FAIR VALUE (Quantitative Information About Level 3 Fair Value Measurements) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Interest rate lock commitments | Recurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	$ 1,827	$ 681
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for sale	0	0
Interest rate lock commitments	0	0
Level 3 | Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	1,827	637
Level 3 | Interest rate lock commitments | Recurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	1,827	681
Valuation Technique, Discounted Cash Flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights	$ 5,189	5,621
Valuation Technique, Discounted Cash Flow | Level 3 | Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments		$ 681
Valuation Technique, Discounted Cash Flow | Level 3 | Interest rate lock commitments | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input		0
Valuation Technique, Discounted Cash Flow | Level 3 | Interest rate lock commitments | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input		0.99
Valuation Technique, Discounted Cash Flow | Level 3 | Interest rate lock commitments | Measurement Input, Closing Ratio | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0.86	0.90
Valuation Technique, Discounted Cash Flow | Level 3 | Interest rate lock commitments | Measurement Input, Closing Ratio | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0
Valuation Technique, Discounted Cash Flow | Level 3 | Interest rate lock commitments | Measurement Input, Closing Ratio | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0.99
Valuation Technique, Modified Appraised Value | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	$ 6,624	$ 6,914
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Appraised Value | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Appraised Value | Minimum | Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Appraised Value | Minimum | Residential real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Appraised Value | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	10.00%	10.00%
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Appraised Value | Maximum | Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		15.00%
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Appraised Value | Maximum | Residential real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		25.00%
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Discount Rate | Minimum | Consumer
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Measurement Input, Discount Rate | Maximum | Consumer
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		10.00%
Valuation Technique, Modified Appraised Value | Level 3 | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 11,256	$ 15,173
Valuation Technique, Modified Appraised Value | Level 3 | Commercial and industrial | Measurement Input, Appraised Value | Minimum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Commercial and industrial | Measurement Input, Appraised Value | Maximum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	8.00%	25.00%
Valuation Technique, Modified Appraised Value | Level 3 | Owner occupied commercial real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 5,874	$ 1,352
Valuation Technique, Modified Appraised Value | Level 3 | Owner occupied commercial real estate | Measurement Input, Appraised Value | Minimum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Owner occupied commercial real estate | Measurement Input, Appraised Value | Maximum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	12.00%	14.00%
Valuation Technique, Modified Appraised Value | Level 3 | Non-owner occupied commercial real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 4,907	$ 1,305
Valuation Technique, Modified Appraised Value | Level 3 | Non-owner occupied commercial real estate | Measurement Input, Appraised Value | Minimum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Non-owner occupied commercial real estate | Measurement Input, Appraised Value | Maximum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	10.00%	14.00%
Valuation Technique, Modified Appraised Value | Level 3 | Real estate construction
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans		$ 0
Valuation Technique, Modified Appraised Value | Level 3 | Real estate construction | Measurement Input, Appraised Value | Minimum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Real estate construction | Measurement Input, Appraised Value | Maximum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		14.00%
Valuation Technique, Modified Appraised Value | Level 3 | Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 12,451	$ 12,623
Valuation Technique, Modified Appraised Value | Level 3 | Agricultural and agricultural real estate | Measurement Input, Appraised Value | Minimum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Agricultural and agricultural real estate | Measurement Input, Appraised Value | Maximum | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	10.00%
Valuation Technique, Modified Appraised Value | Level 3 | Residential real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans		4,978
Valuation Technique, Modified Appraised Value | Level 3 | Consumer
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans		$ 1,033
Valuation Technique, Modified Appraised Value | Level 3 | Premises, Furniture and Equipment Held for Sale | Measurement Input, Appraised Value | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value | Level 3 | Premises, Furniture and Equipment Held for Sale | Measurement Input, Appraised Value | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	10.00%	10.00%
Valuation Technique, Modified Appraised Value | Level 3 | Recurring Basis | Premises, Furniture and Equipment Held for Sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Premises, furniture and equipment held for sale	$ 6,499	$ 2,967
Interest rate lock commitments | Valuation Technique, Discounted Cash Flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	$ 1,827