LOANS AND ALLOWANCE FOR LOAN LOSSES - Loan Impairment - (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Loans individually evaluated for impairment and average balance of impaired loans
Performing troubled debt restructurings excluded as allowed	$ 1,984		$ 1,984		$ 2,760
Unpaid Principal Balance
With an allowance recorded	5,191		5,191		4,146
With no related allowance recorded	17,628		17,628		15,230
Total impaired loans	22,819		22,819		19,376
Recorded Investment
With an allowance recorded	5,081		5,081		3,981
With no related allowance recorded	14,814		14,814		12,248
Total impaired loans	19,895		19,895		16,229
Allowance for Loan Losses Allocated
With an allowance recorded	986		986		1,429
Total impaired loans	986		986		1,429
Average recorded investment
Average Balance	17,256	$ 18,966	16,914	$ 22,247
Interest Income Recognized
Total impaired loans - interest income recognized	140	59	198	169
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized	140	59	198	169
Commercial
Allowance for Loan Losses Allocated
With an allowance recorded	363		363		92
Commercial | Commercial and industrial
Unpaid Principal Balance
With an allowance recorded	371		371		150
With no related allowance recorded	498		498		676
Recorded Investment
With an allowance recorded	348		348		150
With no related allowance recorded	406		406		655
Allowance for Loan Losses Allocated
With an allowance recorded	92		92		92
Average recorded investment
Average Balance	756	1,656	772	1,289
Interest Income Recognized
Total impaired loans - interest income recognized	18	4	31	6
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized	18	4	31	6
Commercial | Agricultural
Unpaid Principal Balance
With an allowance recorded	1,450		1,450
With no related allowance recorded	198		198		7
Recorded Investment
With an allowance recorded	1,450		1,450
With no related allowance recorded	198		198		7
Allowance for Loan Losses Allocated
With an allowance recorded	271		271
Average recorded investment
Average Balance	827		554	50
Commercial | Farm
Unpaid Principal Balance
With an allowance recorded	1,084		1,084
With no related allowance recorded	516		516
Recorded Investment
With an allowance recorded	1,083		1,083
With no related allowance recorded	280		280
Allowance for Loan Losses Allocated
With an allowance recorded	203		203
Commercial | Construction and development
Unpaid Principal Balance
With no related allowance recorded	240		240
Recorded Investment
With no related allowance recorded	164		164
Commercial | Other
Unpaid Principal Balance
With an allowance recorded	994		994
With no related allowance recorded	5,320		5,320
Recorded Investment
With an allowance recorded	948		948
With no related allowance recorded	4,214		4,214
Allowance for Loan Losses Allocated
With an allowance recorded	257		257
Commercial Real Estate
Allowance for Loan Losses Allocated
With an allowance recorded	460		460		1,166
Commercial Real Estate | Farm
Unpaid Principal Balance
With no related allowance recorded					496
Recorded Investment
With no related allowance recorded					309
Average recorded investment
Average Balance	829	328	656	450
Interest Income Recognized
Total impaired loans - interest income recognized				4
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized				4
Commercial Real Estate | Hotel
Average recorded investment
Average Balance		1,437		4,750
Commercial Real Estate | Construction and development
Unpaid Principal Balance
With no related allowance recorded					189
Recorded Investment
With no related allowance recorded					186
Average recorded investment
Average Balance	175		178	26
Interest Income Recognized
Total impaired loans - interest income recognized				47
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized				47
Commercial Real Estate | Other
Unpaid Principal Balance
With an allowance recorded					2,480
With no related allowance recorded					4,429
Recorded Investment
With an allowance recorded					2,363
With no related allowance recorded					3,291
Allowance for Loan Losses Allocated
With an allowance recorded					1,166
Average recorded investment
Average Balance	4,760	5,964	5,058	5,668
Interest Income Recognized
Total impaired loans - interest income recognized	91	30	117	55
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized	91	30	117	55
Residential
Allowance for Loan Losses Allocated
With an allowance recorded	163		163		171
Residential | 1-4 family
Unpaid Principal Balance
With an allowance recorded	1,183		1,183		1,357
With no related allowance recorded	8,427		8,427		6,718
Recorded Investment
With an allowance recorded	1,143		1,143		1,309
With no related allowance recorded	7,357		7,357		5,391
Allowance for Loan Losses Allocated
With an allowance recorded	161		161		167
Average recorded investment
Average Balance	7,467	7,720	7,211	7,772
Interest Income Recognized
Total impaired loans - interest income recognized	17	14	27	35
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized	17	14	27	35
Residential | Home equity
Unpaid Principal Balance
With an allowance recorded	109		109		159
With no related allowance recorded	2,291		2,291		2,589
Recorded Investment
With an allowance recorded	109		109		159
With no related allowance recorded	2,064		2,064		2,296
Allowance for Loan Losses Allocated
With an allowance recorded	2		2		4
Average recorded investment
Average Balance	2,317	1,758	2,363	2,100
Interest Income Recognized
Total impaired loans - interest income recognized	12	4	16	8
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized	12	4	16	8
Residential | Direct
Unpaid Principal Balance
With no related allowance recorded	138		138
Recorded Investment
With no related allowance recorded	131		131
Consumer | Direct
Unpaid Principal Balance
With no related allowance recorded					126
Recorded Investment
With no related allowance recorded					$ 113
Average recorded investment
Average Balance	124	103	121	140
Interest Income Recognized
Total impaired loans - interest income recognized	2	6	6	10
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized	2	6	6	10
Consumer | Indirect
Average recorded investment
Average Balance	$ 1		1	2
Interest Income Recognized
Total impaired loans - interest income recognized		1	1	4
Cash Basis Income Recognized
Total impaired loans - cash basis income recognized		$ 1	$ 1	$ 4