LOANS, PAST-DUE, AND ACCRUING RESTRUCTURED LOANS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Financing receivables, non-accruals, past-due, and accruing restructured loans [Line Items]
Total non-accrual loans	$ 2,951	$ 2,965
Past-due 90 days or more and still accruing	149	0
Total non-accrual and past-due 90 days or more and still accruing	3,100	2,965
Accruing restructured loans	10,516	10,469
Total	$ 13,616	$ 13,434
Percentage of total non-accrual and past-due 90 days or more and still accruing to total loans	0.26%	0.35%
Percentage of total non-accrual, past-due 90 days or more and still accruing, and accruing restructured loans to total loans	1.14%	1.58%
Interest income	$ 187	$ 202
Commercial & industrial
Financing receivables, non-accruals, past-due, and accruing restructured loans [Line Items]
Total non-accrual loans	0	0
Past-due 90 days or more and still accruing	0	0
Commercial, secured by real estate
Financing receivables, non-accruals, past-due, and accruing restructured loans [Line Items]
Total non-accrual loans	1,767	2,183
Past-due 90 days or more and still accruing	0	0
Agricultural
Financing receivables, non-accruals, past-due, and accruing restructured loans [Line Items]
Total non-accrual loans	177	178
Past-due 90 days or more and still accruing	0	0
Residential real estate
Financing receivables, non-accruals, past-due, and accruing restructured loans [Line Items]
Total non-accrual loans	1,007	604
Past-due 90 days or more and still accruing	$ 149	$ 0