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LOANS AND LEASES, NET - Troubled Debt Restructured Loans (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
National Lending |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified in TDR, subsequent default | $ 3.9 | $ 0.2
Community Banking |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified in TDR, subsequent default | $ 3.3 | $ 0.9

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- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524 + Details
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