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Employee Stock Ownership and 401(k) Plan (Tables) | 12 Months Ended
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Sep. 30, 2017
Retirement Benefits [Abstract] |
Schedule of Shares Held by the ESOP | Shares held by the ESOP as of September 30, 2017, 2016 and 2015 were classified as follows:
| 2017 |  |  | 2016 |  |  | 2015 |
Unallocated shares | 52,905 |  |  | 88,171 |  |  | 123,436 |
Shares released for allocation | 489,665 |  |  | 535,927 |  |  | 554,745 |
Total ESOP shares | 542,570 |  |  | 624,098 |  |  | 678,181 |

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- Definition Tabular disclosure of the details pertaining to each employee stock ownership plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929 + Details
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