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FAIR VALUE - Level 3 Fair Value Measurement Activity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) investment	Dec. 31, 2022 USD ($) investment
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Number of investment transfers | investment	0	0
Level 3 | Investment securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of year	$ 27,193	$ 23,147
Unrealized gains (losses) included in OCI	358	(1,859)
Purchases	871	21,237
Net discount accretion	62	56
Principal payments and other	(631)	(10)
Sales	0	(3,053)
Calls	0	(12,154)
Balance, end of year	27,853	27,193
Level 3 | Investment securities | Collateralized Mortgage Obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
OTTI	0	(171)
Level 3 | Interest rate lock commitments with customers
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of year	35	353
Total gains (losses) included in earnings	20	(318)
Balance, end of year	$ 55	$ 35

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- Definition

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Calls

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other Than Temporary Impairment Losses Recognized in Earmings

+ References

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Number of Investment Transfers

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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