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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Loans by Type (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans receivable	$ 2,354,365,000	$ 1,895,848,000
Allowance for credit losses on loans	(31,048,000)	(20,035,000)	$ (19,208,000)	$ (16,615,000)
Loans, net	2,323,317,000	1,875,813,000
Net of deferred loan origination fees	4,074,000	4,136,000
Commercial
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Allowance for credit losses on loans			(2,116,000)	(1,942,000)
Commercial \| Commercial real estate - non-owner occupied
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans receivable	927,738,000	739,565,000
Allowance for credit losses on loans	(19,462,000)	(11,964,000)	(12,010,000)	(6,305,000)
Commercial \| Commercial real estate - owner occupied
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans receivable	311,792,000	261,071,000
Allowance for credit losses on loans	(4,086,000)	(2,844,000)	(2,116,000)
Commercial \| All other commercial loans
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans receivable	560,537,000	423,277,000
Allowance for credit losses on loans	(5,505,000)	(3,361,000)	(2,918,000)	(4,142,000)
Residential mortgage loans
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans receivable	443,950,000	408,009,000
Allowance for credit losses on loans	(1,629,000)	(1,356,000)	(1,764,000)	(2,751,000)
Consumer loans
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans receivable	110,348,000	63,926,000
Allowance for credit losses on loans	$ (366,000)	$ (510,000)	$ (400,000)	$ (475,000)