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LOANS AND CREDIT QUALITY - Loan Modifications, Financial Effect (Details)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Commercial loans | Commercial business | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average time added to life of loans (in years)	4 months 24 days
Commercial loans | Non-owner occupied CRE | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average time added to life of loans (in years)	3 months
Commercial loans | CRE construction | Significant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average time added to life of loans (in years)	2 years 9 months 18 days
Consumer loans | Single family | Significant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average percent of loan balances capitalized and added to term of loan	2.50%	2.60%
Consumer loans | Single family | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average time added to life of loans (in years)	1 year 10 months 24 days	14 years 2 months 12 days

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Financing Receivable, Loan Modifications, Weighted Average Percent Of Loan Capitalized

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

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Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Section 55
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