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OTHER COMPREHENSIVE INCOME (LOSS) (Schedule of Components of Other Comprehensive Income (Loss) and the Related Income Tax Effects) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Other comprehensive income (loss) |  |  |
Available-for-sale investments before tax |  | $ 33 | $ (311)
Tax benefit (expense) |  | (12) | 113
Available-for-sale investments after tax |  | 21 | (198)
Reclassification adjustment for net unrealized gains on securities reclassified available for sale |  | 104 |
Tax benefit (expense) |  | (32) |
Reclassification adjustment for net unrealized gains on securities reclassified available for sale net of tax |  | 72 |
Reclassification adjustment for net gains (losses) realized on available-for-sale investments before tax | [1],[2] | (107) |
Tax benefit (expense) | [1],[2] | 33 |
Reclassification adjustment for net gains (losses) realized on available-for-sale investments after tax | [1],[2] | (74) |
Other comprehensive income, net before tax |  | 30 | (311)
Tax benefit (expense), Total |  | (11) | 113
Other comprehensive (loss), net |  | $ 19 | $ (198)
[1] | Realized gains on securities transactions included in gains on sales of investment securities in the accompanying Consolidated Statements of Operations
[2] | Tax effect included in income tax expense in the accompanying Consolidated Statements of Operations

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- Definition Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities and unrealized holding gain (loss) related to transfers of securities into the available-for-sale classification and out of the held-to-maturity classification. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 + Details
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- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities and unrealized holding gain (loss) related to transfers of securities into the available-for-sale classification and out of the held-to-maturity classification. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 + Details
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