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Loans Receivable And Allowance For Loan Losses: Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Sep. 30, 2017
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | $ 720,627 | $ 702,383
Mortgage loans, one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 112,862 | 118,147
Mortgage loans, multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 55,157 | 58,607
Mortgage loans, commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 341,845 | 328,927
Mortgage loans, construction - custom and owner/builder |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 69,073 | 63,538
Mortgage loans, construction - speculative one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 3,968 | 4,639
Mortgage loans, construction – commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 17,788 | 11,016
Mortgage loans, construction - Multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 12,613 | 6,912
Mortgage loans, construction - Land development |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 1,484 |
Mortgage loans, land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 20,602 | 23,910
Consumer loans, home equity and second mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 38,124 | 38,420
Consumer loans, other |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 3,646 | 3,823
Commercial business loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 43,465 | 44,444
Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 701,314 | 682,391
Pass | Mortgage loans, one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 109,041 | 115,481
Pass | Mortgage loans, multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 55,157 | 56,857
Pass | Mortgage loans, commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 331,579 | 318,717
Pass | Mortgage loans, construction - custom and owner/builder |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 67,818 | 63,210
Pass | Mortgage loans, construction - speculative one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 3,968 | 4,639
Pass | Mortgage loans, construction – commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 17,788 | 11,016
Pass | Mortgage loans, construction - Multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 12,613 | 6,912
Pass | Mortgage loans, construction - Land development |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 1,484 |
Pass | Mortgage loans, land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 17,429 | 20,528
Pass | Consumer loans, home equity and second mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 37,623 | 37,828
Pass | Consumer loans, other |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 3,611 | 3,787
Pass | Commercial business loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 43,203 | 43,416
Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 9,892 | 8,956
Watch | Mortgage loans, one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 1,466 | 422
Watch | Mortgage loans, multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Watch | Mortgage loans, commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 5,993 | 6,059
Watch | Mortgage loans, construction - custom and owner/builder |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 1,255 | 328
Watch | Mortgage loans, construction - speculative one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Watch | Mortgage loans, construction – commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Watch | Mortgage loans, construction - Multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Watch | Mortgage loans, construction - Land development |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 |
Watch | Mortgage loans, land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 1,005 | 1,022
Watch | Consumer loans, home equity and second mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 147 | 152
Watch | Consumer loans, other |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Watch | Commercial business loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 26 | 973
Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 5,926 | 7,783
Special Mention | Mortgage loans, one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 591 | 644
Special Mention | Mortgage loans, multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 1,750
Special Mention | Mortgage loans, commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 3,507 | 3,540
Special Mention | Mortgage loans, construction - custom and owner/builder |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Special Mention | Mortgage loans, construction - speculative one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Special Mention | Mortgage loans, construction – commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Special Mention | Mortgage loans, construction - Multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Special Mention | Mortgage loans, construction - Land development |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 |
Special Mention | Mortgage loans, land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 1,773 | 1,794
Special Mention | Consumer loans, home equity and second mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Special Mention | Consumer loans, other |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Special Mention | Commercial business loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 55 | 55
Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 3,495 | 3,253
Substandard | Mortgage loans, one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 1,764 | 1,600
Substandard | Mortgage loans, multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Substandard | Mortgage loans, commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 766 | 611
Substandard | Mortgage loans, construction - custom and owner/builder |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Substandard | Mortgage loans, construction - speculative one-to-four family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Substandard | Mortgage loans, construction – commercial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Substandard | Mortgage loans, construction - Multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 | 0
Substandard | Mortgage loans, construction - Land development |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 0 |
Substandard | Mortgage loans, land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 395 | 566
Substandard | Consumer loans, home equity and second mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 354 | 440
Substandard | Consumer loans, other |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | 35 | 36
Substandard | Commercial business loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable | $ 181 | $ 0

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