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LOANS AND LEASES, NET - Troubled Debt Restructured Loans (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) loan | Dec. 31, 2017 USD ($) loan | Sep. 30, 2018 USD ($)
Financing Receivable, Modifications [Line Items] |  |  |
Number of community banking loans | loan | 0 | 0 |
Loans modified in TDR |  | $ 0 |
Foreclosed real estate and repossessed assets | $ 31,548 |  | $ 31,638
Loans Receivable [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of community banking loans | loan | 2 | 0 |
Recorded investment | $ 100 |  |
Loans modified in TDR | $ 100 |  |
Financing Receivable [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of national lending contracts | loan | 1 |  |

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