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COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Allowance for credit losses on unfunded commitments	$ 22,517	[1]	$ 19,659	[1]	$ 21,025
Contingent obligations	11,300
Unfunded Loan Commitment
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Allowance for credit losses on unfunded commitments	$ 919		$ 0		$ 0
Minimum | Fixed Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Interest rate on fixed-rate commitments to make loans	5.75%
Maturity period of fixed-rate commitments to make loans (years)	7 years
Commitments period to make fixed-rate commercial draw notes (months)	3 months
Interest rate on fixed-rate commitments to make commercial draw notes (in hundredths)	2.79%
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments period to make real estate and home equity loans (days)	60 days
Off-balance sheet financial instruments, standard term	12 months
Maximum | Fixed Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Interest rate on fixed-rate commitments to make loans	8.13%
Maturity period of fixed-rate commitments to make loans (years)	30 years
Commitments period to make fixed-rate commercial draw notes (months)	24 months
Interest rate on fixed-rate commitments to make commercial draw notes (in hundredths)	8.17%
[1] Effective January 1, 2023, the allowance calculation is based upon Current Expected Credit loss methodology. Prior to January 1, 2023, the allowance calculation was based upon incurred loss methodology. Refer to Note 1 for further discussion.

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

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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-Topic 450
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-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

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