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Loans Receivable And Allowance For Loan Losses: Schedule of Loans receivable and Loans held for sale (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Sep. 30, 2015
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 4,831 | $ 6,040
Total loans receivable |  | 685,513 | 672,902
Undisbursed portion of construction loans in process |  | (47,596) | (53,457)
Deferred loan origination fees |  | (2,183) | (2,193)
Less: Allowance for loan losses |  | (9,889) | (9,924)
Total loans receivable, net |  | $ 625,845 | $ 607,328
Ratio of loan category to total loans receivable (percent) |  | 100.00% | 100.00%
Total mortgage loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Mortgage loans |  | $ 604,183 | $ 600,313
Ratio of loan category to total loans receivable (percent) |  | 88.10% | 89.30%
Mortgage loans, one-to-four family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 2,694 | $ 2,368
Mortgage loans | [1] | $ 118,507 | $ 119,715
Ratio of loan category to total loans receivable (percent) | [1] | 17.30% | 17.80%
Mortgage loans, multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 0 | $ 760
Mortgage loans |  | $ 47,980 | $ 52,322
Ratio of loan category to total loans receivable (percent) |  | 7.00% | 7.80%
Mortgage loans, commercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 1,184 | $ 1,016
Mortgage loans |  | $ 295,595 | $ 291,216
Ratio of loan category to total loans receivable (percent) |  | 43.10% | 43.30%
Mortgage loans, construction - custom and owner/builder |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 0 | $ 0
Mortgage loans |  | $ 67,861 | $ 62,954
Ratio of loan category to total loans receivable (percent) |  | 9.90% | 9.30%
Mortgage loans, construction - speculative one-to-four family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 0 | $ 0
Mortgage loans |  | $ 6,199 | $ 6,668
Ratio of loan category to total loans receivable (percent) |  | 0.90% | 1.00%
Mortgage loans, construction – commercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 0 | $ 0
Mortgage loans |  | $ 22,213 | $ 20,728
Ratio of loan category to total loans receivable (percent) |  | 3.20% | 3.10%
Mortgage loans, construction - Multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 0 | $ 0
Mortgage loans |  | $ 20,570 | $ 20,570
Ratio of loan category to total loans receivable (percent) |  | 3.00% | 3.10%
Mortgage loans, land |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 546 | $ 1,558
Mortgage loans |  | $ 25,258 | $ 26,140
Ratio of loan category to total loans receivable (percent) |  | 3.70% | 3.90%
Total consumer loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Consumer loans |  | $ 40,444 | $ 38,826
Ratio of loan category to total loans receivable (percent) |  | 5.90% | 5.70%
Consumer loans, home equity and second mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 300 | $ 303
Consumer loans |  | $ 36,057 | $ 34,157
Ratio of loan category to total loans receivable (percent) |  | 5.30% | 5.00%
Consumer loans, other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 34 | $ 35
Consumer loans |  | $ 4,387 | $ 4,669
Ratio of loan category to total loans receivable (percent) |  | 0.60% | 0.70%
[1] | Includes loans held for sale.

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