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LOANS AND CREDIT QUALITY - Loan Modifications, by Payment Status (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Current
Financing Receivable, Modified [Line Items]
Loans modified	$ 1,565	$ 42,736
30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	419	700
90+ Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	22,258	518
Non-owner occupied CRE | Commercial loans | Current
Financing Receivable, Modified [Line Items]
Loans modified	0	16,440
Non-owner occupied CRE | Commercial loans | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	0	0
Non-owner occupied CRE | Commercial loans | 90+ Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	16,230	0
CRE construction | Commercial loans | Current
Financing Receivable, Modified [Line Items]
Loans modified		3,871
CRE construction | Commercial loans | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified		0
CRE construction | Commercial loans | 90+ Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified		0
Commercial business | Commercial loans | Current
Financing Receivable, Modified [Line Items]
Loans modified	811	14,335
Commercial business | Commercial loans | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	0	0
Commercial business | Commercial loans | 90+ Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	5,570	0
Single family | Consumer loans | Current
Financing Receivable, Modified [Line Items]
Loans modified	754	8,090
Single family | Consumer loans | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	419	700
Single family | Consumer loans | 90+ Days Past Due
Financing Receivable, Modified [Line Items]
Loans modified	$ 458	$ 518

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Amortized cost excluding accrued interest, of financing receivable 12 months after modification for debtor experiencing financial difficulty.

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