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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowances by Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Allowance for loan losses
Individually evaluated for impairment	$ 1,955		$ 1,147
Collectively evaluated for impairment	20,562		18,512
Total ending allowance balance	22,517	[1]	19,659	[1]	$ 21,025
Loans:
Loans individually analyzed	8,035		7,482
Loans collectively analyzed	1,964,629		1,821,966
Total loans, net of deferred loan fees and costs	1,972,664		1,829,448
Collateral Pledged
Allowance for loan losses
Total ending allowance balance	267
Loans:
Loans individually analyzed	6,347
Commercial and Agricultural
Allowance for loan losses
Individually evaluated for impairment	1,928		1,078
Collectively evaluated for impairment	3,127		2,295
Total ending allowance balance	5,055		3,373		3,591
Loans:
Loans individually analyzed	2,067		2,112
Loans collectively analyzed	262,329		250,181
Total loans, net of deferred loan fees and costs	264,396		252,293
Commercial Mortgages
Allowance for loan losses
Individually evaluated for impairment	27		38
Collectively evaluated for impairment	11,999		11,538
Total ending allowance balance	12,026		11,576		13,556
Loans:
Loans individually analyzed	5,968		4,383
Loans collectively analyzed	1,116,957		992,530
Total loans, net of deferred loan fees and costs	1,122,925		996,913
Residential Mortgages
Allowance for loan losses
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	2,194		1,845
Total ending allowance balance	2,194		1,845		1,803
Loans:
Loans individually analyzed	0		723
Loans collectively analyzed	277,992		284,949
Total loans, net of deferred loan fees and costs	277,992		285,672
Consumer Loans
Allowance for loan losses
Individually evaluated for impairment	0		31
Collectively evaluated for impairment	3,242		2,834
Total ending allowance balance	3,242		2,865		$ 2,075
Loans:
Loans individually analyzed	0		264
Loans collectively analyzed	307,351		294,306
Total loans, net of deferred loan fees and costs	$ 307,351		$ 294,570
[1] Effective January 1, 2023, the allowance calculation is based upon Current Expected Credit loss methodology. Prior to January 1, 2023, the allowance calculation was based upon incurred loss methodology. Refer to Note 1 for further discussion.

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