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Loans (Troubled debt restructurings, Rolling Twelve Months) (Details) | 12 Months Ended
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Sep. 30, 2020 USD ($) number | Sep. 30, 2019 USD ($) number
Mortgage Loan [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | number | 17 | 32
Recored Investment | $ | $ 2,394,000 | $ 4,065,000
Commercial Loan [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | number | 1 | 2
Recored Investment | $ | $ 84,000 | $ 350,000
Consumer Loan [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | number | 50 | 61
Recored Investment | $ | $ 627,000 | $ 710,000
Auto [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | number | 0 | 3
Recored Investment | $ | $ 0 | $ 51,000

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- Definition [2012] Number of financing receivables that have been modified by troubled debt restructurings for the past twelve months. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554 + Details
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