LOANS - Total Loans Outstanding (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 4,710,396	$ 4,287,841
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process	4,713,465	4,291,105
Less: Allowance for credit losses	(72,606)	(67,773)	$ (61,408)	$ (50,652)
Net deferred loan fees	(3,069)	(3,264)
Loans, net	4,637,790	4,220,068
Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,217,824	3,863,630
Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	495,641	427,475
Other consumer loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	88,075	82,755
Commercial and Industrial | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,493,049	1,389,469
Less: Allowance for credit losses	(35,290)	(30,595)	(28,333)	(25,789)
Commercial and Industrial | Working capital lines of credit loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	650,948	652,861
Commercial and Industrial | Non-working capital loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	842,101	736,608
Commercial real estate and multi-family residential loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,179,094	1,954,846
Commercial real estate and multi-family residential loans | Construction and land development loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	517,664	379,813
Commercial real estate and multi-family residential loans | Owner occupied loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	758,091	739,371
Commercial real estate and multi-family residential loans | Nonowner occupied loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	706,107	588,458
Commercial real estate and multi-family residential loans | Multi-family loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	197,232	247,204
Agri-business and Agricultural | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	432,088	445,825
Less: Allowance for credit losses	(4,429)	(5,034)	$ (3,043)	$ (3,869)
Agri-business and Agricultural | Loans secured by farmland | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	201,200	206,331
Agri-business and Agricultural | Loans for agricultural production | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	230,888	239,494
Other commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	113,341	73,178
Other commercial loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	113,593	73,490
Consumer 1-4 Family Mortgage | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	407,566	344,720
Consumer 1-4 Family Mortgage | Closed end first mortgage loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	212,742	176,561
Consumer 1-4 Family Mortgage | Open end and junior lien loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	175,575	156,238
Consumer 1-4 Family Mortgage | Residential construction and land development loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 19,249	$ 11,921