ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Schedule of Aging of the Amortized Cost Basis in Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	$ 5,248,619	$ 5,117,948
Total Nonaccrual	18,725	56,417
Nonaccrual With No Allowance For Credit Loss	1,514	1,949
Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	5,228,906	5,057,232
30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	981	4,270
Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	7	29
Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	5,229,894	5,061,531
Total commercial loans | Commercial and industrial loans: | Working capital lines of credit loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	709,389	649,440
Total Nonaccrual	4,867	45,342
Nonaccrual With No Allowance For Credit Loss	444	594
Total commercial loans | Commercial and industrial loans: | Working capital lines of credit loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	704,522	603,016
Total commercial loans | Commercial and industrial loans: | Working capital lines of credit loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	1,082
Total commercial loans | Commercial and industrial loans: | Working capital lines of credit loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Commercial and industrial loans: | Working capital lines of credit loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	704,522	604,098
Total commercial loans | Commercial and industrial loans: | Non-working capital loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	807,978	800,758
Total Nonaccrual	7,556	7,515
Nonaccrual With No Allowance For Credit Loss	103	37
Total commercial loans | Commercial and industrial loans: | Non-working capital loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	800,376	792,577
Total commercial loans | Commercial and industrial loans: | Non-working capital loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	46	663
Total commercial loans | Commercial and industrial loans: | Non-working capital loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	3
Total commercial loans | Commercial and industrial loans: | Non-working capital loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	800,422	793,243
Total commercial loans | Commercial real estate and multi-family residential loans: | Construction and land development loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	573,019	565,975
Total Nonaccrual	0	0
Nonaccrual With No Allowance For Credit Loss	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Construction and land development loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	573,019	565,975
Total commercial loans | Commercial real estate and multi-family residential loans: | Construction and land development loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Construction and land development loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Construction and land development loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	573,019	565,975
Total commercial loans | Commercial real estate and multi-family residential loans: | Owner occupied loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	803,791	806,585
Total Nonaccrual	1,741	1,775
Nonaccrual With No Allowance For Credit Loss	0	318
Total commercial loans | Commercial real estate and multi-family residential loans: | Owner occupied loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	801,880	804,810
Total commercial loans | Commercial real estate and multi-family residential loans: | Owner occupied loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	170	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Owner occupied loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Owner occupied loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	802,050	804,810
Total commercial loans | Commercial real estate and multi-family residential loans: | Nonowner occupied loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	862,469	872,002
Total Nonaccrual	0	0
Nonaccrual With No Allowance For Credit Loss	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Nonowner occupied loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	862,469	872,002
Total commercial loans | Commercial real estate and multi-family residential loans: | Nonowner occupied loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Nonowner occupied loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Nonowner occupied loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	862,469	872,002
Total commercial loans | Commercial real estate and multi-family residential loans: | Multifamily loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	412,748	344,643
Total Nonaccrual	0	0
Nonaccrual With No Allowance For Credit Loss	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Multifamily loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	412,748	344,643
Total commercial loans | Commercial real estate and multi-family residential loans: | Multifamily loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Multifamily loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Commercial real estate and multi-family residential loans: | Multifamily loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	412,748	344,643
Total commercial loans | Agri-business and agricultural loans: | Loans secured by farmland
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	153,911	156,614
Total Nonaccrual	55	71
Nonaccrual With No Allowance For Credit Loss	0	0
Total commercial loans | Agri-business and agricultural loans: | Loans secured by farmland | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	153,856	156,543
Total commercial loans | Agri-business and agricultural loans: | Loans secured by farmland | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	0
Total commercial loans | Agri-business and agricultural loans: | Loans secured by farmland | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Agri-business and agricultural loans: | Loans secured by farmland | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	153,856	156,543
Total commercial loans | Agri-business and agricultural loans: | Loans for agricultural production
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	186,166	230,895
Total Nonaccrual	13	0
Nonaccrual With No Allowance For Credit Loss	13	0
Total commercial loans | Agri-business and agricultural loans: | Loans for agricultural production | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	186,153	230,895
Total commercial loans | Agri-business and agricultural loans: | Loans for agricultural production | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	0
Total commercial loans | Agri-business and agricultural loans: | Loans for agricultural production | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Agri-business and agricultural loans: | Loans for agricultural production | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	186,153	230,895
Total commercial loans | Other commercial loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	91,747	95,493
Total Nonaccrual	0	0
Nonaccrual With No Allowance For Credit Loss	0	0
Total commercial loans | Other commercial loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	91,747	95,493
Total commercial loans | Other commercial loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	0
Total commercial loans | Other commercial loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total commercial loans | Other commercial loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	91,747	95,493
Total consumer loans | Other consumer loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	112,172	103,767
Total Nonaccrual	367	275
Nonaccrual With No Allowance For Credit Loss	6	17
Total consumer loans | Other consumer loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	111,390	102,565
Total consumer loans | Other consumer loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	415	927
Total consumer loans | Other consumer loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total consumer loans | Other consumer loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	111,805	103,492
Total consumer loans | Consumer 1-4 family mortgage loans: | Closed end first mortgage loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	273,227	258,917
Total Nonaccrual	1,962	1,121
Nonaccrual With No Allowance For Credit Loss	793	665
Total consumer loans | Consumer 1-4 family mortgage loans: | Closed end first mortgage loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	271,197	256,486
Total consumer loans | Consumer 1-4 family mortgage loans: | Closed end first mortgage loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	61	1,284
Total consumer loans | Consumer 1-4 family mortgage loans: | Closed end first mortgage loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	7	26
Total consumer loans | Consumer 1-4 family mortgage loans: | Closed end first mortgage loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	271,265	257,796
Total consumer loans | Consumer 1-4 family mortgage loans: | Open end and junior lien loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	243,391	216,137
Total Nonaccrual	2,164	318
Nonaccrual With No Allowance For Credit Loss	155	318
Total consumer loans | Consumer 1-4 family mortgage loans: | Open end and junior lien loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	240,938	215,505
Total consumer loans | Consumer 1-4 family mortgage loans: | Open end and junior lien loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	289	314
Total consumer loans | Consumer 1-4 family mortgage loans: | Open end and junior lien loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total consumer loans | Consumer 1-4 family mortgage loans: | Open end and junior lien loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	241,227	215,819
Total consumer loans | Consumer 1-4 family mortgage loans: | Residential construction and land development loans
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	18,611	16,722
Total Nonaccrual	0	0
Nonaccrual With No Allowance For Credit Loss	0	0
Total consumer loans | Consumer 1-4 family mortgage loans: | Residential construction and land development loans | Loans Not Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	18,611	16,722
Total consumer loans | Consumer 1-4 family mortgage loans: | Residential construction and land development loans | 30-89 Days Past Due
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	0	0
Total consumer loans | Consumer 1-4 family mortgage loans: | Residential construction and land development loans | Greater than 89 Days Past Due and Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Greater than 89 Days Past Due and Accruing	0	0
Total consumer loans | Consumer 1-4 family mortgage loans: | Residential construction and land development loans | Total Accruing
Financing Receivable, Amortized Cost, Aging [Abstract]
Loans	$ 18,611	$ 16,722