LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Business Activities Loans
Recorded Investment
Total	$ 12,804	$ 13,855
Unpaid Principal Balance
Total	13,211	14,124
Related Allowance
With an allowance recorded:	564	611
Business Activities Loans \| Total commercial real estate
Recorded Investment
Total	8,737	9,835
Unpaid Principal Balance
Total	8,885	9,962
Related Allowance
With an allowance recorded:	449	422
Business Activities Loans \| Total commercial real estate \| Construction and land development
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	1	1
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	1	1
Related Allowance
With an allowance recorded:	1	1
Business Activities Loans \| Total commercial real estate \| Other commercial real estate
Recorded Investment
With no related allowance:	7,502	8,209
With an allowance recorded:	1,234	1,625
Unpaid Principal Balance
With no related allowance:	7,552	8,301
With an allowance recorded:	1,332	1,660
Related Allowance
With an allowance recorded:	448	421
Business Activities Loans \| Commercial and industrial
Recorded Investment
Total	1,385	1,445
Unpaid Principal Balance
Total	1,470	1,524
Related Allowance
With an allowance recorded:	39	78
Business Activities Loans \| Commercial and industrial \| Commercial
Recorded Investment
With no related allowance:	975	649
With an allowance recorded:	410	796
Unpaid Principal Balance
With no related allowance:	1,032	669
With an allowance recorded:	438	855
Related Allowance
With an allowance recorded:	39	78
Business Activities Loans \| Commercial and industrial \| Agricultural
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
Business Activities Loans \| 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
Business Activities Loans \| Residential mortgages
Recorded Investment
Total	2,669	2,562
Unpaid Principal Balance
Total	2,843	2,625
Related Allowance
With an allowance recorded:	75	111
Business Activities Loans \| Residential mortgages \| Residential mortgages
Recorded Investment
With no related allowance:	2,099	1,671
With an allowance recorded:	570	891
Unpaid Principal Balance
With no related allowance:	2,246	1,709
With an allowance recorded:	597	916
Related Allowance
With an allowance recorded:	75	111
Business Activities Loans \| Consumer
Recorded Investment
Total	13	13
Unpaid Principal Balance
Total	13	13
Related Allowance
With an allowance recorded:	1	0
Business Activities Loans \| Consumer \| Home equity
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	13	13
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	13	13
Related Allowance
With an allowance recorded:	1	0
Business Activities Loans \| Consumer \| Other consumer
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
Acquired Loans
Recorded Investment
Total	1,396	1,358
Unpaid Principal Balance
Total	1,658	1,600
Related Allowance
With an allowance recorded:	47	41
Acquired Loans \| Total commercial real estate
Recorded Investment
Total	258	188
Unpaid Principal Balance
Total	258	187
Related Allowance
With an allowance recorded:	12	0
Acquired Loans \| Total commercial real estate \| Construction and land development
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
Acquired Loans \| Total commercial real estate \| Other commercial real estate
Recorded Investment
With no related allowance:	188	188
With an allowance recorded:	70	0
Unpaid Principal Balance
With no related allowance:	187	187
With an allowance recorded:	71	0
Related Allowance
With an allowance recorded:	12	0
Acquired Loans \| Commercial and industrial
Recorded Investment
Total	417	426
Unpaid Principal Balance
Total	505	510
Related Allowance
With an allowance recorded:	0	0
Acquired Loans \| Commercial and industrial \| Commercial
Recorded Investment
With no related allowance:	417	426
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	505	510
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans \| Commercial and industrial \| Agricultural
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
Acquired Loans \| 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
Acquired Loans \| Residential mortgages
Recorded Investment
Total	721	744
Unpaid Principal Balance
Total	895	903
Related Allowance
With an allowance recorded:	35	41
Acquired Loans \| Residential mortgages \| Residential mortgages
Recorded Investment
With no related allowance:	361	375
With an allowance recorded:	360	369
Unpaid Principal Balance
With no related allowance:	518	524
With an allowance recorded:	377	379
Related Allowance
With an allowance recorded:	35	41
Acquired Loans \| Consumer
Recorded Investment
Total	0	0
Unpaid Principal Balance
Total	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans \| Consumer \| Home equity
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
Acquired Loans \| Consumer \| Other consumer
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

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