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LOANS AND CREDIT QUALITY - Gross Charge-offs by Year and Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, Gross charge-offs	$ 0
Financing receivable, year two, Gross charge-offs	(6)
Financing receivable, year three, Gross charge-offs	(187)
Financing receivable, year four, Gross charge-offs	0
Financing receivable, year five, Gross charge-offs	(459)
Financing receivable, prior to year five, Gross charge-offs	0
Revolving	(31)
Revolving-term	0
Charge-offs	(683)	$ (44)
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Charge-offs	(50)	(33)
Consumer loans | Home equity and other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, Gross charge-offs	0
Financing receivable, year two, Gross charge-offs	(6)
Financing receivable, year three, Gross charge-offs	(13)
Financing receivable, year four, Gross charge-offs	0
Financing receivable, year five, Gross charge-offs	0
Financing receivable, prior to year five, Gross charge-offs	0
Revolving	(31)
Revolving-term	0
Charge-offs	(50)	(33)
Commercial loans | Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, year one, Gross charge-offs	0
Financing receivable, year two, Gross charge-offs	0
Financing receivable, year three, Gross charge-offs	(174)
Financing receivable, year four, Gross charge-offs	0
Financing receivable, year five, Gross charge-offs	(459)
Financing receivable, prior to year five, Gross charge-offs	0
Revolving	0
Revolving-term	0
Charge-offs	$ (633)	$ (11)

X

- Definition

Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Write Off

+ References

No definition available.

+ Details

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X

- Definition

Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff

+ References

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- Definition

Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff

+ References

No definition available.

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X

- Definition

Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years Before Current Fiscal Year, Write Off

+ References

No definition available.

+ Details

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- Definition

Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years Before Current Fiscal Year, Write Off

+ References

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+ Details

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- Definition

Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Write Off

+ References

No definition available.

+ Details

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X

- Definition

Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years Before Current Fiscal Year, Write Off

+ References

No definition available.

+ Details

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- Definition

Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Write Off

+ References

No definition available.

+ Details

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X

- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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