LOANS AND ALLOWANCE - Non-Accrual Loans by Loan Class (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	$ 43,508	$ 43,062
Non-Accrual Loans with no Allowance for Credit Losses	5,835	9,080
Commercial and industrial loans
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	2,945	7,598
Non-Accrual Loans with no Allowance for Credit Losses	1,354	263
Agricultural land, production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	57	631
Non-Accrual Loans with no Allowance for Credit Losses	0	524
Construction
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	0	685
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	20,189	23,029
Non-Accrual Loans with no Allowance for Credit Losses	288	6,133
Commercial real estate, owner occupied
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	4,997	411
Non-Accrual Loans with no Allowance for Credit Losses	3,471	0
Residential
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	10,703	9,153
Non-Accrual Loans with no Allowance for Credit Losses	722	2,160
Home equity
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	4,607	1,552
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	10	3
Non-Accrual Loans with no Allowance for Credit Losses	$ 0	$ 0