FAIR VALUE (Quantitative Information about Level 3 fair value measurements) (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instruments	$ 0	$ 0
Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instruments	306	174
Discounted cash flows
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights		7,840
Modified appraised value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	2,677	8,401
Modified appraised value | Real Estate Construction
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	910	1,518
Modified appraised value | Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	6,147	3,788
Modified appraised value | Residential real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	2,254	1,607
Modified appraised value | Premises, furniture and equipment held for sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Premises, furniture and equipment held for sale	3,741	6,851
Interest rate lock commitments | Discounted cash flows
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instruments	$ 306	$ 174
Closing ratio | Discounted cash flows | Minimum | Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0	0
Closing ratio | Discounted cash flows | Maximum | Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0.99	0.99
Closing ratio | Discounted cash flows | Weighted Average | Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0.89	0.88
Appraisal discount | Modified appraised value | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Appraisal discount | Modified appraised value | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	10.00%	10.00%
Appraisal discount | Modified appraised value | Real Estate Construction | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Appraisal discount | Modified appraised value | Real Estate Construction | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	10.00%	10.00%
Appraisal discount | Modified appraised value | Premises, furniture and equipment held for sale | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Appraisal discount | Modified appraised value | Premises, furniture and equipment held for sale | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	10.00%	10.00%
Valuation discount | Discounted cash flows | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)		9.98%
Valuation discount | Discounted cash flows | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)		11.72%
Valuation discount | Discounted cash flows | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)		10.02%
Constant prepayment rate | Modified appraised value | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)		7.80%
Constant prepayment rate | Modified appraised value | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)		14.20%
Constant prepayment rate | Modified appraised value | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)		7.90%
Commercial and industrial | Modified appraised value | Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 9,234	$ 12,042
Commercial and industrial | Modified appraised value | Owner occupied commercial real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	7,339	7,556
Commercial and industrial | Modified appraised value | Non-owner occupied commercial real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 13,761	$ 11,371
Commercial and industrial | Appraisal discount | Modified appraised value | Commercial and industrial | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Commercial and industrial | Appraisal discount | Modified appraised value | Commercial and industrial | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	10.00%	10.00%
Commercial and industrial | Appraisal discount | Modified appraised value | Owner occupied commercial real estate | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Commercial and industrial | Appraisal discount | Modified appraised value | Owner occupied commercial real estate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	13.00%	10.00%
Commercial and industrial | Appraisal discount | Modified appraised value | Non-owner occupied commercial real estate | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Commercial and industrial | Appraisal discount | Modified appraised value | Non-owner occupied commercial real estate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	9.00%	10.00%
Agricultural and agricultural real estate | Appraisal discount | Modified appraised value | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Agricultural and agricultural real estate | Appraisal discount | Modified appraised value | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	15.00%	15.00%
Residential real estate | Appraisal discount | Modified appraised value | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	0.00%	0.00%
Residential real estate | Appraisal discount | Modified appraised value | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing assets, discount rate (as a percent)	10.00%	10.00%