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INVESTMENT SECURITIES (Summary of Maturities of Debt Securities and Mortgage-backed Securities Held to Maturity) (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized cost | $ 28,070 | $ 29,481
Gross Unrealized Gains | 778 | 293
Gross Unrealized Losses | (310) | (430)
Fair Value | 28,538 | 29,344
Obligations of U.S. government agencies Mortgage backed securities - residential [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized cost | 1,822 | 445
Gross Unrealized Gains | 19 |
Gross Unrealized Losses | (35) | (54)
Fair Value | 1,806 | 391
Obligations of U.S. government agencies Mortgage backed securities -commercial [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized cost | 793 | 842
Gross Unrealized Gains |  |
Gross Unrealized Losses | (8) | (6)
Fair Value | 785 | 836
Obligations of U.S. government-sponsored enterprises Mortgage-backed securities-residential [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized cost | 22,192 | 22,363
Gross Unrealized Gains | 759 | 276
Gross Unrealized Losses |  | (47)
Fair Value | 22,951 | 22,592
Private label mortgage-backed securities-residential [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized cost | 263 | 363
Gross Unrealized Gains |  | 7
Gross Unrealized Losses | (12) |
Fair Value | 251 | 370
Corporate securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized cost | 3,000 | 3,000
Gross Unrealized Gains |  |
Gross Unrealized Losses | (255) | (323)
Fair Value | $ 2,745 | 2,677
Obligations of U.S. government-sponsored enterprises Debt securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized cost |  | 2,468
Gross Unrealized Gains |  | 10
Gross Unrealized Losses |  |
Fair Value |  | $ 2,478

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- 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=121645371&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563 + Details
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