LOANS AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality Indicator (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Term Loans Amortized Cost by Origination Year
2026	$ 87,836		$ 378,575
2025	386,559		245,997
2024	230,829		256,545
2023	245,870		432,177
2022	420,718		241,814
Prior	706,423		485,070
Revolving Loans Amortized Cost	224,608		220,360
Revolving Loans Converted to Term	8,862		9,023
Total loans, net of deferred loan fees and costs	2,311,705		2,269,561
Total gross charge-offs
2026	0		24
2025	16		391
2024	194		664
2023	426		370
2022	76		896
Prior	26		84
Revolving Loans Amortized Cost	0		27
Revolving Loans Converted to Term	0		0
Total	738	$ 398	2,456
Commercial and industrial
Term Loans Amortized Cost by Origination Year
2026	8,829		54,035
2025	51,347		26,011
2024	20,405		22,640
2023	22,155		27,545
2022	26,691		12,821
Prior	35,675		23,201
Revolving Loans Amortized Cost	152,003		151,425
Revolving Loans Converted to Term	6,169		6,507
Total loans, net of deferred loan fees and costs	323,274		324,185
Total gross charge-offs
2026	0		0
2025	0		19
2024	0		0
2023	0		0
2022	0		772
Prior	1		0
Revolving Loans Amortized Cost	0		6
Revolving Loans Converted to Term	0		0
Total	1		797
Commercial and industrial | Pass
Term Loans Amortized Cost by Origination Year
2026	8,829		52,419
2025	49,999		25,663
2024	20,079		22,131
2023	21,651		25,382
2022	24,551		11,367
Prior	27,146		15,765
Revolving Loans Amortized Cost	135,058		135,641
Revolving Loans Converted to Term	2,404		2,726
Total loans, net of deferred loan fees and costs	289,717		291,094
Commercial and industrial | Special mention
Term Loans Amortized Cost by Origination Year
2026	0		1,616
2025	1,348		31
2024	27		496
2023	496		2,163
2022	2,140		1,412
Prior	7,927		6,852
Revolving Loans Amortized Cost	14,166		13,139
Revolving Loans Converted to Term	3,626		3,631
Total loans, net of deferred loan fees and costs	29,730		29,340
Commercial and industrial | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		317
2024	299		13
2023	8		0
2022	0		42
Prior	44		0
Revolving Loans Amortized Cost	2,634		2,645
Revolving Loans Converted to Term	64		75
Total loans, net of deferred loan fees and costs	3,049		3,092
Commercial and industrial | Doubtful
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	558		584
Revolving Loans Amortized Cost	145		0
Revolving Loans Converted to Term	75		75
Total loans, net of deferred loan fees and costs	778		659
Commercial real estate:
Term Loans Amortized Cost by Origination Year
Total loans, net of deferred loan fees and costs	1,463,267		1,409,727
Total gross charge-offs
Total	310	0
Commercial real estate: | Construction
Term Loans Amortized Cost by Origination Year
2026	13,764		38,266
2025	48,967		29,670
2024	26,663		33,259
2023	29,422		14,754
2022	273		1,213
Prior	2,469		1,323
Revolving Loans Amortized Cost	1,703		1,933
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	123,261		120,418
Total gross charge-offs
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial real estate: | Construction | Pass
Term Loans Amortized Cost by Origination Year
2026	13,764		38,266
2025	48,967		29,670
2024	25,866		33,259
2023	29,422		14,754
2022	273		1,213
Prior	2,469		1,323
Revolving Loans Amortized Cost	1,703		1,933
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	122,464		120,418
Commercial real estate: | Construction | Special mention
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	797		0
2023	0		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	797		0
Commercial real estate: | Construction | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	0		0
Commercial real estate: | Construction | Doubtful
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	0		0
Commercial real estate: | Owner occupied commercial real estate
Term Loans Amortized Cost by Origination Year
2026	1,583		49,557
2025	50,119		23,186
2024	22,793		22,308
2023	21,723		25,164
2022	24,338		19,878
Prior	53,314		35,898
Revolving Loans Amortized Cost	3,743		2,590
Revolving Loans Converted to Term	35		39
Total loans, net of deferred loan fees and costs	177,648		178,620
Total gross charge-offs
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial real estate: | Owner occupied commercial real estate | Pass
Term Loans Amortized Cost by Origination Year
2026	1,583		48,350
2025	48,918		23,186
2024	22,793		17,531
2023	19,510		23,050
2022	22,705		12,966
Prior	42,672		31,441
Revolving Loans Amortized Cost	747		590
Revolving Loans Converted to Term	35		39
Total loans, net of deferred loan fees and costs	158,963		157,153
Commercial real estate: | Owner occupied commercial real estate | Special mention
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		4,681
2023	2,116		1,646
2022	1,632		6,912
Prior	10,177		3,567
Revolving Loans Amortized Cost	2,996		2,000
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	16,921		18,806
Commercial real estate: | Owner occupied commercial real estate | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		1,207
2025	1,201		0
2024	0		96
2023	97		468
2022	1		0
Prior	464		886
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	1,763		2,657
Commercial real estate: | Owner occupied commercial real estate | Doubtful
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	1		4
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	1		4
Commercial real estate: | Non-owner occupied commercial real estate
Term Loans Amortized Cost by Origination Year
2026	50,071		164,396
2025	164,271		102,759
2024	102,863		117,401
2023	116,795		261,738
2022	274,143		146,391
Prior	444,715		308,176
Revolving Loans Amortized Cost	8,784		9,102
Revolving Loans Converted to Term	716		726
Total loans, net of deferred loan fees and costs	1,162,358		1,110,689
Total gross charge-offs
2026	0		0
2025	0		0
2024	0		0
2023	310		0
2022	0		0
Prior	0		6
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total	310		6
Commercial real estate: | Non-owner occupied commercial real estate | Pass
Term Loans Amortized Cost by Origination Year
2026	50,071		162,357
2025	161,184		102,759
2024	102,731		99,585
2023	101,040		242,886
2022	254,611		133,385
Prior	399,355		279,901
Revolving Loans Amortized Cost	8,784		9,102
Revolving Loans Converted to Term	716		726
Total loans, net of deferred loan fees and costs	1,078,492		1,030,701
Commercial real estate: | Non-owner occupied commercial real estate | Special mention
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	1,053		0
2024	132		15,301
2023	15,252		18,852
2022	19,532		13,006
Prior	45,157		27,806
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	81,126		74,965
Commercial real estate: | Non-owner occupied commercial real estate | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		2,039
2025	2,034		0
2024	0		2,515
2023	0		0
2022	0		0
Prior	203		469
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	2,237		5,023
Commercial real estate: | Non-owner occupied commercial real estate | Doubtful
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		0
2023	503		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	503		0
Residential Mortgages
Term Loans Amortized Cost by Origination Year
2026	6,016		38,892
2025	40,607		24,307
2024	22,396		17,659
2023	17,063		51,161
2022	50,045		51,115
Prior	149,863		103,751
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	285,990		286,885
Total gross charge-offs
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total	0	0	0
Residential Mortgages | Not rated
Term Loans Amortized Cost by Origination Year
2026	6,016		38,892
2025	40,607		24,307
2024	22,396		17,590
2023	16,994		50,866
2022	49,819		50,380
Prior	147,897		102,421
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	283,729		284,456
Residential Mortgages | Special mention
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		426
Prior	427		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	427		426
Residential Mortgages | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		69
2023	69		295
2022	226		309
Prior	1,539		1,330
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	1,834		2,003
Consumer Loans
Term Loans Amortized Cost by Origination Year
Total loans, net of deferred loan fees and costs	239,174		248,764
Total gross charge-offs
Total	427	$ 393
Consumer Loans | Home equity lines and loans
Term Loans Amortized Cost by Origination Year
2026	1,564		7,882
2025	7,633		12,004
2024	10,820		8,871
2023	8,352		11,459
2022	10,915		4,113
Prior	13,636		10,316
Revolving Loans Amortized Cost	56,506		53,331
Revolving Loans Converted to Term	1,938		1,747
Total loans, net of deferred loan fees and costs	111,364		109,723
Total gross charge-offs
2026	0		0
2025	0		0
2024	0		0
2023	0		0
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Consumer Loans | Home equity lines and loans | Not rated
Term Loans Amortized Cost by Origination Year
2026	1,564		7,882
2025	7,633		12,004
2024	10,755		8,849
2023	8,332		11,138
2022	10,649		4,113
Prior	13,468		10,124
Revolving Loans Amortized Cost	56,396		53,219
Revolving Loans Converted to Term	1,551		1,275
Total loans, net of deferred loan fees and costs	110,348		108,604
Consumer Loans | Home equity lines and loans | Special mention
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	0		0
2023	0		114
2022	113		0
Prior	0		0
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	113		114
Consumer Loans | Home equity lines and loans | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		0
2025	0		0
2024	65		22
2023	20		207
2022	153		0
Prior	168		192
Revolving Loans Amortized Cost	110		112
Revolving Loans Converted to Term	387		472
Total loans, net of deferred loan fees and costs	903		1,005
Consumer Loans | Indirect consumer
Term Loans Amortized Cost by Origination Year
2026	5,526		23,954
2025	22,216		26,721
2024	23,739		33,657
2023	29,774		39,893
2022	33,966		6,223
Prior	6,572		2,251
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	121,793		132,699
Total gross charge-offs
2026	0		12
2025	14		345
2024	179		641
2023	112		358
2022	73		121
Prior	24		78
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total	402		1,555
Consumer Loans | Indirect consumer | Not rated
Term Loans Amortized Cost by Origination Year
2026	5,526		23,872
2025	22,038		26,326
2024	23,258		33,271
2023	29,420		39,644
2022	33,657		6,197
Prior	6,493		2,207
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	120,392		131,517
Consumer Loans | Indirect consumer | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		82
2025	178		395
2024	481		386
2023	354		249
2022	309		26
Prior	79		44
Revolving Loans Amortized Cost	0		0
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	1,401		1,182
Consumer Loans | Direct consumer
Term Loans Amortized Cost by Origination Year
2026	483		1,593
2025	1,399		1,339
2024	1,150		750
2023	586		463
2022	347		60
Prior	179		154
Revolving Loans Amortized Cost	1,869		1,979
Revolving Loans Converted to Term	4		4
Total loans, net of deferred loan fees and costs	6,017		6,342
Total gross charge-offs
2026	0		12
2025	2		27
2024	15		23
2023	4		12
2022	3		3
Prior	1		0
Revolving Loans Amortized Cost	0		21
Revolving Loans Converted to Term	0		0
Total	25		98
Consumer Loans | Direct consumer | Not rated
Term Loans Amortized Cost by Origination Year
2026	483		1,591
2025	1,390		1,339
2024	1,150		750
2023	586		460
2022	347		60
Prior	179		154
Revolving Loans Amortized Cost	1,859		1,969
Revolving Loans Converted to Term	4		4
Total loans, net of deferred loan fees and costs	5,998		6,327
Consumer Loans | Direct consumer | Substandard
Term Loans Amortized Cost by Origination Year
2026	0		2
2025	9		0
2024	0		0
2023	0		3
2022	0		0
Prior	0		0
Revolving Loans Amortized Cost	10		10
Revolving Loans Converted to Term	0		0
Total loans, net of deferred loan fees and costs	$ 19		$ 15