LOANS HELD FOR INVESTMENT, Amortized Cost Basis of Loans by Credit Quality Indicator and Origination Year and Gross Charge-offs (Details) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2024 USD ($) Point		Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Credit Quality Indicators [Abstract]
Number of points on a grading scale for loans | Point	13
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
Loans	$ 3,011,799			$ 3,014,153
Current Period Gross Charge-offs [Abstract]
2024	62			574
Current period gross charge-offs	1,139		$ 939
Minimum [Member]
Credit Quality Indicators [Abstract]
Non-accrual loans with direct exposure analyzed for individual evaluation	250
Past due accruing loans closely monitored	100
Substandard [Member] | Minimum [Member]
Credit Quality Indicators [Abstract]
Accruing loans with direct exposure that are closely monitored	1,000
Commercial Real Estate [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	36,646			254,766
2023	269,179			324,683
2022	333,666			210,363
2021	204,132			64,036
2020	50,405			48,137
2019	209,316			175,229
Revolving loans	6,939			3,842
Loans	1,110,283			1,081,056
Current Period Gross Charge-offs [Abstract]
2024	0			0
2023	0			0
2022	64			0
2021	0			0
2020	0			0
2019	22			0
Revolving loans	0			0
Current period gross charge-offs	86		0	0
Commercial Real Estate [Member] | Pass [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	36,646			254,766
2023	269,179			324,601
2022	333,666			189,211
2021	178,208			50,660
2020	48,271			47,988
2019	203,508			174,859
Revolving loans	6,939			3,842
Loans	1,076,417			1,045,927
Commercial Real Estate [Member] | Special Mention [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			0
2022	0			0
2021	0			11,677
2020	454			0
2019	5,599			0
Revolving loans	0			0
Loans	6,053			11,677
Commercial Real Estate [Member] | Substandard [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			82
2022	0			21,152
2021	25,924			1,699
2020	1,680			149
2019	209			370
Revolving loans	0			0
Loans	27,813			23,452
Commercial [Member] | Specialized [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	34,312			117,912
2023	87,021			59,195
2022	53,410			58,035
2021	53,539			20,276
2020	18,503			10,395
2019	30,207			22,895
Revolving loans	74,554			83,668
Loans	351,546			372,376
Current Period Gross Charge-offs [Abstract]
2024	0			0
2023	0			0
2022	0			0
2021	0			11
2020	0			0
2019	0			0
Revolving loans	0			0
Current period gross charge-offs	0		0	11
Commercial [Member] | Specialized [Member] | Pass [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	34,312			117,912
2023	86,809			56,152
2022	50,711			57,839
2021	53,529			19,883
2020	18,133			10,376
2019	29,576			22,758
Revolving loans	74,554			83,368
Loans	347,624			368,288
Commercial [Member] | Specialized [Member] | Special Mention [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			2,938
2022	2,595			0
2021	0			0
2020	0			0
2019	0			0
Revolving loans	0			300
Loans	2,595			3,238
Commercial [Member] | Specialized [Member] | Substandard [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	212			105
2022	104			196
2021	10			393
2020	370			19
2019	631			137
Revolving loans	0			0
Loans	1,327			850
Commercial [Member] | General [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	14,247			89,112
2023	84,594			131,557
2022	126,307			95,633
2021	94,469			36,021
2020	34,933			48,409
2019	100,596			71,997
Revolving loans	72,430			44,632
Loans	527,576			517,361
Current Period Gross Charge-offs [Abstract]
2024	0			0
2023	123			47
2022	210			50
2021	4			33
2020	0			18
2019	38			321
Revolving loans	0			0
Current period gross charge-offs	375		199	469
Commercial [Member] | General [Member] | Pass [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	14,247			88,911
2023	84,488			128,627
2022	123,542			90,957
2021	89,825			35,794
2020	34,812			45,660
2019	99,454			68,990
Revolving loans	71,815			44,131
Loans	518,183			503,070
Commercial [Member] | General [Member] | Special Mention [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			0
2022	0			0
2021	0			0
2020	0			0
2019	0			1,565
Revolving loans	250			250
Loans	250			1,815
Commercial [Member] | General [Member] | Substandard [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			201
2023	106			2,930
2022	2,765			4,676
2021	4,644			227
2020	121			2,749
2019	1,142			1,442
Revolving loans	365			251
Loans	9,143			12,476
Consumer [Member] | 1-4 Family Residential [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	23,811			114,273
2023	110,421			156,931
2022	154,974			110,857
2021	108,924			52,648
2020	51,120			35,103
2019	91,236			61,149
Revolving loans	4,630			3,770
Loans	545,116			534,731
Current Period Gross Charge-offs [Abstract]
2024	0			0
2023	0			0
2022	121			1
2021	51			0
2020	0			0
2019	0			0
Revolving loans	0			0
Current period gross charge-offs	172		0	1
Consumer [Member] | 1-4 Family Residential [Member] | Pass [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	23,811			113,897
2023	110,045			156,549
2022	154,624			106,619
2021	104,760			51,940
2020	50,440			31,345
2019	83,667			56,666
Revolving loans	4,583			3,770
Loans	531,930			520,786
Consumer [Member] | 1-4 Family Residential [Member] | Special Mention [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			0
2022	0			0
2021	0			0
2020	0			0
2019	0			0
Revolving loans	0			0
Loans	0			0
Consumer [Member] | 1-4 Family Residential [Member] | Substandard [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			376
2023	376			382
2022	350			4,238
2021	4,164			708
2020	680			3,758
2019	7,569			4,483
Revolving loans	47			0
Loans	13,186			13,945
Consumer [Member] | Auto Loans [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	19,810			106,165
2023	98,235			124,777
2022	111,642			48,885
2021	42,574			16,584
2020	13,805			6,893
2019	6,323			1,967
Revolving loans	0			0
Loans	292,389			305,271
Current Period Gross Charge-offs [Abstract]
2024	0			113
2023	65			377
2022	119			254
2021	26			14
2020	8			49
2019	6			81
Revolving loans	0			0
Current period gross charge-offs	224		254	888
Consumer [Member] | Auto Loans [Member] | Pass [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	19,810			106,149
2023	98,205			124,588
2022	111,516			48,686
2021	42,328			16,524
2020	13,774			6,812
2019	6,236			1,935
Revolving loans	0			0
Loans	291,869			304,694
Consumer [Member] | Auto Loans [Member] | Special Mention [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			0
2022	0			0
2021	0			0
2020	0			0
2019	0			0
Revolving loans	0			0
Loans	0			0
Consumer [Member] | Auto Loans [Member] | Substandard [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			16
2023	30			189
2022	126			199
2021	246			60
2020	31			81
2019	87			32
Revolving loans	0			0
Loans	520			577
Consumer [Member] | Other Consumer [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	6,596			23,719
2023	20,748			26,912
2022	23,552			10,242
2021	8,881			3,200
2020	2,613			2,539
2019	7,732			6,191
Revolving loans	1,576			1,365
Loans	71,698			74,168
Current Period Gross Charge-offs [Abstract]
2024	62	[1]		624	[2]
2023	101	[1]		244	[2]
2022	61	[1]		88	[2]
2021	24	[1]		32	[2]
2020	0	[1]		72	[2]
2019	34	[1]		80	[2]
Revolving loans	0	[1]		0	[2]
Current period gross charge-offs	282	[1]	214	1,140	[2]
Consumer [Member] | Other Consumer [Member] | Pass [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	6,596			23,719
2023	20,664			26,899
2022	23,499			10,198
2021	8,840			3,190
2020	2,605			2,539
2019	7,653			6,107
Revolving loans	1,575			1,364
Loans	71,432			74,016
Consumer [Member] | Other Consumer [Member] | Special Mention [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			0
2022	0			0
2021	0			0
2020	0			0
2019	0			0
Revolving loans	0			0
Loans	0			0
Consumer [Member] | Other Consumer [Member] | Substandard [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	84			13
2022	53			44
2021	41			10
2020	8			0
2019	79			84
Revolving loans	1			1
Loans	266			152
Construction [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	9,642			62,034
2023	63,120			54,244
2022	31,803			6,331
2021	3,455			331
2020	331			0
2019	0			0
Revolving loans	4,840			6,250
Loans	113,191			129,190
Current Period Gross Charge-offs [Abstract]
2024	0			48
2023	0			0
2022	0			271
2021	0			0
2020	0			0
2019	0			0
Revolving loans	0			0
Current period gross charge-offs	0		$ 272	319
Construction [Member] | Pass [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	9,642			61,903
2023	62,805			53,930
2022	31,707			5,511
2021	2,635			331
2020	331			0
2019	0			0
Revolving loans	4,840			6,250
Loans	111,960			127,925
Construction [Member] | Special Mention [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			131
2023	315			0
2022	0			820
2021	820			0
2020	0			0
2019	0			0
Revolving loans	0			0
Loans	1,135			951
Construction [Member] | Substandard [Member]
Amortized Cost Basis in Loans by Credit Quality Indicator and Origination Year [Abstract]
2024	0			0
2023	0			314
2022	96			0
2021	0			0
2020	0			0
2019	0			0
Revolving loans	0			0
Loans	$ 96			$ 314

[1] Includes $62 thousand in charged-off demand deposit overdrafts reported as 2024 originations.

[2] Includes $574 thousand in charged-off demand deposit overdrafts reported as 2023 originations.