LOANS AND ALLOWANCE FOR LOAN LOSSES - Credit Quality Indicator (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	$ 1,621,993	$ 1,522,382
Loans, net and loans held for sale	1,600,077	1,497,224
Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	492,084	457,240
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	1,082,331	1,006,069
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	33,555	33,964
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	13,000	22,901
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	1,023	2,208
Commercial and Agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	259,308	258,013
Commercial and Agricultural | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	259,219	257,618
Commercial and Agricultural | Commercial and industrial | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial and Agricultural | Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	251,866	250,529
Commercial and Agricultural | Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	3,188	2,892
Commercial and Agricultural | Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	3,186	3,108
Commercial and Agricultural | Commercial and industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	979	1,089
Commercial and Agricultural | Agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	89	395
Commercial and Agricultural | Agricultural | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial and Agricultural | Agricultural | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	89	395
Commercial and Agricultural | Agricultural | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial and Agricultural | Agricultural | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial and Agricultural | Agricultural | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial Mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	868,635	804,825
Commercial Mortgages | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	95,210	82,435
Commercial Mortgages | Construction | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial Mortgages | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	95,193	82,404
Commercial Mortgages | Construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial Mortgages | Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	17	31
Commercial Mortgages | Construction | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial Mortgages | Commercial mortgages, other
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	773,425	722,390
Commercial Mortgages | Commercial mortgages, other | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Commercial Mortgages | Commercial mortgages, other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	735,183	672,741
Commercial Mortgages | Commercial mortgages, other | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	30,367	31,072
Commercial Mortgages | Commercial mortgages, other | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	7,831	17,458
Commercial Mortgages | Commercial mortgages, other | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	44	1,119
Residential Mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	277,567	259,967
Loans, net and loans held for sale	277,567	259,967
Residential Mortgages | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	276,967	258,928
Residential Mortgages | Non-Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	600	1,039
Residential Mortgages | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	276,967	258,928
Residential Mortgages | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Residential Mortgages | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Residential Mortgages | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	600	1,039
Residential Mortgages | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	216,483	199,577
Consumer Loans | Home equity lines and loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	73,926	70,854
Loans, net and loans held for sale	73,926	70,854
Consumer Loans | Home equity lines and loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	73,141	70,064
Consumer Loans | Home equity lines and loans | Non-Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	785	790
Consumer Loans | Home equity lines and loans | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	73,141	70,064
Consumer Loans | Home equity lines and loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Home equity lines and loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Home equity lines and loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	785	790
Consumer Loans | Home equity lines and loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Indirect consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	132,601	118,855
Loans, net and loans held for sale	132,601	118,855
Consumer Loans | Indirect consumer loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	132,026	118,393
Consumer Loans | Indirect consumer loans | Non-Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	575	462
Consumer Loans | Indirect consumer loans | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	132,026	118,393
Consumer Loans | Indirect consumer loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Indirect consumer loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Indirect consumer loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	575	462
Consumer Loans | Indirect consumer loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Direct consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	9,956	9,868
Consumer Loans | Direct consumer loans | Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	9,950	9,855
Consumer Loans | Direct consumer loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Direct consumer loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Direct consumer loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	6	13
Consumer Loans | Direct consumer loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total recorded investment in loans	0	0
Consumer Loans | Other Direct Consumer Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	9,956	9,868
Consumer Loans | Other Direct Consumer Loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	9,950	9,855
Consumer Loans | Other Direct Consumer Loans | Non-Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net and loans held for sale	$ 6	$ 13