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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Sep. 30, 2020
Equity [Abstract] |
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) | The changes in accumulated other comprehensive income (loss) ("AOCI") by component during the years ended September 30, 2020, 2019 and 2018 are as follows (dollars in thousands):
| Changes in fair value of available for sale securities [1] |  | Changes in OTTI on held to maturity securities [1] |  | Total [1]
2020 |  |  |  |  |
Balance of AOCI at the beginning of period | $ | 90 |  |  | $ | (40) |  |  | $ | 50 |
Other comprehensive income (loss) | (3) |  |  | 14 |  |  | 11 |
Balance of AOCI at the end of period | $ | 87 |  |  | $ | (26) |  |  | $ | 61 |
2019 |  |  |  |  |
Balance of AOCI at the beginning of period | $ | (58) |  |  | $ | (71) |  |  | $ | (129) |
Other comprehensive income | 85 |  |  | 31 |  |  | 116 |
Adoption of ASU 2016-01 | $ | 63 |  |  | $ | — |  |  | $ | 63 |
Balance of AOCI at the end of period | $ | 90 |  |  | $ | (40) |  |  | $ | 50 |
2018 |  |  |  |  |
Balance of AOCI at the beginning of period | $ | (19) |  |  | $ | (105) |  |  | $ | (124) |
Other comprehensive income (loss) | (39) |  |  | 34 |  |  | (5) |
Balance of AOCI at the end of period | $ | (58) |  |  | $ | (71) |  |  | $ | (129) |
___________________ [1] All amounts are net of income taxes.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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