LOANS - Total Loans Outstanding (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 4,916,534	$ 4,710,396
Gross loans	4,919,997	4,713,465
Less: Allowance for credit losses	(71,972)	(72,606)	$ (67,773)	$ (61,408)
Net deferred loan fees	(3,463)	(3,069)
Loans, net	4,844,562	4,637,790
Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	4,367,788	4,217,824
Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	552,209	495,641
Other consumer loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	96,022	88,075
Commercial and Industrial | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,420,764	1,493,049
Less: Allowance for credit losses	(30,338)	(35,290)	(30,595)	(28,333)
Commercial and Industrial | Working capital lines of credit loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	604,893	650,948
Commercial and Industrial | Non-working capital loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	815,871	842,101
Commercial real estate and multi-family residential loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,437,534	2,179,094
Commercial real estate and multi-family residential loans | Construction and land development loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	634,435	517,664
Commercial real estate and multi-family residential loans | Owner occupied loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	825,464	758,091
Commercial real estate and multi-family residential loans | Nonowner occupied loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	724,101	706,107
Commercial real estate and multi-family residential loans | Multi-family loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	253,534	197,232
Agri-business and Agricultural | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	388,764	432,088
Less: Allowance for credit losses	(4,150)	(4,429)	$ (5,034)	$ (3,043)
Agri-business and Agricultural | Loans secured by farmland | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	162,890	201,200
Agri-business and Agricultural | Loans for agricultural production | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	225,874	230,888
Other commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	120,567	113,341
Other commercial loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	120,726	113,593
Consumer 1-4 Family Mortgage | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	456,187	407,566
Consumer 1-4 Family Mortgage | Closed end first mortgage loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	258,103	212,742
Consumer 1-4 Family Mortgage | Open end and junior lien loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	189,663	175,575
Consumer 1-4 Family Mortgage | Residential construction and land development loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 8,421	$ 19,249