LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses Activity (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	$ 47,972	$ 45,236	$ 45,236
Charge-offs	(277)	(14)	(4,426)
Recoveries	152	25
Provision for loan losses	338	1,747
Balance	48,185	46,994	47,972
Residential \| 1-4 family
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	12,101	11,532	11,532
Recoveries		1
Provision for loan losses	(66)	(25)
Balance	12,035	11,508	12,101
Residential \| Second mortgages and equity lines of credit
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	964	924	924
Recoveries	3	7
Provision for loan losses	(25)	36
Balance	942	967	964
Residential \| Residential real estate construction
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	418	280	280
Provision for loan losses	(87)	475
Balance	331	755	418
Commercial \| Commercial real estate
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	21,288	20,357	20,357
Charge-offs			(4,171)
Recoveries	100	1
Provision for loan losses	(125)	584
Balance	21,263	20,942	21,288
Commercial \| Commercial construction
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	4,824	4,645	4,645
Provision for loan losses	498	412
Balance	5,322	5,057	4,824
Commercial \| Commercial and industrial
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	8,107	7,236	7,236
Charge-offs	(228)	(7)	(166)
Recoveries	46
Provision for loan losses	138	255
Balance	8,063	7,484	8,107
Consumer loans
Activity in the allowance for loan losses and allocation of the allowance to loan segments
Balance	270	262	262
Charge-offs	(49)	(7)	(89)
Recoveries	3	16
Provision for loan losses	5	10
Balance	$ 229	$ 281	$ 270

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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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
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(11))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1

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