ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Schedule of Risk Category of Loans by Loan Segment and Origination Date (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	$ 176,914		$ 644,836
Year Two	655,261		745,896
Year Three	709,805		750,313
Year Four	704,805		481,427
Year Five	484,578		382,759
Prior	629,980		311,201
Term Total	3,361,343		3,316,432
Revolving	1,861,878		1,801,516
Total	5,223,221		5,117,948
Year One	0		49
Year Two	20		686
Year Three	82		409
Year Four	8		575
Year Five	58		179
Prior	24		910
Term Total	192		2,808
Revolving	316		660
Total	508	$ 504	3,468
Other commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	3,424		6,639
Year Two	7,405		17,137
Year Three	16,598		29,985
Year Four	28,944		3,397
Year Five	3,202		11,310
Prior	17,509		7,416
Term Total	77,082		75,884
Revolving	17,743		19,609
Total	94,825		95,493
Working capital lines of credit loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		94
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		94
Revolving	0		136
Total	0		230
Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	3,747		1,599
Year Two	1,550		3,204
Year Three	4,115		42,567
Year Four	42,475		1,647
Year Five	1,192		846
Prior	787		219
Term Total	53,866		50,082
Revolving	662,542		599,358
Total	716,408		649,440
Non-working capital loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		383
Year Three	0		0
Year Four	0		542
Year Five	0		179
Prior	0		44
Term Total	0		1,148
Revolving	10		237
Total	10		1,385
Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	28,491		157,118
Year Two	166,048		164,533
Year Three	155,277		178,045
Year Four	161,322		60,751
Year Five	54,899		38,225
Prior	60,064		31,083
Term Total	626,101		629,755
Revolving	180,477		171,003
Total	806,578		800,758
Construction and land development loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Construction and land development loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	16,094		23,867
Year Two	24,839		69,737
Year Three	58,263		43,228
Year Four	40,754		2,566
Year Five	24,140		0
Prior	0		0
Term Total	164,090		139,398
Revolving	458,160		426,577
Total	622,250		565,975
Owner occupied loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		840
Term Total	0		840
Revolving	0		0
Total	0		840
Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	31,510		105,460
Year Two	105,665		141,345
Year Three	127,817		134,968
Year Four	132,650		146,743
Year Five	142,340		111,527
Prior	226,668		131,539
Term Total	766,650		771,582
Revolving	37,777		35,003
Total	804,427		806,585
Nonowner occupied loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Nonowner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	26,755		152,963
Year Two	157,174		134,167
Year Three	131,670		168,495
Year Four	150,573		106,932
Year Five	104,684		119,612
Prior	170,940		77,497
Term Total	741,796		759,666
Revolving	109,635		112,336
Total	851,431		872,002
Multifamily loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Multifamily loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	38,669		70,497
Year Two	70,356		61,679
Year Three	72,075		12,015
Year Four	8,154		52,995
Year Five	52,921		29,177
Prior	34,930		9,794
Term Total	277,105		236,157
Revolving	62,556		108,486
Total	339,661		344,643
Loans secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	5,602		14,696
Year Two	15,269		21,450
Year Three	19,160		29,601
Year Four	33,162		23,043
Year Five	22,760		25,192
Prior	42,852		18,383
Term Total	138,805		132,365
Revolving	17,313		24,249
Total	156,118		156,614
Loans for agricultural production
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Loans for agricultural production | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	885		15,945
Year Two	15,418		26,704
Year Three	25,757		21,611
Year Four	21,102		24,374
Year Five	23,557		21,446
Prior	21,345		1,450
Term Total	108,064		111,530
Revolving	119,681		119,365
Total	227,745		230,895
Other commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Closed end first mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	24		0
Term Total	24		0
Revolving	0		0
Total	24		0
Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	10,995		39,932
Year Two	40,623		64,461
Year Three	62,042		57,113
Year Four	56,032		45,607
Year Five	43,334		19,795
Prior	45,642		27,710
Term Total	258,668		254,618
Revolving	6,821		4,299
Total	265,489		258,917
Open end and junior lien loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		79
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		79
Revolving	0		15
Total	0		94
Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	6,091		22,503
Year Two	19,267		16,976
Year Three	15,125		18,053
Year Four	16,205		5,113
Year Five	4,093		953
Prior	2,177		2,980
Term Total	62,958		66,578
Revolving	157,070		149,559
Total	220,028		216,137
Residential construction loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Residential construction loans: | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	130		10,030
Year Two	9,932		1,154
Year Three	762		2,045
Year Four	2,014		1,386
Year Five	1,361		759
Prior	2,069		1,348
Term Total	16,268		16,722
Revolving	0		0
Total	16,268		16,722
Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		49
Year Two	20		303
Year Three	82		236
Year Four	8		33
Year Five	58		0
Prior	0		26
Term Total	168		647
Revolving	306		272
Total	474		919
Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	4,521		23,587
Year Two	21,715		23,349
Year Three	21,144		12,587
Year Four	11,418		6,873
Year Five	6,095		3,917
Prior	4,997		1,782
Term Total	69,890		72,095
Revolving	32,103		31,672
Total	101,993		103,767
Pass | Other commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	3,424		6,639
Year Two	7,405		17,137
Year Three	16,598		29,985
Year Four	28,944		3,397
Year Five	3,202		11,310
Prior	15,667		5,544
Term Total	75,240		74,012
Revolving	17,743		19,609
Total	92,983		93,621
Pass | Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	3,747		1,599
Year Two	1,550		114
Year Three	103		1,640
Year Four	1,550		1,647
Year Five	1,192		651
Prior	528		0
Term Total	8,670		5,651
Revolving	582,436		525,179
Total	591,106		530,830
Pass | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	26,773		151,920
Year Two	157,729		157,276
Year Three	148,366		173,274
Year Four	156,661		58,591
Year Five	52,864		32,909
Prior	54,564		28,582
Term Total	596,957		602,552
Revolving	173,657		164,106
Total	770,614		766,658
Pass | Construction and land development loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	16,094		23,264
Year Two	24,839		69,737
Year Three	58,263		43,228
Year Four	40,754		2,566
Year Five	24,140		0
Prior	0		0
Term Total	164,090		138,795
Revolving	458,160		426,577
Total	622,250		565,372
Pass | Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	29,473		98,847
Year Two	99,197		138,299
Year Three	124,885		120,191
Year Four	118,041		143,642
Year Five	140,991		109,451
Prior	222,158		129,051
Term Total	734,745		739,481
Revolving	37,777		35,003
Total	772,522		774,484
Pass | Nonowner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	26,755		152,963
Year Two	156,586		118,517
Year Three	116,164		168,387
Year Four	150,467		101,064
Year Five	104,684		119,612
Prior	170,940		77,497
Term Total	725,596		738,040
Revolving	107,705		110,441
Total	833,301		848,481
Pass | Multifamily loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	38,669		70,497
Year Two	70,356		61,679
Year Three	72,075		11,708
Year Four	7,851		52,995
Year Five	52,921		29,177
Prior	34,930		9,794
Term Total	276,802		235,850
Revolving	62,556		108,486
Total	339,358		344,336
Pass | Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	3,602		14,574
Year Two	15,147		21,241
Year Three	18,955		29,601
Year Four	33,162		23,043
Year Five	22,760		25,192
Prior	42,785		18,312
Term Total	136,411		131,963
Revolving	17,313		24,249
Total	153,724		156,212
Pass | Loans for agricultural production | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	885		15,945
Year Two	15,418		26,704
Year Three	25,757		21,611
Year Four	21,102		24,374
Year Five	23,557		21,446
Prior	21,345		1,450
Term Total	108,064		111,530
Revolving	118,430		118,090
Total	226,494		229,620
Pass | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	4,697		11,104
Year Two	11,361		8,511
Year Three	8,085		9,274
Year Four	8,666		11,278
Year Five	11,024		6,252
Prior	10,284		4,685
Term Total	54,117		51,104
Revolving	6,821		4,299
Total	60,938		55,403
Pass | Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	128		574
Year Two	561		738
Year Three	726		0
Year Four	0		438
Year Five	212		0
Prior	5		5
Term Total	1,632		1,755
Revolving	9,973		10,090
Total	11,605		11,845
Pass | Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	303		79
Year Two	78		971
Year Three	963		234
Year Four	168		109
Year Five	93		0
Prior	0		0
Term Total	1,605		1,393
Revolving	22,044		20,742
Total	23,649		22,135
Special Mention | Other commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	1,842		1,872
Term Total	1,842		1,872
Revolving	0		0
Total	1,842		1,872
Special Mention | Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	997		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	997		0
Revolving	51,128		48,301
Total	52,125		48,301
Special Mention | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	892		3,901
Year Two	7,093		2,614
Year Three	2,324		2,024
Year Four	2,039		1,637
Year Five	1,607		393
Prior	896		1,894
Term Total	14,851		12,463
Revolving	6,419		6,491
Total	21,270		18,954
Special Mention | Construction and land development loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One			603
Year Two			0
Year Three			0
Year Four			0
Year Five			0
Prior			0
Term Total			603
Revolving			0
Total			603
Special Mention | Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	300		6,295
Year Two	6,153		2,728
Year Three	2,621		14,777
Year Four	14,609		0
Year Five	0		619
Prior	3,056		2,488
Term Total	26,739		26,907
Revolving	0		0
Total	26,739		26,907
Special Mention | Nonowner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	588		15,650
Year Three	15,506		108
Year Four	106		5,868
Year Five	0		0
Prior	0		0
Term Total	16,200		21,626
Revolving	1,930		1,895
Total	18,130		23,521
Special Mention | Multifamily loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		307
Year Four	303		0
Year Five	0		0
Prior	0		0
Term Total	303		307
Revolving	0		0
Total	303		307
Special Mention | Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	2,000		122
Year Two	122		209
Year Three	205		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	2,327		331
Revolving	0		0
Total	2,327		331
Special Mention | Loans for agricultural production | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	1,251		1,275
Total	1,251		1,275
Special Mention | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		122
Year Two	121		226
Year Three	223		165
Year Four	163		66
Year Five	64		0
Prior	0		0
Term Total	571		579
Revolving	0		0
Total	571		579
Special Mention | Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		309
Prior	302		0
Term Total	302		309
Revolving	0		0
Total	302		309
Special Mention | Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		475
Year Four	475		0
Year Five	0		157
Prior	131		0
Term Total	606		632
Revolving	0		0
Total	606		632
Substandard | Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		933
Year Four	931		0
Year Five	0		195
Prior	259		219
Term Total	1,190		1,347
Revolving	28,978		25,878
Total	30,168		27,225
Substandard | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	314		0
Year Two	0		2,986
Year Three	3,063		1,598
Year Four	1,594		107
Year Five	105		4,142
Prior	3,946		584
Term Total	9,022		9,417
Revolving	401		406
Total	9,423		9,823
Substandard | Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,737		318
Year Two	315		318
Year Three	311		0
Year Four	0		3,101
Year Five	1,349		1,457
Prior	1,454		0
Term Total	5,166		5,194
Revolving	0		0
Total	5,166		5,194
Substandard | Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	67		71
Term Total	67		71
Revolving	0		0
Total	67		71
Substandard | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		83
Year Three	263		319
Year Four	317		90
Year Five	89		0
Prior	611		629
Term Total	1,280		1,121
Revolving	0		0
Total	1,280		1,121
Substandard | Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		104
Year Three	103		0
Year Four	0		15
Year Five	12		0
Prior	23		81
Term Total	138		200
Revolving	81		118
Total	219		318
Substandard | Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	111		128
Year Three	120		54
Year Four	84		76
Year Five	12		17
Prior	38		0
Term Total	365		275
Revolving	0		0
Total	365		275
Doubtful | Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		3,090
Year Three	3,015		39,994
Year Four	39,994		0
Year Five	0		0
Prior	0		0
Term Total	43,009		43,084
Revolving	0		0
Total	43,009		43,084
Doubtful | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		21
Year Five	21		386
Prior	363		0
Term Total	384		407
Revolving	0		0
Total	384		407
Not Rated | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	512		1,297
Year Two	1,226		1,657
Year Three	1,524		1,149
Year Four	1,028		395
Year Five	302		395
Prior	295		23
Term Total	4,887		4,916
Revolving	0		0
Total	4,887		4,916
Not Rated | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	6,298		28,706
Year Two	29,141		55,641
Year Three	53,471		47,355
Year Four	46,886		34,173
Year Five	32,157		13,543
Prior	34,747		22,396
Term Total	202,700		201,814
Revolving	0		0
Total	202,700		201,814
Not Rated | Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	5,963		21,929
Year Two	18,706		16,134
Year Three	14,296		18,053
Year Four	16,205		4,660
Year Five	3,869		644
Prior	1,847		2,894
Term Total	60,886		64,314
Revolving	147,016		139,351
Total	207,902		203,665
Not Rated | Residential construction loans: | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	130		10,030
Year Two	9,932		1,154
Year Three	762		2,045
Year Four	2,014		1,386
Year Five	1,361		759
Prior	2,069		1,348
Term Total	16,268		16,722
Revolving	0		0
Total	16,268		16,722
Not Rated | Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	4,218		23,508
Year Two	21,526		22,250
Year Three	20,061		11,824
Year Four	10,691		6,688
Year Five	5,990		3,743
Prior	4,828		1,782
Term Total	67,314		69,795
Revolving	10,059		10,930
Total	$ 77,373		$ 80,725