LOANS (Financing receivables, non accrual status) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	$ 59,636
Nonaccrual Loans with No Allowance for Credit Losses	31,973
Total Nonaccrual Loans	91,609	$ 76,548
Accruing Loans Past Due 90+ Days	1,360
Commercial and industrial \| Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	11,630
Nonaccrual Loans with No Allowance for Credit Losses	9,812
Total Nonaccrual Loans	21,442	29,775
Accruing Loans Past Due 90+ Days	0
Commercial and industrial \| Owner occupied commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	20,860
Nonaccrual Loans with No Allowance for Credit Losses	4,725
Total Nonaccrual Loans	25,585	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	349
Nonaccrual Loans with No Allowance for Credit Losses	3,412
Total Nonaccrual Loans	3,761	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	1,298
Nonaccrual Loans with No Allowance for Credit Losses	75
Total Nonaccrual Loans	1,373	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	11,864
Nonaccrual Loans with No Allowance for Credit Losses	7,476
Total Nonaccrual Loans	19,340	20,543
Accruing Loans Past Due 90+ Days	83
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	9,468
Nonaccrual Loans with No Allowance for Credit Losses	6,116
Total Nonaccrual Loans	15,584	13,067
Accruing Loans Past Due 90+ Days	1,207
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with an Allowance for Credit Losses	4,167
Nonaccrual Loans with No Allowance for Credit Losses	357
Total Nonaccrual Loans	4,524	$ 3,495
Accruing Loans Past Due 90+ Days	$ 70

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