LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Past Due and Non-Accrual Loans (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2023
Summary of past due and non-accrual loans
Total loans	$ 4,776,685	$ 4,750,311
Loans on Non-accrual	12,160	17,513
Loans past due 90 days or more and still accruing	$ 0	0
Borrowers experiencing financial difficulty	0		0
Total Past Due
Summary of past due and non-accrual loans
Total loans	$ 13,051	19,603
30 to 59 Days
Summary of past due and non-accrual loans
Total loans	3,641	5,227
60 to 89 Days
Summary of past due and non-accrual loans
Total loans	2,559	2,783
90 Days or More
Summary of past due and non-accrual loans
Total loans	6,851	11,593
Residential
Summary of past due and non-accrual loans
Total loans	1,696,222	1,708,821
Residential | 1-4 family
Summary of past due and non-accrual loans
Total loans	1,507,959	1,513,554
Loans on Non-accrual	8,158	7,785
Residential | 1-4 family | Total Past Due
Summary of past due and non-accrual loans
Total loans	8,487	11,535
Residential | 1-4 family | 30 to 59 Days
Summary of past due and non-accrual loans
Total loans	2,596	4,704
Residential | 1-4 family | 60 to 89 Days
Summary of past due and non-accrual loans
Total loans	682	2,413
Residential | 1-4 family | 90 Days or More
Summary of past due and non-accrual loans
Total loans	5,209	4,418
Residential | Second mortgages and equity lines of credit
Summary of past due and non-accrual loans
Total loans	173,613	177,135
Loans on Non-accrual	708	473
Residential | Second mortgages and equity lines of credit | Total Past Due
Summary of past due and non-accrual loans
Total loans	934	351
Residential | Second mortgages and equity lines of credit | 30 to 59 Days
Summary of past due and non-accrual loans
Total loans	10	164
Residential | Second mortgages and equity lines of credit | 60 to 89 Days
Summary of past due and non-accrual loans
Total loans	608	130
Residential | Second mortgages and equity lines of credit | 90 Days or More
Summary of past due and non-accrual loans
Total loans	316	57
Commercial
Summary of past due and non-accrual loans
Total loans	3,061,698	3,018,561
Commercial | Commercial real estate
Summary of past due and non-accrual loans
Total loans	2,355,672	2,343,675
Loans on Non-accrual	1,496	7,416
Commercial | Commercial real estate | Total Past Due
Summary of past due and non-accrual loans
Total loans	1,496	5,751
Commercial | Commercial real estate | 30 to 59 Days
Summary of past due and non-accrual loans
Total loans	850
Commercial | Commercial real estate | 60 to 89 Days
Summary of past due and non-accrual loans
Total loans	641
Commercial | Commercial real estate | 90 Days or More
Summary of past due and non-accrual loans
Total loans	5	5,751
Commercial | Commercial construction
Summary of past due and non-accrual loans
Total loans	234,811	208,443
Commercial | Commercial and industrial
Summary of past due and non-accrual loans
Total loans	471,215	466,443
Loans on Non-accrual	1,744	1,791
Commercial | Commercial and industrial | Total Past Due
Summary of past due and non-accrual loans
Total loans	1,970	1,745
Commercial | Commercial and industrial | 30 to 59 Days
Summary of past due and non-accrual loans
Total loans	66	247
Commercial | Commercial and industrial | 60 to 89 Days
Summary of past due and non-accrual loans
Total loans	603	166
Commercial | Commercial and industrial | 90 Days or More
Summary of past due and non-accrual loans
Total loans	1,301	1,332
Consumer loans
Summary of past due and non-accrual loans
Total loans	19,301	22,036
Consumer loans | Auto
Summary of past due and non-accrual loans
Total loans	11,888	13,603
Loans on Non-accrual	27	4
Consumer loans | Auto | Total Past Due
Summary of past due and non-accrual loans
Total loans	68	169
Consumer loans | Auto | 30 to 59 Days
Summary of past due and non-accrual loans
Total loans	66	96
Consumer loans | Auto | 60 to 89 Days
Summary of past due and non-accrual loans
Total loans		69
Consumer loans | Auto | 90 Days or More
Summary of past due and non-accrual loans
Total loans	2	4
Consumer loans | Personal
Summary of past due and non-accrual loans
Total loans	7,413	8,433
Loans on Non-accrual	27	44
Consumer loans | Personal | Total Past Due
Summary of past due and non-accrual loans
Total loans	96	52
Consumer loans | Personal | 30 to 59 Days
Summary of past due and non-accrual loans
Total loans	53	16
Consumer loans | Personal | 60 to 89 Days
Summary of past due and non-accrual loans
Total loans	25	5
Consumer loans | Personal | 90 Days or More
Summary of past due and non-accrual loans
Total loans	$ 18	$ 31