LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Non-accrual	$ 7,374	$ 8,114
Loans Past Due 90 Days or More and Still Accruing	2	4
Total recorded investment in loans	1,621,993	1,522,382
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	2,981	2,476
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	446	908
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	1,433	2,672
Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	4,860	6,056
Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	1,617,133	1,516,326
Commercial and Agricultural
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	259,308	258,013
Commercial Mortgages
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	868,635	804,825
Commercial Mortgages | Construction
Financing Receivable, Past Due [Line Items]
Non-accrual	17	34
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	95,210	82,435
Commercial Mortgages | Construction | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	616	0
Commercial Mortgages | Construction | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	0
Commercial Mortgages | Construction | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	0
Commercial Mortgages | Construction | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	616	0
Commercial Mortgages | Construction | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	94,594	82,435
Commercial Mortgages | Commercial mortgages, other
Financing Receivable, Past Due [Line Items]
Non-accrual	3,643	3,844
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	773,425	722,390
Commercial Mortgages | Commercial mortgages, other | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	350	24
Commercial Mortgages | Commercial mortgages, other | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	224
Commercial Mortgages | Commercial mortgages, other | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	244	1,302
Commercial Mortgages | Commercial mortgages, other | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	594	1,550
Commercial Mortgages | Commercial mortgages, other | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	772,831	720,840
Residential Mortgages
Financing Receivable, Past Due [Line Items]
Non-accrual	600	1,039
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	277,567	259,967
Residential Mortgages | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	1,330	580
Residential Mortgages | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	88	32
Residential Mortgages | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	341	652
Residential Mortgages | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	1,759	1,264
Residential Mortgages | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	275,808	258,703
Consumer Loans
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	216,483	199,577
Consumer Loans | Home equity lines and loans
Financing Receivable, Past Due [Line Items]
Non-accrual	785	790
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	73,926	70,854
Consumer Loans | Home equity lines and loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	26	256
Consumer Loans | Home equity lines and loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	70	69
Consumer Loans | Home equity lines and loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	543	424
Consumer Loans | Home equity lines and loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	639	749
Consumer Loans | Home equity lines and loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	73,287	70,105
Consumer Loans | Indirect consumer loans
Financing Receivable, Past Due [Line Items]
Non-accrual	575	462
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	132,601	118,855
Consumer Loans | Indirect consumer loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	600	1,179
Consumer Loans | Indirect consumer loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	237	424
Consumer Loans | Indirect consumer loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	285	255
Consumer Loans | Indirect consumer loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	1,122	1,858
Consumer Loans | Indirect consumer loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	131,479	116,997
Consumer Loans | Direct consumer loans
Financing Receivable, Past Due [Line Items]
Non-accrual	6	13
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	9,956	9,868
Consumer Loans | Direct consumer loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	3	24
Consumer Loans | Direct consumer loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	11
Consumer Loans | Direct consumer loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	6	13
Consumer Loans | Direct consumer loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	9	48
Consumer Loans | Direct consumer loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	9,947	9,820
Commercial and industrial | Commercial and Agricultural
Financing Receivable, Past Due [Line Items]
Non-accrual	1,748	1,932
Loans Past Due 90 Days or More and Still Accruing	2	4
Total recorded investment in loans	259,219	257,618
Commercial and industrial | Commercial and Agricultural | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	56	413
Commercial and industrial | Commercial and Agricultural | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	51	148
Commercial and industrial | Commercial and Agricultural | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	14	26
Commercial and industrial | Commercial and Agricultural | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	121	587
Commercial and industrial | Commercial and Agricultural | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	259,098	257,031
Agricultural | Commercial and Agricultural
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	89	395
Agricultural | Commercial and Agricultural | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial and Agricultural | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial and Agricultural | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial and Agricultural | Total Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial and Agricultural | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total recorded investment in loans	$ 89	$ 395