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LOANS RECEIVABLE - Schedule of Performance Loan (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | $ 143,305 | $ 104,492
Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 142,837 | 102,417
30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 22 | 0
60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 446 | 992
90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 1,083
Commercial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 134,585 | 103,610
Commercial loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 134,563 | 101,535
Commercial loans | 30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 22 | 0
Commercial loans | 60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 992
Commercial loans | 90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 1,083
Commercial loans | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 21,762 |
Commercial loans | Multi-family | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 21,762 |
Commercial loans | Multi-family | 30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 |
Commercial loans | Multi-family | 60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 |
Commercial loans | Multi-family | 90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 |
Commercial loans | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 32,560 | 23,449
Commercial loans | Commercial real estate | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 32,560 | 23,449
Commercial loans | Commercial real estate | 30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Commercial loans | Commercial real estate | 60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Commercial loans | Commercial real estate | 90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Commercial loans | Commercial & industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 57,431 | 61,074
Commercial loans | Commercial & industrial | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 57,409 | 58,999
Commercial loans | Commercial & industrial | 30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 22 | 0
Commercial loans | Commercial & industrial | 60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 992
Commercial loans | Commercial & industrial | 90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 1,083
Commercial loans | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 22,832 | 19,087
Commercial loans | Construction | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 22,832 | 19,087
Commercial loans | Construction | 30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Commercial loans | Construction | 60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Commercial loans | Construction | 90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 8,720 | 882
Consumer loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 8,274 | 882
Consumer loans | 30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Consumer loans | 60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 446 | 0
Consumer loans | 90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Consumer loans | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 8,720 | 882
Consumer loans | Single-family residential | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 8,274 | 882
Consumer loans | Single-family residential | 30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 0 | 0
Consumer loans | Single-family residential | 60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | 446 | 0
Consumer loans | Single-family residential | 90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified in period, amount | $ 0 | $ 0

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