ACQUIRED CREDIT IMPAIRED LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	$ 819,549	$ 770,701
Less allowance for loan losses	3,575	3,129
Loans, net	816,228	767,809
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	41,878	45,275
Commercial, secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	477,275	419,633
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	265,788	273,139
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	19,173	18,510
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	14,802	13,479
Other loans, including deposit overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	633	665
Financial Receivable Acquired Credit Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	9,346	12,668
Less allowance for loan losses	292	0
Loans, net	9,054	12,668
Financial Receivable Acquired Credit Impaired | Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	98	1,191
Financial Receivable Acquired Credit Impaired | Commercial, secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	6,305	7,877
Financial Receivable Acquired Credit Impaired | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	2,471	3,039
Financial Receivable Acquired Credit Impaired | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	17	27
Financial Receivable Acquired Credit Impaired | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	0	48
Financial Receivable Acquired Credit Impaired | Other loans, including deposit overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	$ 455	$ 486