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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Activity in the Allowance for Loan Losses by Loan Category) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | $ 3,475 | $ 3,056
Charge-offs | (297) | (255)
Recoveries | 109 | 39
Provision | 250 | 330
Balance at the end of period | 3,537 | 3,170
One-to four-family residential [Member] |  |
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | 587 | 542
Charge-offs | (127) | (18)
Recoveries | 82 | 35
Provision | 21 | (35)
Balance at the end of period | 563 | 524
Commercial real estate [Member] |  |
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | 1,277 | 1,075
Charge-offs |  |
Recoveries | 23 |
Provision | (1) | 77
Balance at the end of period | 1,299 | 1,152
Construction [Member] |  |
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | 490 | 361
Charge-offs |  |
Recoveries | 3 | 3
Provision | (109) | 4
Balance at the end of period | 384 | 368
Home equity lines of credit [Member] |  |
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | 57 | 71
Charge-offs |  |
Recoveries |  |
Provision | 74 |
Balance at the end of period | 131 | 71
Commercial business [Member] |  |
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | 956 | 976
Charge-offs | (170) | (237)
Recoveries | 1 | 1
Provision | 265 | 174
Balance at the end of period | 1,052 | 914
Other [Member] |  |
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | 6 | 9
Charge-offs |  |
Recoveries |  |
Provision | (2) | (2)
Balance at the end of period | 4 | 7
Unallocated [Member] |  |
Activity in the allowance for loan losses by loan category: |  |
Balance at beginning of period | 102 | 22
Charge-offs |  |
Recoveries |  |
Provision | 2 | 112
Balance at the end of period | $ 104 | $ 134

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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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