LOANS AND ALLOWANCE - Non-Accrual Loans by Loan Class (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	$ 46,576	$ 42,324
Non-Accrual Loans with no Allowance for Credit Losses	4,922	4,247
Commercial and industrial loans
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	11,051	3,292
Non-Accrual Loans with no Allowance for Credit Losses	856	481
Agricultural land, production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	64	54
Non-Accrual Loans with no Allowance for Credit Losses	0	0
Construction
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	0	12
Non-Accrual Loans with no Allowance for Credit Losses	0	0
Commercial real estate, non-owner occupied
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	16,550	19,374
Non-Accrual Loans with no Allowance for Credit Losses	1,830	280
Commercial real estate, owner occupied
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	2,926	3,550
Non-Accrual Loans with no Allowance for Credit Losses	2,236	2,784
Residential
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	14,154	13,685
Non-Accrual Loans with no Allowance for Credit Losses	0	702
Home equity
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	1,811	2,247
Non-Accrual Loans with no Allowance for Credit Losses	0	0
Individuals' loans for household and other personal expenditures
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	20	110
Non-Accrual Loans with no Allowance for Credit Losses	$ 0	$ 0