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OTHER COMPREHENSIVE INCOME (LOSS) (Schedule of Components of Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2021 | Mar. 31, 2020
Other comprehensive income |  |  |  |  |  |  |
Available-for-sale investments before tax |  | $ (318) |  | $ 105 |  | $ (369) | $ 91
Tax benefit (expense) |  | 96 |  | (29) |  | 111 | (25)
Available-for-sale investments after tax |  | (222) |  | 76 |  | (258) | 66
Reclassification adjustment for net gains realized on available-for-sale investments before tax | [1],[2] |  |  | (68) |  |  | (68)
Tax benefit (expense) | [1],[2] |  |  | 19 |  |  | 19
Reclassification adjustment for net gains realized on available-for-sale investments after tax | [1],[2] |  |  | (49) |  |  | (49)
Other comprehensive income, net before tax |  | (318) |  | 37 |  | (369) | 23
Tax benefit (expense), Total |  | 96 |  | (10) |  | 111 | (6)
Other comprehensive income, net after tax |  | $ (222) | $ (36) | $ 27 | $ (10) | $ (258) | $ 17
[1] | Realized gains on securities transactions included in gains on sales of investment securities in the accompanying Consolidated Statements of Operation
[2] | Tax effect included in income tax expense in the accompanying Consolidated Statements of Operation

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- Definition Amount, after tax and before adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 + Details
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