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LOANS AND CREDIT QUALITY - Loan Modifications, by Payment Status (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	$ 31,094	$ 20,480
30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	1,109	1,746
90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	342	1,627
Non-owner occupied CRE | Commercial loans | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	16,240
Non-owner occupied CRE | Commercial loans | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Non-owner occupied CRE | Commercial loans | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
CRE construction | Commercial loans | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	3,824
CRE construction | Commercial loans | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
CRE construction | Commercial loans | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0
Commercial business | Commercial loans | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	8,663	1,355
Commercial business | Commercial loans | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0
Commercial business | Commercial loans | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	0	0
Single family | Consumer loans | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	2,367	19,006
Single family | Consumer loans | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	1,109	1,746
Single family | Consumer loans | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified	$ 342	1,627
Home equity and other | Consumer loans | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified		119
Home equity and other | Consumer loans | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified		0
Home equity and other | Consumer loans | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified		$ 0

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Name Accounting Standards Codification
-Section 50
-Paragraph 42
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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