan category to total loans receivable (percent) | 4.10% | 3.00% |
Mortgage loans, construction - Land development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 4,434 | $ 7,712 |
Ratio of loan category to total loans receivable (percent) | 0.40% | 0.70% |
Mortgage loans, land |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans | $ 18,289 | $ 25,571 |
Ratio of loan category to total loans receivable (percent) | 1.60% | 2.30% |
Total consumer loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Consumer loans | $ 34,616 | $ 35,649 |
Ratio of loan category to total loans receivable (percent) | 3.10% | 3.10% |
Consumer loans, home equity and second mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Consumer loans | $ 31,891 | $ 32,077 |
Ratio of loan category to total loans receivable (percent) | 2.90% | 2.80% |
Consumer loans, other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Consumer loans | $ 2,725 | $ 3,572 |
Ratio of loan category to total loans receivable (percent) | 0.20% | 0.30% |
Commercial business loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Commercial business loans | $ 72,890 | $ 69,540 |
Ratio of loan category to total loans receivable (percent) | 6.70% | 6.10% |
SBA PPP Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Commercial business loans | $ 95,633 | $ 126,820 |
Ratio of loan category to total loans receivable (percent) | 8.60% | 11.20% |
Total Commercial Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Commercial business loans | $ 168,523 | $ 196,360 |
Ratio of loan category to total loans receivable (percent) | 15.30% | 17.30% |
[1] | Derived from audited consolidated financial statements.

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