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Loans Receivable And Allowance For Loan Losses: Past Due Status of Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Sep. 30, 2015
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | $ 4,006 | $ 7,168
Loans receivable, Non-Accrual | [1] | 2,955 | 6,040
Loans receivable, Current |  | 655,435 | 609,226
Loans receivable |  | 659,441 | 616,394
Mortgage loans, one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 1,334 | 2,793
Loans receivable, Non-Accrual | [1] | 1,236 | 2,368
Loans receivable, Current |  | 115,721 | 113,871
Loans receivable |  | 117,055 | 116,664
Mortgage loans, multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 760
Loans receivable, Non-Accrual | [1] | 0 | 760
Loans receivable, Current |  | 51,672 | 51,562
Loans receivable |  | 51,672 | 52,322
Mortgage loans, commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 808 | 1,016
Loans receivable, Non-Accrual | [1] | 808 | 1,016
Loans receivable, Current |  | 294,079 | 290,200
Loans receivable |  | 294,887 | 291,216
Mortgage loans, construction - custom and owner/builder |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 367 | 345
Loans receivable, Non-Accrual | [1] | 0 | 0
Loans receivable, Current |  | 50,484 | 35,847
Loans receivable |  | 50,851 | 36,192
Mortgage loans, construction - speculative one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Loans receivable, Non-Accrual | [1] | 0 | 0
Loans receivable, Current |  | 3,773 | 3,781
Loans receivable |  | 3,773 | 3,781
Mortgage loans, construction – commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Loans receivable, Non-Accrual | [1] | 0 | 0
Loans receivable, Current |  | 16,495 | 12,200
Loans receivable |  | 16,495 | 12,200
Mortgage loans, construction - Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Loans receivable, Non-Accrual | [1] | 0 | 0
Loans receivable, Current |  | 14,089 | 5,290
Loans receivable |  | 14,089 | 5,290
Mortgage loans, land |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 722 | 1,605
Loans receivable, Non-Accrual | [1] | 444 | 1,558
Loans receivable, Current |  | 23,354 | 24,535
Loans receivable |  | 24,076 | 26,140
Consumer loans, home equity and second mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 695 | 614
Loans receivable, Non-Accrual | [1] | 436 | 303
Loans receivable, Current |  | 37,787 | 33,543
Loans receivable |  | 38,482 | 34,157
Consumer loans, other |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 80 | 35
Loans receivable, Non-Accrual | [1] | 31 | 35
Loans receivable, Current |  | 4,410 | 4,634
Loans receivable |  | 4,490 | 4,669
Commercial business loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Loans receivable, Non-Accrual | [1] | 0 | 0
Loans receivable, Current |  | 43,571 | 33,763
Loans receivable |  | 43,571 | 33,763
30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 388 | 161
30 to 59 Days Past Due | Mortgage loans, one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
30 to 59 Days Past Due | Mortgage loans, multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
30 to 59 Days Past Due | Mortgage loans, commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
30 to 59 Days Past Due | Mortgage loans, construction - custom and owner/builder |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
30 to 59 Days Past Due | Mortgage loans, construction - speculative one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
30 to 59 Days Past Due | Mortgage loans, construction – commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
30 to 59 Days Past Due | Mortgage loans, construction - Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
30 to 59 Days Past Due | Mortgage loans, land |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 215 | 15
30 to 59 Days Past Due | Consumer loans, home equity and second mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 124 | 146
30 to 59 Days Past Due | Consumer loans, other |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 49 | 0
30 to 59 Days Past Due | Commercial business loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 528 | 816
60 to 89 Days Past Due | Mortgage loans, one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 98 | 425
60 to 89 Days Past Due | Mortgage loans, multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
60 to 89 Days Past Due | Mortgage loans, commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
60 to 89 Days Past Due | Mortgage loans, construction - custom and owner/builder |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 367 | 345
60 to 89 Days Past Due | Mortgage loans, construction - speculative one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
60 to 89 Days Past Due | Mortgage loans, construction – commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
60 to 89 Days Past Due | Mortgage loans, construction - Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
60 to 89 Days Past Due | Mortgage loans, land |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 63 | 32
60 to 89 Days Past Due | Consumer loans, home equity and second mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 14
60 to 89 Days Past Due | Consumer loans, other |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
60 to 89 Days Past Due | Commercial business loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 135 | 151
Past Due 90 Days or More and Still Accruing | Mortgage loans, one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Mortgage loans, multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Mortgage loans, commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - custom and owner/builder |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - speculative one-to-four family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction – commercial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Mortgage loans, land |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Consumer loans, home equity and second mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 135 | 151
Past Due 90 Days or More and Still Accruing | Consumer loans, other |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | 0 | 0
Past Due 90 Days or More and Still Accruing | Commercial business loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Loans receivable, Total Past Due |  | $ 0 | $ 0
[1] | Includes non-accrual loans past due 90 days or more and other loans classified as non-accrual.

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