LOANS RECEIVABLE, NET (Schedule of Activity in the Allowance for Loan Losses by Loan Category) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2017	Sep. 30, 2016
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	$ 3,056	$ 2,886
Charge-offs	(990)	(1,411)
Recoveries	66	215
Provision	1,343	1,366
Balance at the end of period	3,475	3,056
One-to four-family residential [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	542	395
Charge-offs	(295)	(133)
Recoveries	36
Provision	304	280
Balance at the end of period	587	542
Commercial real estate [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	1,075	931
Charge-offs	(23)	(61)
Recoveries		100
Provision	225	105
Balance at the end of period	1,277	1,075
Construction [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	361	453
Charge-offs
Recoveries	12	7
Provision	117	(99)
Balance at the end of period	490	361
Home equity lines of credit [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	71	53
Charge-offs		(98)
Recoveries	14	80
Provision	(28)	36
Balance at the end of period	57	71
Commercial business [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	976	969
Charge-offs	(672)	(1,119)
Recoveries	4	28
Provision	648	1,098
Balance at the end of period	956	976
Other [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	9	6
Charge-offs
Recoveries
Provision	(3)	3
Balance at the end of period	6	9
Unallocated [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	22	79
Charge-offs
Recoveries
Provision	80	(57)
Balance at the end of period	$ 102	$ 22

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

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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

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