LOANS, MAJOR CLASSIFICATION OF LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	$ 848,769	$ 819,549
Deferred origination costs, net	291	254
Total loans	849,060	819,803
Less allowance for loan losses	3,403	3,575
Loans, net	845,657	816,228
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	36,057	41,878
Total loans	36,103	41,901
Commercial, secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	527,947	477,275
Total loans	527,596	476,944
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	251,582	265,788
Total loans	252,049	266,255
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	17,450	19,173
Total loans	17,563	19,261
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	15,194	14,802
Total loans	15,210	14,809
Other loans, including deposit overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, including deferred net origination cost	539	633
Total loans	$ 539	$ 633