LOANS AND ALLOWANCE FOR CREDIT LOSSES - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Activity in allowance for loan losses
Balance, beginning of period	$ 47,898	$ 29,864	$ 48,689	$ 28,702
Allowance established for acquired PCD loans		5,920		5,920
Provision for loan losses	396	14,115	51	15,348
Charge-offs	(518)	(580)	(1,915)	(843)
Recoveries	329	311	1,280	503
Balance end of period	48,105	49,630	48,105	49,630
Commercial
Activity in allowance for loan losses
Balance, beginning of period	39,777	26,650	42,772	26,077
Allowance established for acquired PCD loans		5,805		5,805
Provision for loan losses	(53)	12,067	(2,870)	12,605
Charge-offs	(183)	(492)	(1,112)	(587)
Recoveries	262	180	1,013	310
Balance end of period	39,803	44,210	39,803	44,210
Commercial \| Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of period	26,163	18,203	29,551	17,873
Allowance established for acquired PCD loans		1,321		1,321
Provision for loan losses	656	11,103	(2,554)	11,417
Charge-offs	(154)	(333)	(340)	(345)
Recoveries	7	4	15	32
Balance end of period	26,672	30,298	26,672	30,298
Commercial \| Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of period	5,585	2,634	6,601	2,241
Allowance established for acquired PCD loans		2,535		2,535
Provision for loan losses	(106)	1,809	(1,124)	2,223
Charge-offs	0	0	0	(23)
Recoveries	0	12	2	14
Balance end of period	5,479	6,990	5,479	6,990
Commercial \| Agricultural
Activity in allowance for loan losses
Balance, beginning of period	160	393	110	437
Allowance established for acquired PCD loans		2		2
Provision for loan losses	(26)	(283)	55	(327)
Charge-offs	0	0	(31)	0
Recoveries	0	1	0	1
Balance end of period	134	113	134	113
Commercial \| Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of period	7,484	5,259	6,190	5,369
Allowance established for acquired PCD loans		1,947		1,947
Provision for loan losses	(567)	(672)	698	(822)
Charge-offs	(29)	(159)	(741)	(219)
Recoveries	255	163	996	263
Balance end of period	7,143	6,538	7,143	6,538
Commercial \| Municipal
Activity in allowance for loan losses
Balance, beginning of period	385	161	320	157
Allowance established for acquired PCD loans		0		0
Provision for loan losses	(10)	110	55	114
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance end of period	375	271	375	271
Consumer
Activity in allowance for loan losses
Balance, beginning of period	8,121	3,214	5,917	2,625
Allowance established for acquired PCD loans		115		115
Provision for loan losses	449	2,048	2,921	2,743
Charge-offs	(335)	(88)	(803)	(256)
Recoveries	67	131	267	193
Balance end of period	8,302	5,420	8,302	5,420
Consumer \| Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of period	7,603	3,023	5,240	2,424
Allowance established for acquired PCD loans		105		105
Provision for loan losses	234	1,773	2,455	2,410
Charge-offs	(134)	0	(134)	(50)
Recoveries	9	54	151	66
Balance end of period	7,712	4,955	7,712	4,955
Consumer \| Installment and Other
Activity in allowance for loan losses
Balance, beginning of period	518	191	677	201
Allowance established for acquired PCD loans		10		10
Provision for loan losses	215	275	466	333
Charge-offs	(201)	(88)	(669)	(206)
Recoveries	58	77	116	127
Balance end of period	$ 590	$ 465	$ 590	$ 465

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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- Definition

Amount of increase in allowance for credit loss on financing receivable from purchase of loan. Excludes financing receivable purchased with credit deterioration, loan acquired through business combination or acquisition, and net investment in lease.

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