ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Risk Category of Loans by Loan Segment and Origination (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	$ 659,079		$ 659,079		$ 911,943
Year Two	826,490		826,490		653,839
Year Three	589,875		589,875		552,202
Year Four	483,008		483,008		310,151
Year Five	255,899		255,899		126,843
Prior	338,655		338,655		297,056
Term Total	3,153,006		3,153,006		2,852,034
Revolving	1,717,959		1,717,959		1,858,362
Total	4,870,965		4,870,965		4,710,396
2023			1
2022			5,705
2021			105
2020			6
2019			455
Prior			1
Term Total			6,273
Revolving			493
Total	480	$ 373	6,766	$ 1,211
Other commercial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	6,057		6,057		27,097
Year Two	28,024		28,024		4,815
Year Three	39,057		39,057		17,911
Year Four	14,778		14,778		147
Year Five	102		102		931
Prior	10,095		10,095		14,145
Term Total	98,113		98,113		65,046
Revolving	27,640		27,640		48,295
Total	125,753		125,753		113,341
Working capital lines of credit loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			125
Prior			0
Term Total			125
Revolving			161
Total			286
Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	233		233		2,407
Year Two	2,269		2,269		2,718
Year Three	2,417		2,417		1,601
Year Four	1,250		1,250		300
Year Five	139		139		0
Prior	0		0		0
Term Total	6,308		6,308		7,026
Revolving	583,070		583,070		644,013
Total	589,378		589,378		651,039
Non-working capital loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			5,400
2021			0
2020			0
2019			118
Prior			0
Term Total			5,518
Revolving			40
Total			5,558
Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	150,545		150,545		287,443
Year Two	271,335		271,335		128,642
Year Three	94,324		94,324		98,125
Year Four	61,846		61,846		48,427
Year Five	38,521		38,521		11,611
Prior	21,462		21,462		20,633
Term Total	638,033		638,033		594,881
Revolving	174,438		174,438		246,814
Total	812,471		812,471		841,695
Construction and land development loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Construction and land development loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	41,662		41,662		26,889
Year Two	20,498		20,498		19,944
Year Three	10,870		10,870		14,026
Year Four	13,078		13,078		356
Year Five	178		178		0
Prior	0		0		0
Term Total	86,286		86,286		61,215
Revolving	544,725		544,725		453,953
Total	631,011		631,011		515,168
Owner occupied loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	121,854		121,854		116,924
Year Two	136,919		136,919		186,727
Year Three	166,854		166,854		141,371
Year Four	133,527		133,527		98,172
Year Five	67,513		67,513		68,171
Prior	133,281		133,281		105,618
Term Total	759,948		759,948		716,983
Revolving	50,695		50,695		40,533
Total	810,643		810,643		757,516
Nonowner occupied loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Nonowner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	89,728		89,728		194,294
Year Two	176,453		176,453		136,214
Year Three	136,964		136,964		134,661
Year Four	130,626		130,626		91,907
Year Five	88,244		88,244		15,109
Prior	75,139		75,139		64,874
Term Total	697,154		697,154		637,059
Revolving	43,097		43,097		68,603
Total	740,251		740,251		705,662
Multifamily loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Multifamily loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	98,476		98,476		60,315
Year Two	23,445		23,445		25,741
Year Three	9,094		9,094		36,929
Year Four	35,972		35,972		35,695
Year Five	33,621		33,621		2,046
Prior	30,149		30,149		28,866
Term Total	230,757		230,757		189,592
Revolving	5,518		5,518		7,349
Total	236,275		236,275		196,941
Loans secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	20,352		20,352		38,604
Year Two	32,883		32,883		28,684
Year Three	25,842		25,842		31,417
Year Four	27,886		27,886		11,436
Year Five	9,948		9,948		8,145
Prior	20,219		20,219		19,798
Term Total	137,130		137,130		138,084
Revolving	46,102		46,102		63,094
Total	183,232		183,232		201,178
Loans for agricultural production
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Loans for agricultural production | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	27,282		27,282		6,987
Year Two	11,290		11,290		30,505
Year Three	28,082		28,082		29,429
Year Four	26,366		26,366		4,553
Year Five	3,981		3,981		9,248
Prior	11,077		11,077		4,539
Term Total	108,078		108,078		85,261
Revolving	89,311		89,311		145,728
Total	197,389		197,389		230,989
Other commercial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Closed end first mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	53,560		53,560		66,172
Year Two	63,294		63,294		57,140
Year Three	52,256		52,256		32,864
Year Four	27,659		27,659		10,741
Year Five	8,854		8,854		7,098
Prior	31,477		31,477		32,808
Term Total	237,100		237,100		206,823
Revolving	9,674		9,674		5,634
Total	246,774		246,774		212,457
Open end and junior lien loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			50
2021			14
2020			0
2019			0
Prior			0
Term Total			64
Revolving			99
Total			163
Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	22,056		22,056		44,609
Year Two	32,822		32,822		14,138
Year Three	10,021		10,021		3,371
Year Four	2,119		2,119		3,710
Year Five	2,574		2,574		1,600
Prior	2,251		2,251		2,252
Term Total	71,843		71,843		69,680
Revolving	119,657		119,657		107,702
Total	191,500		191,500		177,382
Residential construction loans:
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Term Total			0
Revolving			0
Total			0
Residential construction loans: | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,551		1,551		14,463
Year Two	7,352		7,352		2,167
Year Three	1,546		1,546		897
Year Four	857		857		291
Year Five	269		269		129
Prior	1,230		1,230		1,223
Term Total	12,805		12,805		19,170
Revolving	0		0		0
Total	12,805		12,805		19,170
Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023			1
2022			255
2021			91
2020			6
2019			212
Prior			1
Term Total			566
Revolving			193
Total			759
Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	25,723		25,723		25,739
Year Two	19,906		19,906		16,404
Year Three	12,548		12,548		9,600
Year Four	7,044		7,044		4,416
Year Five	1,955		1,955		2,755
Prior	2,275		2,275		2,300
Term Total	69,451		69,451		61,214
Revolving	24,032		24,032		26,644
Total	93,483		93,483		87,858
Pass | Other commercial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	6,057		6,057		27,097
Year Two	28,024		28,024		4,815
Year Three	39,057		39,057		17,911
Year Four	14,778		14,778		147
Year Five	102		102		931
Prior	7,488		7,488		10,985
Term Total	95,506		95,506		61,886
Revolving	27,640		27,640		48,295
Total	123,146		123,146		110,181
Pass | Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	233		233		2,207
Year Two	1,959		1,959		2,718
Year Three	2,342		2,342		1,601
Year Four	1,250		1,250		0
Year Five	0		0		0
Prior	0		0		0
Term Total	5,784		5,784		6,526
Revolving	509,151		509,151		597,108
Total	514,935		514,935		603,634
Pass | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	147,472		147,472		272,273
Year Two	257,402		257,402		124,600
Year Three	91,572		91,572		91,850
Year Four	54,567		54,567		47,711
Year Five	35,601		35,601		9,981
Prior	15,151		15,151		13,670
Term Total	601,765		601,765		560,085
Revolving	168,621		168,621		240,490
Total	770,386		770,386		800,575
Pass | Construction and land development loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	41,662		41,662		26,889
Year Two	20,498		20,498		19,944
Year Three	10,870		10,870		14,026
Year Four	13,078		13,078		356
Year Five	178		178		0
Prior	0		0		0
Term Total	86,286		86,286		61,215
Revolving	544,725		544,725		453,953
Total	631,011		631,011		515,168
Pass | Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	114,935		114,935		113,656
Year Two	135,960		135,960		179,014
Year Three	158,405		158,405		139,880
Year Four	132,051		132,051		97,353
Year Five	65,426		65,426		65,519
Prior	129,363		129,363		97,335
Term Total	736,140		736,140		692,757
Revolving	36,067		36,067		40,533
Total	772,207		772,207		733,290
Pass | Nonowner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	85,176		85,176		194,294
Year Two	176,453		176,453		125,190
Year Three	130,612		130,612		134,661
Year Four	130,626		130,626		91,907
Year Five	88,244		88,244		15,109
Prior	72,871		72,871		64,874
Term Total	683,982		683,982		626,035
Revolving	43,097		43,097		68,603
Total	727,079		727,079		694,638
Pass | Multifamily loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	78,741		78,741		38,460
Year Two	23,445		23,445		25,741
Year Three	9,094		9,094		36,929
Year Four	35,972		35,972		35,695
Year Five	33,621		33,621		2,046
Prior	30,149		30,149		28,866
Term Total	211,022		211,022		167,737
Revolving	5,518		5,518		7,349
Total	216,540		216,540		175,086
Pass | Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	20,352		20,352		38,344
Year Two	32,883		32,883		28,684
Year Three	25,842		25,842		29,741
Year Four	27,886		27,886		9,656
Year Five	9,940		9,940		8,145
Prior	20,114		20,114		19,638
Term Total	137,017		137,017		134,208
Revolving	46,102		46,102		63,094
Total	183,119		183,119		197,302
Pass | Loans for agricultural production | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	27,282		27,282		6,040
Year Two	11,290		11,290		30,262
Year Three	27,881		27,881		22,167
Year Four	26,015		26,015		3,625
Year Five	3,981		3,981		9,248
Prior	11,077		11,077		4,539
Term Total	107,526		107,526		75,881
Revolving	88,811		88,811		143,599
Total	196,337		196,337		219,480
Pass | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	8,072		8,072		8,768
Year Two	10,663		10,663		12,809
Year Three	12,954		12,954		12,289
Year Four	9,354		9,354		4,805
Year Five	4,476		4,476		4,045
Prior	4,753		4,753		3,860
Term Total	50,272		50,272		46,576
Revolving	9,674		9,674		5,634
Total	59,946		59,946		52,210
Pass | Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	565		565		137
Year Two	137		137		541
Year Three	504		504		357
Year Four	339		339		63
Year Five	0		0		75
Prior	7		7		0
Term Total	1,552		1,552		1,173
Revolving	8,722		8,722		5,841
Total	10,274		10,274		7,014
Pass | Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,908		1,908		1,344
Year Two	808		808		1,841
Year Three	1,505		1,505		432
Year Four	358		358		600
Year Five	0		0		0
Prior	0		0		948
Term Total	4,579		4,579		5,165
Revolving	13,393		13,393		16,152
Total	17,972		17,972		21,317
Special Mention | Other commercial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		0
Year Two	0		0		0
Year Three	0		0		0
Year Four	0		0		0
Year Five	0		0		0
Prior	2,607		2,607		3,160
Term Total	2,607		2,607		3,160
Revolving	0		0		0
Total	2,607		2,607		3,160
Special Mention | Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		0
Year Two	0		0		0
Year Three	0		0		0
Year Four	0		0		0
Year Five	0		0		0
Prior	0		0		0
Term Total	0		0		0
Revolving	67,764		67,764		36,410
Total	67,764		67,764		36,410
Special Mention | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	490		490		448
Year Two	8,926		8,926		1,620
Year Three	1,051		1,051		0
Year Four	2,279		2,279		109
Year Five	2,644		2,644		159
Prior	5,643		5,643		2,961
Term Total	21,033		21,033		5,297
Revolving	5,253		5,253		2,153
Total	26,286		26,286		7,450
Special Mention | Construction and land development 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		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Term Total	0		0
Revolving	0		0
Total	0		0
Special Mention | Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	6,696		6,696		2,960
Year Two	694		694		7,608
Year Three	8,449		8,449		0
Year Four	0		0		446
Year Five	1,735		1,735		1,491
Prior	2,758		2,758		8,054
Term Total	20,332		20,332		20,559
Revolving	14,628		14,628		0
Total	34,960		34,960		20,559
Special Mention | Nonowner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	4,552		4,552		0
Year Two	0		0		11,024
Year Three	6,352		6,352		0
Year Four	0		0		0
Year Five	0		0		0
Prior	2,268		2,268		0
Term Total	13,172		13,172		11,024
Revolving	0		0		0
Total	13,172		13,172		11,024
Special Mention | Multifamily loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	19,735		19,735		21,855
Year Two	0		0		0
Year Three	0		0		0
Year Four	0		0		0
Year Five	0		0		0
Prior	0		0		0
Term Total	19,735		19,735		21,855
Revolving	0		0		0
Total	19,735		19,735		21,855
Special Mention | Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		260
Year Two	0		0		0
Year Three	0		0		1,676
Year Four	0		0		1,780
Year Five	8		8		0
Prior	0		0		15
Term Total	8		8		3,731
Revolving	0		0		0
Total	8		8		3,731
Special Mention | Loans for agricultural production | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		947
Year Two	0		0		243
Year Three	201		201		7,262
Year Four	351		351		928
Year Five	0		0		0
Prior	0		0		0
Term Total	552		552		9,380
Revolving	500		500		2,129
Total	1,052		1,052		11,509
Special Mention | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		0
Year Two	0		0		0
Year Three	0		0		552
Year Four	527		527		0
Year Five	0		0		0
Prior	0		0		0
Term Total	527		527		552
Revolving	0		0		0
Total	527		527		552
Substandard | Working capital lines of credit loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		200
Year Two	310		310		0
Year Three	75		75		0
Year Four	0		0		300
Year Five	139		139		0
Prior	0		0		0
Term Total	524		524		500
Revolving	6,155		6,155		10,495
Total	6,679		6,679		10,995
Substandard | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	575		575		11,831
Year Two	2,699		2,699		872
Year Three	689		689		5,021
Year Four	4,036		4,036		194
Year Five	62		62		1,351
Prior	632		632		3,979
Term Total	8,693		8,693		23,248
Revolving	564		564		4,171
Total	9,257		9,257		27,419
Substandard | Owner occupied loans | Commercial Real Estate and Multifamily Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	223		223		308
Year Two	265		265		105
Year Three	0		0		1,491
Year Four	1,476		1,476		373
Year Five	352		352		1,161
Prior	1,160		1,160		229
Term Total	3,476		3,476		3,667
Revolving	0		0		0
Total	3,476		3,476		3,667
Substandard | Loans secured by farmland | Agri-business and agricultural loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		0
Year Two	0		0		0
Year Three	0		0		0
Year Four	0		0		0
Year Five	0		0		0
Prior	105		105		145
Term Total	105		105		145
Revolving	0		0		0
Total	105		105		145
Substandard | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		0
Year Two	0		0		0
Year Three	96		96		0
Year Four	125		125		0
Year Five	0		0		83
Prior	258		258		1,944
Term Total	479		479		2,027
Revolving	0		0		0
Total	479		479		2,027
Substandard | Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		0
Year Two	0		0		0
Year Three	0		0		0
Year Four	0		0		31
Year Five	27		27		49
Prior	48		48		0
Term Total	75		75		80
Revolving	129		129		111
Total	204		204		191
Substandard | Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0		0		0
Year Two	0		0		0
Year Three	0		0		0
Year Four	0		0		210
Year Five	3		3		0
Prior	0		0		0
Term Total	3		3		210
Revolving	0		0		0
Total	3		3		210
Not Rated | Non-working capital loans | Commercial and industrial loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	2,008		2,008		2,891
Year Two	2,308		2,308		1,550
Year Three	1,012		1,012		1,254
Year Four	964		964		413
Year Five	214		214		120
Prior	36		36		23
Term Total	6,542		6,542		6,251
Revolving	0		0		0
Total	6,542		6,542		6,251
Not Rated | Closed end first mortgage loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	45,488		45,488		57,404
Year Two	52,631		52,631		44,331
Year Three	39,206		39,206		20,023
Year Four	17,653		17,653		5,936
Year Five	4,378		4,378		2,970
Prior	26,466		26,466		27,004
Term Total	185,822		185,822		157,668
Revolving	0		0		0
Total	185,822		185,822		157,668
Not Rated | Open end and junior lien loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	21,491		21,491		44,472
Year Two	32,685		32,685		13,597
Year Three	9,517		9,517		3,014
Year Four	1,780		1,780		3,616
Year Five	2,547		2,547		1,476
Prior	2,196		2,196		2,252
Term Total	70,216		70,216		68,427
Revolving	110,806		110,806		101,750
Total	181,022		181,022		170,177
Not Rated | Residential construction loans: | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,551		1,551		14,463
Year Two	7,352		7,352		2,167
Year Three	1,546		1,546		897
Year Four	857		857		291
Year Five	269		269		129
Prior	1,230		1,230		1,223
Term Total	12,805		12,805		19,170
Revolving	0		0		0
Total	12,805		12,805		19,170
Not Rated | Other consumer loans | Consumer 1-4 Family Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	23,815		23,815		24,395
Year Two	19,098		19,098		14,563
Year Three	11,043		11,043		9,168
Year Four	6,686		6,686		3,606
Year Five	1,952		1,952		2,755
Prior	2,275		2,275		1,352
Term Total	64,869		64,869		55,839
Revolving	10,639		10,639		10,492
Total	$ 75,508		$ 75,508		$ 66,331