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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Mar. 31, 2019
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The changes in accumulated other comprehensive loss ("AOCI") by component during the three and six months ended March 31, 2019 and 2018 are as follows (dollars in thousands):
| Three Months Ended March 31, 2019
| Changes in fair value of available for sale securities (1) |  | Changes in OTTI on held to maturity securities (1) |  | Total (1)
Balance of AOCI at the beginning of period | $ | (81 | ) |  | $ | (64 | ) |  | $ | (145 | )
Other comprehensive income | 84 |  |  | 16 |  |  | 100 |
Balance of AOCI at the end of period | $ | 3 |  |  | $ | (48 | ) |  | $ | (45 | )
| Six Months Ended March 31, 2019
| Changes in fair value of available for sale securities (1) |  | Changes in OTTI on held to maturity securities (1) |  | Total (1)
Balance of AOCI at the beginning of period | $ | (58 | ) |  | $ | (71 | ) |  | $ | (129 | )
Other comprehensive income | (2 | ) |  | 23 |  |  | 21 |
Adoption of ASU 2016-01 | 63 |  |  | — |  |  | 63 |
Balance of AOCI at the end of period | $ | 3 |  |  | $ | (48 | ) |  | $ | (45 | )
| Three Months Ended March 31, 2018
| Changes in fair value of available for sale securities (1) |  | Changes in OTTI on held to maturity securities (1) |  | Total (1)
Balance of AOCI at the beginning of period | $ | (26 | ) |  | $ | (110 | ) |  | $ | (136 | )
Other comprehensive income | (18 | ) |  | 22 |  |  | 4 |
Balance of AOCI at the end of period | $ | (44 | ) |  | $ | (88 | ) |  | $ | (132 | )
| Six Months Ended March 31, 2018
| Changes in fair value of available for sale securities (1) |  | Changes in OTTI on held to maturity securities (1) |  | Total (1)
Balance of AOCI at the beginning of period | $ | (19 | ) |  | $ | (105 | ) |  | $ | (124 | )
Other comprehensive income | (25 | ) |  | 17 |  |  | (8 | )
Balance of AOCI at the end of period | $ | (44 | ) |  | $ | (88 | ) |  | $ | (132 | )
__________________________ (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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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