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Loans Receivable and Allowance for Loan Losses: Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | $ 1,033,725 | $ 899,150
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 1,012,666 | 877,552
Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 11,546 | 13,731
Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 5,864 | 2,547
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 3,649 | 5,320
Mortgage loans, one-to-four family |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 118,580 | 132,661
Mortgage loans, one-to-four family | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 115,992 | 129,748
Mortgage loans, one-to-four family | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 1,369 | 296
Mortgage loans, one-to-four family | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 551 | 562
Mortgage loans, one-to-four family | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 668 | 2,055
Mortgage loans, multi-family |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 85,053 | 76,036
Mortgage loans, multi-family | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 85,053 | 76,036
Mortgage loans, multi-family | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, multi-family | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, multi-family | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 453,574 | 419,117
Mortgage loans, commercial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 441,037 | 405,165
Mortgage loans, commercial | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 7,712 | 11,944
Mortgage loans, commercial | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 3,447 | 683
Mortgage loans, commercial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 1,378 | 1,325
Mortgage loans, construction - custom and owner/builder |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 75,332 | 75,411
Mortgage loans, construction - custom and owner/builder | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 74,529 | 75,178
Mortgage loans, construction - custom and owner/builder | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 803 | 233
Mortgage loans, construction - custom and owner/builder | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - custom and owner/builder | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - speculative one-to-four family |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 7,108 | 10,779
Mortgage loans, construction - speculative one-to-four family | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 7,108 | 10,779
Mortgage loans, construction - speculative one-to-four family | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - speculative one-to-four family | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - speculative one-to-four family | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 20,927 | 24,051
Mortgage loans, construction - commercial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 19,525 | 24,051
Mortgage loans, construction - commercial | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - commercial | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 1,402 | 0
Mortgage loans, construction - commercial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - multi-family |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 10,832 | 19,256
Mortgage loans, construction - multi-family | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 10,832 | 19,256
Mortgage loans, construction - multi-family | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - multi-family | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans, construction - multi-family | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans - construction - land development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 4,739 | 1,803
Mortgage loans - construction - land development | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 4,701 | 1,659
Mortgage loans - construction - land development | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans - construction - land development | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Mortgage loans - construction - land development | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 38 | 144
Mortgage loans, land |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 25,571 | 30,770
Mortgage loans, land | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 23,290 | 28,390
Mortgage loans, land | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 1,518 | 952
Mortgage loans, land | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 370 | 1,217
Mortgage loans, land | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 393 | 211
Consumer loans, home equity and second mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 32,077 | 40,190
Consumer loans, home equity and second mortgage | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 31,344 | 39,364
Consumer loans, home equity and second mortgage | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 53 | 41
Consumer loans, home equity and second mortgage | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Consumer loans, home equity and second mortgage | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 680 | 785
Consumer loans, other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 3,572 | 4,312
Consumer loans, other | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 3,531 | 4,257
Consumer loans, other | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 32 | 33
Consumer loans, other | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 | 0
Consumer loans, other | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 9 | 22
Commercial business loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 69,540 | 64,764
Commercial business loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 68,904 | 63,669
Commercial business loans | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 59 | 232
Commercial business loans | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 94 | 85
Commercial business loans | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 483 | $ 778
SBA PPP Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 126,820 |
SBA PPP Loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 126,820 |
SBA PPP Loans | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 |
SBA PPP Loans | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | 0 |
SBA PPP Loans | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans receivable | $ 0 |

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