LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	$ 2,401,012		$ 2,269,561
Allowance for credit losses	(25,213)	$ (25,232)	(24,209)	$ (23,645)	$ (22,665)	$ (21,388)
Loans, net	2,375,799		2,245,352
Commercial Real Estate
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	1,562,673		1,409,727
Allowance for credit losses	(16,465)	(16,198)	(14,363)	(13,738)	(12,714)	(11,214)
Commercial Real Estate \| Construction
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	130,095		120,418
Commercial Real Estate \| Owner occupied commercial real estate
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	188,710		178,620
Commercial Real Estate \| Non-owner occupied commercial real estate
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	1,243,868		1,110,689
Residential Mortgages
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	287,300		286,885
Allowance for credit losses	(2,437)	(2,401)	(2,788)	(2,633)	(2,597)	(2,259)
Consumer Loans
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	228,209		248,764
Allowance for credit losses	(2,268)	$ (2,420)	(2,534)	$ (2,697)	$ (2,830)	$ (3,395)
Consumer Loans \| Home equity lines and loans
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	117,901		109,723
Consumer Loans \| Indirect consumer loans
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	104,214		132,699
Consumer Loans \| Direct consumer loans
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	6,094		6,342
Commercial and industrial
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees and costs	$ 322,830		$ 324,185