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Loans Receivable And Allowance For Loan Losses: Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | $ 9,533 | $ 9,565 | $ 9,530 | $ 9,553
Provision for (Recapture of) Loan Losses | 0 | 0 | 0 | 0
Charge- offs | (14) | (29) | (16) | (30)
Recoveries | 222 | 8 | 227 | 21
Allowance for loan losses, Ending Allowance | 9,741 | 9,544 | 9,741 | 9,544
Mortgage loans, one-to-four family |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 1,159 | 1,125 | 1,086 | 1,082
Provision for (Recapture of) Loan Losses | (72) | (65) | 1 | (22)
Charge- offs | 0 | 0 | 0 | 0
Recoveries | 67 | 0 | 67 | 0
Allowance for loan losses, Ending Allowance | 1,154 | 1,060 | 1,154 | 1,060
Mortgage loans, multi-family |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 449 | 430 | 433 | 447
Provision for (Recapture of) Loan Losses | 21 | (44) | 37 | (61)
Charge- offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Allowance for loan losses, Ending Allowance | 470 | 386 | 470 | 386
Mortgage loans, commercial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 4,239 | 4,093 | 4,248 | 4,184
Provision for (Recapture of) Loan Losses | (267) | 133 | (276) | 42
Charge- offs | 0 | (28) | 0 | (28)
Recoveries | 150 | 0 | 150 | 0
Allowance for loan losses, Ending Allowance | 4,122 | 4,198 | 4,122 | 4,198
Mortgage loans, construction - custom and owner/builder |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 643 | 788 | 671 | 699
Provision for (Recapture of) Loan Losses | 23 | (83) | (5) | 6
Charge- offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Allowance for loan losses, Ending Allowance | 666 | 705 | 666 | 705
Mortgage loans, construction - speculative one-to-four family |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 206 | 75 | 178 | 128
Provision for (Recapture of) Loan Losses | 43 | 21 | 71 | (40)
Charge- offs | 0 | 0 | 0 | 0
Recoveries | 0 | 3 | 0 | 11
Allowance for loan losses, Ending Allowance | 249 | 99 | 249 | 99
Mortgage loans, construction – commercial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 386 | 396 | 563 | 303
Provision for (Recapture of) Loan Losses | (2) | 49 | (179) | 142
Charge- offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Allowance for loan losses, Ending Allowance | 384 | 445 | 384 | 445
Mortgage loans, construction - Multi-family |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 209 | 228 | 135 | 173
Provision for (Recapture of) Loan Losses | 63 | 56 | 137 | 111
Charge- offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Allowance for loan losses, Ending Allowance | 272 | 284 | 272 | 284
Mortgage loans, construction - Land development |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 143 | 0 | 49 |
Provision for (Recapture of) Loan Losses | 101 | 48 | 195 | 48
Charge- offs | 0 |  | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Allowance for loan losses, Ending Allowance | 244 | 48 | 244 | 48
Mortgage loans, land |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 757 | 780 | 844 | 918
Provision for (Recapture of) Loan Losses | (112) | (94) | (203) | (236)
Charge- offs | 0 | 0 | 0 | 0
Recoveries | 4 | 5 | 8 | 9
Allowance for loan losses, Ending Allowance | 649 | 691 | 649 | 691
Consumer loans, home equity and second mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 666 | 958 | 649 | 983
Provision for (Recapture of) Loan Losses | 5 | (13) | 22 | (38)
Charge- offs | (4) | 0 | (4) | 0
Recoveries | 0 | 0 | 0 | 0
Allowance for loan losses, Ending Allowance | 667 | 945 | 667 | 945
Consumer loans, other |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 101 | 129 | 117 | 121
Provision for (Recapture of) Loan Losses | 11 | (8) | (4) | 0
Charge- offs | (1) | (1) | (3) | (2)
Recoveries | 1 | 0 | 2 | 1
Allowance for loan losses, Ending Allowance | 112 | 120 | 112 | 120
Commercial business loans |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Allowance for loan losses, Beginning Allowance | 575 | 563 | 557 | 515
Provision for (Recapture of) Loan Losses | 186 | 0 | 204 | 48
Charge- offs | (9) | 0 | (9) | 0
Recoveries | 0 | 0 | 0 | 0
Allowance for loan losses, Ending Allowance | $ 752 | $ 563 | $ 752 | $ 563

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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