LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowances For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 24,209	$ 21,388	$ 21,388
Charge-offs	(738)	(398)	(2,456)
Recoveries	832	136
Net recoveries (charge-offs)	94	(262)
Provision (credit)	587	1,396
Ending balance	24,890	22,522	24,209
Commercial and Industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,524	4,520	4,520
Charge-offs	(1)	(5)
Recoveries	677	4
Net recoveries (charge-offs)	676	(1)
Provision (credit)	(861)	634
Ending balance	4,339	5,153	4,524
Commercial Real Estate
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	14,363	11,214	11,214
Charge-offs	(310)	0
Recoveries	1	1
Net recoveries (charge-offs)	(309)	1
Provision (credit)	1,589	874
Ending balance	15,643	12,089	14,363
Residential Mortgages
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,788	2,259	2,259
Charge-offs	0	0	0
Recoveries	29	5
Net recoveries (charge-offs)	29	5
Provision (credit)	(420)	209
Ending balance	2,397	2,473	2,788
Consumer Loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,534	3,395	3,395
Charge-offs	(427)	(393)
Recoveries	125	126
Net recoveries (charge-offs)	(302)	(267)
Provision (credit)	279	(321)
Ending balance	2,511	2,807	2,534
Unfunded Loan Commitment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	586	842	842
Provision (credit)	14	(304)
Ending balance	$ 600	$ 538	$ 586