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LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 8,114	$ 9,952
Loans Past Due 90 Days or More and Still Accruing	4	2
Total recorded investment in loans	1,522,382	1,541,498
30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	2,476	4,598
60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	908	4,357
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	2,672	1,525
Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	6,056	10,480
Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	1,516,326	1,531,018
Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	258,013	370,252
Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	804,825	719,145
Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,039	1,632
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	259,967	240,013
Residential Mortgages | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	580	817
Residential Mortgages | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	32	406
Residential Mortgages | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	652	461
Residential Mortgages | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	1,264	1,684
Residential Mortgages | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	258,703	238,329
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	199,577	212,088
Construction | Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	34	55
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	82,435	62,164
Construction | Commercial mortgages: | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Construction | Commercial mortgages: | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Construction | Commercial mortgages: | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Construction | Commercial mortgages: | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Construction | Commercial mortgages: | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	82,435	62,164
Commercial mortgages | Commercial mortgages:
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,844	4,415
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	722,390	656,981
Commercial mortgages | Commercial mortgages: | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	24	1,438
Commercial mortgages | Commercial mortgages: | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	224	3,696
Commercial mortgages | Commercial mortgages: | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	1,302	308
Commercial mortgages | Commercial mortgages: | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	1,550	5,442
Commercial mortgages | Commercial mortgages: | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	720,840	651,539
Home equity lines and loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	790	1,159
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	70,854	78,761
Home equity lines and loans | Consumer Loans | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	256	521
Home equity lines and loans | Consumer Loans | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	69	41
Home equity lines and loans | Consumer Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	424	474
Home equity lines and loans | Consumer Loans | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	749	1,036
Home equity lines and loans | Consumer Loans | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	70,105	77,725
Indirect Consumer Loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	462	519
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	118,855	120,853
Indirect Consumer Loans | Consumer Loans | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	1,179	1,268
Indirect Consumer Loans | Consumer Loans | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	424	198
Indirect Consumer Loans | Consumer Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	255	252
Indirect Consumer Loans | Consumer Loans | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	1,858	1,718
Indirect Consumer Loans | Consumer Loans | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	116,997	119,135
Direct consumer loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	13	5
Loans Past Due 90 Days or More and Still Accruing	0	0
Total recorded investment in loans	9,868	12,474
Direct consumer loans | Consumer Loans | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	24	34
Direct consumer loans | Consumer Loans | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	11	2
Direct consumer loans | Consumer Loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	13	0
Direct consumer loans | Consumer Loans | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	48	36
Direct consumer loans | Consumer Loans | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	9,820	12,438
Commercial and industrial | Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,932	2,167
Loans Past Due 90 Days or More and Still Accruing	4	2
Total recorded investment in loans	257,618	369,968
Commercial and industrial | Commercial, and Agricultural | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	413	520
Commercial and industrial | Commercial, and Agricultural | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	148	14
Commercial and industrial | Commercial, and Agricultural | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	26	30
Commercial and industrial | Commercial, and Agricultural | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	587	564
Commercial and industrial | Commercial, and Agricultural | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	257,031	369,404
Agricultural | Commercial, and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	395	284
Agricultural | Commercial, and Agricultural | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial, and Agricultural | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial, and Agricultural | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial, and Agricultural | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	0	0
Agricultural | Commercial, and Agricultural | Loans Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total recorded investment in loans	$ 395	$ 284

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