LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2023
Activity in allowance for loan losses
Balance, beginning of year	$ 28,702	$ 25,178	$ 21,180
Allowance established for acquired PCD Loans	5,920
Impact of adopting ASC 326	48,689	28,702	25,178
Provision for credit losses	17,408	1,682	4,160
Charge-offs	(4,066)	(1,105)	(410)
Recoveries	725	524	248
Balance, end of year	48,689	28,702	25,178
Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		2,423
Impact of adopting ASC 326			2,423	$ 2,400
Balance, end of year			2,423
Unallocated
Activity in allowance for loan losses
Balance, beginning of year	0	245	237
Allowance established for acquired PCD Loans	0
Impact of adopting ASC 326	0	0	245
Provision for credit losses	0	0	8
Charge-offs	0	0	0
Recoveries	0	0	0
Balance, end of year	0	0	245
Unallocated | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		(245)
Impact of adopting ASC 326			(245)
Balance, end of year			(245)
Commercial
Activity in allowance for loan losses
Balance, beginning of year	26,077	21,301	17,943
Allowance established for acquired PCD Loans	5,805
Impact of adopting ASC 326	42,772	26,077	21,301
Provision for credit losses	14,110	1,583	3,265
Charge-offs	(3,694)	(760)	0
Recoveries	474	213	93
Balance, end of year	42,772	26,077	21,301
Commercial | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		3,740
Impact of adopting ASC 326			3,740
Balance, end of year			3,740
Commercial | Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of year	17,873	13,558	12,037
Allowance established for acquired PCD Loans	1,321
Impact of adopting ASC 326	29,551	17,873	13,558
Provision for credit losses	10,963	1,360	1,489
Charge-offs	(656)	(12)	0
Recoveries	50	110	32
Balance, end of year	29,551	17,873	13,558
Commercial | Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		2,857
Impact of adopting ASC 326			2,857
Balance, end of year			2,857
Commercial | Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of year	2,241	3,214	2,062
Allowance established for acquired PCD Loans	2,535
Impact of adopting ASC 326	6,601	2,241	3,214
Provision for credit losses	1,809	(764)	1,142
Charge-offs	(23)	0	0
Recoveries	39	5	10
Balance, end of year	6,601	2,241	3,214
Commercial | Acquisition and Development | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		(214)
Impact of adopting ASC 326			(214)
Balance, end of year			(214)
Commercial | Agricultural
Activity in allowance for loan losses
Balance, beginning of year	437	218	197
Allowance established for acquired PCD Loans	2
Impact of adopting ASC 326	110	437	218
Provision for credit losses	(292)	19	21
Charge-offs	(38)	0	0
Recoveries	1	0	0
Balance, end of year	110	437	218
Commercial | Agricultural | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		200
Impact of adopting ASC 326			200
Balance, end of year			200
Commercial | Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of year	5,369	4,287	3,617
Allowance established for acquired PCD Loans	1,947
Impact of adopting ASC 326	6,190	5,369	4,287
Provision for credit losses	1,467	1,004	619
Charge-offs	(2,977)	(748)	0
Recoveries	384	98	51
Balance, end of year	6,190	5,369	4,287
Commercial | Commercial and Industrial | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		728
Impact of adopting ASC 326			728
Balance, end of year			728
Commercial | Municipal
Activity in allowance for loan losses
Balance, beginning of year	157	24	30
Allowance established for acquired PCD Loans	0
Impact of adopting ASC 326	320	157	24
Provision for credit losses	163	(36)	(6)
Charge-offs	0	0	0
Recoveries	0	0	0
Balance, end of year	320	157	24
Commercial | Municipal | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		169
Impact of adopting ASC 326			169
Balance, end of year			169
Consumer
Activity in allowance for loan losses
Balance, beginning of year	2,625	3,632	3,000
Allowance established for acquired PCD Loans	115
Impact of adopting ASC 326	5,917	2,625	3,632
Provision for credit losses	3,298	99	887
Charge-offs	(372)	(345)	(410)
Recoveries	251	311	155
Balance, end of year	5,917	2,625	3,632
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		(1,072)
Impact of adopting ASC 326			(1,072)
Balance, end of year			(1,072)
Consumer | Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of year	2,424	3,444	2,785
Allowance established for acquired PCD Loans	105
Impact of adopting ASC 326	5,240	2,424	3,444
Provision for credit losses	2,696	6	669
Charge-offs	(65)	(98)	(50)
Recoveries	80	193	40
Balance, end of year	5,240	2,424	3,444
Consumer | Residential Mortgage | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		(1,121)
Impact of adopting ASC 326			(1,121)
Balance, end of year			(1,121)
Consumer | Installment and Other
Activity in allowance for loan losses
Balance, beginning of year	201	188	215
Allowance established for acquired PCD Loans	10
Impact of adopting ASC 326	677	201	188
Provision for credit losses	602	93	218
Charge-offs	(307)	(247)	(360)
Recoveries	171	118	115
Balance, end of year	$ 677	201	188
Consumer | Installment and Other | Cumulative Effect, Period of Adoption, Adjustment
Activity in allowance for loan losses
Balance, beginning of year		$ 49
Impact of adopting ASC 326			49
Balance, end of year			$ 49