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	6 Months Ended
Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2017	Mar. 31, 2016
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	$ 3,170	$ 3,056	$ 3,100	$ 2,886	$ 3,056	$ 2,886
Charge-offs	(278)	(255)	(528)	(45)
Recoveries	18	39	27	81
Provision	403	330	291	178	733	469
Balance at the end of period	3,313	3,170	2,890	3,100	3,313	2,890
Construction [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	368	361	382	453	361	453
Charge-offs
Recoveries	3	3	1
Provision	(3)	4	(115)	(71)
Balance at the end of period	368	368	268	382	368	268
Commercial business [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	914	976	1,225	969	976	969
Charge-offs	(226)	(237)	(383)
Recoveries	1	1	26	1
Provision	323	174	125	255
Balance at the end of period	1,012	914	993	1,225	1,012	993
Home equity lines of credit [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	71	71	55	53	71	53
Charge-offs			(84)
Recoveries	14			80
Provision	(18)		100	(78)
Balance at the end of period	67	71	71	55	67	71
Commercial real estate [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	1,152	1,075	935	931	1,075	931
Charge-offs			(61)
Recoveries
Provision	(44)	77	(3)	4
Balance at the end of period	1,108	1,152	871	935	1,108	871
One-to four-family residential [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	524	542	386	395	542	395
Charge-offs	(52)	(18)		(45)
Recoveries		35
Provision	175	(35)	113	36
Balance at the end of period	647	524	499	386	647	499
Unallocated [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	134	22	108	79	22	79
Charge-offs
Recoveries
Provision	(36)	112	72	29
Balance at the end of period	98	134	180	108	98	180
Other [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	7	9	9	6	9	6
Charge-offs
Recoveries
Provision	6	(2)	(1)	3
Balance at the end of period	$ 13	$ 7	$ 8	$ 9	$ 13	$ 8

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

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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.

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- Definition

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

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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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