LOANS (Financing receivables, non accrual status) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	$ 35,576
Nonaccrual Loans with No Allowance for Credit Losses	43,464
Total Nonaccrual Loans	79,040	$ 76,548
Accruing Loans Past Due 90+ Days	1,681
Commercial and industrial \| Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	10,654
Nonaccrual Loans with No Allowance for Credit Losses	10,732
Total Nonaccrual Loans	21,386	29,775
Accruing Loans Past Due 90+ Days	431
Commercial and industrial \| Owner occupied commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	1,651
Nonaccrual Loans with No Allowance for Credit Losses	11,413
Total Nonaccrual Loans	13,064	6,938
Accruing Loans Past Due 90+ Days	0
Commercial and industrial \| Non-owner occupied commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	0
Nonaccrual Loans with No Allowance for Credit Losses	3,644
Total Nonaccrual Loans	3,644	1,563
Accruing Loans Past Due 90+ Days	0
Commercial and industrial \| Real Estate Construction
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	751
Nonaccrual Loans with No Allowance for Credit Losses	902
Total Nonaccrual Loans	1,653	1,167
Accruing Loans Past Due 90+ Days	0
Agricultural and agricultural real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	10,714
Nonaccrual Loans with No Allowance for Credit Losses	7,861
Total Nonaccrual Loans	18,575	20,543
Accruing Loans Past Due 90+ Days	0
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	8,237
Nonaccrual Loans with No Allowance for Credit Losses	8,289
Total Nonaccrual Loans	16,526	13,067
Accruing Loans Past Due 90+ Days	1,250
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	3,569
Nonaccrual Loans with No Allowance for Credit Losses	623
Total Nonaccrual Loans	4,192	$ 3,495
Accruing Loans Past Due 90+ Days	$ 0

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