LOANS - Summary of Impaired Loans (Details) - Business Activities Loans - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Recorded Investment
Total	$ 6,314	$ 6,709
Unpaid Principal Balance
Total	8,636	8,989
Related Allowance
With an allowance recorded:	394	424
Commercial Real Estate:
Recorded Investment
Total	3,916	4,481
Unpaid Principal Balance
Total	6,075	6,494
Related Allowance
With an allowance recorded:	380	193
Commercial Real Estate: \| Construction and land development
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	637	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	2,562	0
Related Allowance
With an allowance recorded:	59	0
Commercial Real Estate: \| Other commercial real estate
Recorded Investment
With no related allowance:	2,522	2,831
With an allowance recorded:	757	1,650
Unpaid Principal Balance
With no related allowance:	2,701	2,919
With an allowance recorded:	812	3,575
Related Allowance
With an allowance recorded:	321	193
Commercial and Industrial:
Recorded Investment
Total	479	486
Unpaid Principal Balance
Total	485	636
Related Allowance
With an allowance recorded:	4	173
Commercial and Industrial: \| Other Commercial
Recorded Investment
With no related allowance:	366	130
With an allowance recorded:	44	217
Unpaid Principal Balance
With no related allowance:	368	130
With an allowance recorded:	44	367
Related Allowance
With an allowance recorded:	4	173
Commercial and Industrial: \| Agricultural and other loans to farmers
Recorded Investment
With no related allowance:	69	139
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	73	139
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Commercial and Industrial: \| Tax exempt
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Residential Real Estate:
Recorded Investment
Total	1,858	1,709
Unpaid Principal Balance
Total	2,013	1,826
Related Allowance
With an allowance recorded:	10	49
Residential Real Estate: \| Residential mortgages
Recorded Investment
With no related allowance:	1,700	1,387
With an allowance recorded:	158	322
Unpaid Principal Balance
With no related allowance:	1,855	1,504
With an allowance recorded:	158	322
Related Allowance
With an allowance recorded:	10	49
Consumer:
Recorded Investment
Total	61	33
Unpaid Principal Balance
Total	63	33
Related Allowance
With an allowance recorded:	0	9
Consumer: \| Home equity
Recorded Investment
With no related allowance:	13	16
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	13	16
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Consumer: \| Other consumer
Recorded Investment
With no related allowance:	48	2
With an allowance recorded:	0	15
Unpaid Principal Balance
With no related allowance:	50	2
With an allowance recorded:	0	15
Related Allowance
With an allowance recorded:	$ 0	$ 9

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