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INVESTMENT SECURITIES (Summary of Maturities of Debt Securities and Mortgage-backed Securities Held to Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 30, 2017
Held to maturity securities
Amortized cost	$ 34,510	$ 51,368
Gross Unrealized Gains	43	472
Gross Unrealized Losses	(766)	(599)
Fair Value	33,787	51,241
Obligations of U.S. government agencies Mortgage backed securities - residential [Member]
Held to maturity securities
Amortized cost	631	3,466
Gross Unrealized Gains		123
Gross Unrealized Losses	(97)	(96)
Fair Value	534	3,493
Obligations of U.S. government agencies Mortgage backed securities -commercial [Member]
Held to maturity securities
Amortized cost	951	968
Gross Unrealized Gains
Gross Unrealized Losses	(9)	(10)
Fair Value	942	958
Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member]
Held to maturity securities
Amortized cost	25,014	39,016
Gross Unrealized Gains	43	349
Gross Unrealized Losses	(334)	(251)
Fair Value	24,723	39,114
Obligations of U.S. government-sponsored enterprises Debt securities [Member]
Held to maturity securities
Amortized cost	4,462	4,461
Gross Unrealized Gains
Gross Unrealized Losses	(34)	(24)
Fair Value	4,428	4,437
Private label mortgage-backed securities-residential [Member]
Held to maturity securities
Amortized cost	452	457
Gross Unrealized Gains
Gross Unrealized Losses	(2)	(2)
Fair Value	450	455
Corporate securities [Member]
Held to maturity securities
Amortized cost	3,000	3,000
Gross Unrealized Gains
Gross Unrealized Losses	(290)	(216)
Fair Value	$ 2,710	$ 2,784

X

- Definition

Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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 investments in debt securities classified as held-to-maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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 investments in debt securities classified as held-to-maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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