LOANS, MAJOR CLASSIFICATION OF LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	$ 1,243,726	$ 1,198,544
Deferred origination (fees) costs, net	(275)	79
Total loans	1,243,451	1,198,623
Less allowance for loan losses	4,045	4,046
Loans, net	1,239,406	1,194,577
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	78,306	77,740
Total loans	78,371	77,799
Commercial, secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	804,953	740,647
Total loans	804,154	740,125
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	322,533	349,127
Total loans	322,855	349,538
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	25,232	17,283
Total loans	25,355	17,399
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	11,509	13,297
Total loans	11,523	13,312
Other loans, including deposit overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	1,193	450
Total loans	$ 1,193	$ 450