LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 12,232	$ 7,778
Loans Past Due 90 Days or More and Still Accruing	18	1,454
Past Due	18,479	15,090
Loans Not Past Due	1,150,929	1,106,633
Total ending loans balance	1,171,503	1,124,354
30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	9,793	5,270
60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,012	5,147
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	7,674	4,673
Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	193,700	166,820
Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	507,700	453,719
Residential mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,610	3,615
Loans Past Due 90 Days or More and Still Accruing	0	0
Past Due	5,411	5,021
Loans Not Past Due	190,555	192,016
Total ending loans balance	196,236	197,287
Residential mortgages | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,983	2,327
Residential mortgages | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	725	1,161
Residential mortgages | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,703	1,533
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	273,867	306,528
Commercial and industrial | Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	13	312
Loans Past Due 90 Days or More and Still Accruing	3	0
Past Due	413	845
Loans Not Past Due	192,248	164,332
Total ending loans balance	192,661	165,797
Commercial and industrial | Commercial, and Agricultural | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	398	551
Commercial and industrial | Commercial, and Agricultural | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	3	257
Commercial and industrial | Commercial, and Agricultural | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	12	37
Agricultural | Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Loans Past Due 90 Days or More and Still Accruing	0	0
Past Due	0	0
Loans Not Past Due	1,039	1,023
Total ending loans balance	1,039	1,023
Agricultural | Commercial, and Agricultural | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Agricultural | Commercial, and Agricultural | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Agricultural | Commercial, and Agricultural | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction Loans | Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	63	150
Loans Past Due 90 Days or More and Still Accruing	0	1,446
Past Due	0	1,446
Loans Not Past Due	41,231	53,521
Total ending loans balance	41,231	54,967
Construction Loans | Commercial mortgages: | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction Loans | Commercial mortgages: | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction Loans | Commercial mortgages: | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	1,446
Commercial mortgages | Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	7,203	2,831
Loans Past Due 90 Days or More and Still Accruing	0	0
Past Due	9,635	4,587
Loans Not Past Due	455,009	392,404
Total ending loans balance	466,469
Commercial mortgages | Commercial mortgages: | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,197	276
Commercial mortgages | Commercial mortgages: | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	199	3,151
Commercial mortgages | Commercial mortgages: | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	5,239	1,160
Credit cards
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	1,482	1,654
Credit cards | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Loans Past Due 90 Days or More and Still Accruing	15	8
Past Due	49	13
Loans Not Past Due	1,433	1,641
Total ending loans balance	1,482	1,654
Credit cards | Consumer Loans | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	30	2
Credit cards | Consumer Loans | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4	3
Credit cards | Consumer Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	15	8
Home Equity Loan | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	758	515
Loans Past Due 90 Days or More and Still Accruing	0	0
Past Due	549	1,019
Loans Not Past Due	101,428	98,572
Total ending loans balance	101,977	99,591
Home Equity Loan | Consumer Loans | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	233	635
Home Equity Loan | Consumer Loans | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	77	217
Home Equity Loan | Consumer Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	239	167
Indirect consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	151,726	185,217
Indirect consumer loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	542	325
Loans Past Due 90 Days or More and Still Accruing	0	0
Past Due	2,195	2,081
Loans Not Past Due	149,531	183,136
Total ending loans balance	151,726	185,217
Indirect consumer loans | Consumer Loans | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,744	1,444
Indirect consumer loans | Consumer Loans | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4	345
Indirect consumer loans | Consumer Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	447	292
Direct Consumer Loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	43	30
Loans Past Due 90 Days or More and Still Accruing	0	0
Past Due	227	78
Loans Not Past Due	18,455	19,988
Total ending loans balance	18,682	20,066
Direct Consumer Loans | Consumer Loans | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	208	35
Direct Consumer Loans | Consumer Loans | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	13
Direct Consumer Loans | Consumer Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	19	30
Loans acquired with deteriorated credit quality
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	2,095	2,631
Total ending loans balance	2,095	2,631
Loans acquired with deteriorated credit quality | Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	0	620
Loans acquired with deteriorated credit quality | Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	1,825	1,761
Loans acquired with deteriorated credit quality | Residential mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	270	250
Total ending loans balance	270	250
Loans acquired with deteriorated credit quality | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total ending loans balance	0	0
Loans acquired with deteriorated credit quality | Commercial and industrial | Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	620
Total ending loans balance	0	620
Loans acquired with deteriorated credit quality | Agricultural | Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Total ending loans balance	0	0
Loans acquired with deteriorated credit quality | Construction Loans | Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Total ending loans balance	0	0
Loans acquired with deteriorated credit quality | Commercial mortgages | Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,825	1,761
Loans acquired with deteriorated credit quality | Credit cards | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Total ending loans balance	0	0
Loans acquired with deteriorated credit quality | Home Equity Loan | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Loans acquired with deteriorated credit quality | Indirect consumer loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Total ending loans balance	0	0
Loans acquired with deteriorated credit quality | Direct Consumer Loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Total ending loans balance	$ 0	$ 0