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INVESTMENT SECURITIES (Summary of Maturities of Debt Securities and Mortgage-backed Securities Held to Maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 37,082	$ 51,368
Gross Unrealized Gains	6	472
Gross Unrealized Losses	(1,237)	(599)
Fair Value	35,851	51,241
Obligations of U.S. government agencies Mortgage backed securities - residential [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	610	3,466
Gross Unrealized Gains		123
Gross Unrealized Losses	(97)	(96)
Fair Value	513	3,493
Obligations of U.S. government agencies Mortgage backed securities -commercial [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	936	968
Gross Unrealized Gains
Gross Unrealized Losses	(11)	(10)
Fair Value	925	958
Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	27,654	39,016
Gross Unrealized Gains	6	349
Gross Unrealized Losses	(692)	(251)
Fair Value	26,968	39,114
Obligations of U.S. government-sponsored enterprises Debt securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	4,463	4,461
Gross Unrealized Gains
Gross Unrealized Losses	(83)	(24)
Fair Value	4,380	4,437
Private label mortgage-backed securities-residential [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	419	457
Gross Unrealized Gains
Gross Unrealized Losses	(1)	(2)
Fair Value	418	455
Corporate securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	3,000	3,000
Gross Unrealized Gains
Gross Unrealized Losses	(353)	(216)
Fair Value	$ 2,647	$ 2,784

X

- Definition

Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
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