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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Sep. 30, 2019
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, 2019, 2018 and 2017 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]
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 loss | (39 | ) |  | 34 |  |  | (5 | )
Balance of AOCI at the end of period | $ | (58 | ) |  | $ | (71 | ) |  | $ | (129 | )
2017 |  |  |  |  |
Balance of AOCI at the beginning of period | $ | 4 |  |  | $ | (179 | ) |  | $ | (175 | )
Other comprehensive income | (23 | ) |  | 74 |  |  | 51 |
Balance of AOCI at the end of period | $ | (19 | ) |  | $ | (105 | ) |  | $ | (124 | )
___________________ [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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