Loans and Allowance for Credit Losses - Summary of Recorded Investment of Loans Held for Investment by Internal Loan Grade by Year of Orgination (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 196,370
2022	863,939
2021	357,834
2020	292,593
2019	105,787
Prior	334,975
Revolving Loans	278,619
Total	2,430,117
Current period gross charge-offs	31,819	$ 8,451	$ 2,541
Current period gross charge-offs 2023	3,759
Current period gross charge-offs 2022	22,251
Current period gross charge-offs 2021	1,285
Current period gross charge-offs 2020	2,628
Current period gross charge-offs 2019	1,272
Current period gross charge-offs prior	463
Current period gross charge-offs revolving	161
Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	42,393
2022	189,770
2021	48,823
2020	32,563
2019	9,579
Prior	16,250
Revolving Loans	167,180
Total	506,558
Current period gross charge-offs	27,839	4,779	1,098
Current period gross charge-offs 2023	2,266
Current period gross charge-offs 2022	21,086
Current period gross charge-offs 2021	1,067
Current period gross charge-offs 2020	1,920
Current period gross charge-offs 2019	1,211
Current period gross charge-offs prior	164
Current period gross charge-offs revolving	125
Paycheck Protection Program [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,386
Total	2,386
Construction, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	12,865
2022	96,805
2021	34,144
2020	14,983
2019	6,358
Prior	6,703
Revolving Loans	8,194
Total	180,052
Current period gross charge-offs	36
Current period gross charge-offs 2023	0
Current period gross charge-offs 2019	8
Current period gross charge-offs prior	28
Construction, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	33,464
2022	26,611
2021	3,867
2020	226
2019	941
Prior	67
Revolving Loans	10,656
Total	75,832
Mortgage, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	17,835
2022	305,554
2021	138,497
2020	169,033
2019	55,258
Prior	159,817
Revolving Loans	24,546
Total	870,540
Mortgage, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	63,056
2022	229,954
2021	124,995
2020	72,921
2019	30,942
Prior	149,575
Revolving Loans	58,667
Total	730,110
Current period gross charge-offs	1,630
Current period gross charge-offs 2023	0
Current period gross charge-offs 2022	744
Current period gross charge-offs 2020	648
Current period gross charge-offs prior	206
Current period gross charge-offs revolving	32
Mortgage, Farmland [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	147
2022	729
2021	1,397
2019	1,520
Prior	1,562
Revolving Loans	115
Total	5,470
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26,610
2022	14,516
2021	3,725
2020	2,867
2019	1,189
Prior	1,001
Revolving Loans	9,261
Total	59,169
Current period gross charge-offs	2,314	$ 1,686	$ 1,123
Current period gross charge-offs 2023	1,493
Current period gross charge-offs 2022	421
Current period gross charge-offs 2021	218
Current period gross charge-offs 2020	60
Current period gross charge-offs 2019	53
Current period gross charge-offs prior	65
Current period gross charge-offs revolving	4
Risk Grades 1 - 4
Financing Receivable, Credit Quality Indicator [Line Items]
2023	148,222
2022	736,510
2021	317,608
2020	256,565
2019	88,076
Prior	278,644
Revolving Loans	237,830
Total	2,063,455
Risk Grades 1 - 4 | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	15,830
2022	114,291
2021	29,887
2020	25,429
2019	8,217
Prior	14,200
Revolving Loans	138,267
Total	346,121
Risk Grades 1 - 4 | Paycheck Protection Program [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,386
Total	2,386
Risk Grades 1 - 4 | Construction, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	8,533
2022	85,687
2021	33,344
2020	14,690
2019	6,358
Prior	5,589
Revolving Loans	4,367
Total	158,568
Risk Grades 1 - 4 | Construction, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	31,611
2022	22,734
2021	3,867
2020	59
2019	741
Prior	67
Revolving Loans	10,656
Total	69,735
Risk Grades 1 - 4 | Mortgage, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	14,671
2022	280,479
2021	121,257
2020	144,498
2019	42,226
Prior	123,774
Revolving Loans	20,332
Total	747,237
Risk Grades 1 - 4 | Mortgage, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	51,042
2022	218,375
2021	121,872
2020	69,165
2019	27,877
Prior	132,986
Revolving Loans	55,327
Total	676,644
Risk Grades 1 - 4 | Mortgage, Farmland [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	729
2021	1,397
2019	1,520
Prior	1,562
Revolving Loans	115
Total	5,323
Risk Grades 1 - 4 | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26,535
2022	14,215
2021	3,598
2020	2,724
2019	1,137
Prior	466
Revolving Loans	8,766
Total	57,441
Risk Grades 5 - 6
Financing Receivable, Credit Quality Indicator [Line Items]
2023	47,325
2022	88,599
2021	23,246
2020	28,318
2019	16,070
Prior	37,767
Revolving Loans	31,513
Total	272,838
Risk Grades 5 - 6 | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26,563
2022	40,399
2021	12,759
2020	6,305
2019	819
Prior	1,537
Revolving Loans	19,722
Total	108,104
Risk Grades 5 - 6 | Construction, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	4,213
2022	11,072
2021	760
2020	293
Prior	738
Revolving Loans	3,827
Total	20,903
Risk Grades 5 - 6 | Construction, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,486
2022	2,672
2020	167
2019	200
Total	4,525
Risk Grades 5 - 6 | Mortgage, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	2,841
2022	25,075
2021	9,038
2020	19,597
2019	12,921
Prior	27,778
Revolving Loans	4,214
Total	101,464
Risk Grades 5 - 6 | Mortgage, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	12,014
2022	9,339
2021	677
2020	1,944
2019	2,122
Prior	7,281
Revolving Loans	3,255
Total	36,632
Risk Grades 5 - 6 | Mortgage, Farmland [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	147
Total	147
Risk Grades 5 - 6 | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	61
2022	42
2021	12
2020	12
2019	8
Prior	433
Revolving Loans	495
Total	1,063
Risk Grade 7
Financing Receivable, Credit Quality Indicator [Line Items]
2023	823
2022	4,627
2021	14,426
2020	7,710
2019	1,641
Prior	18,184
Revolving Loans	9,276
Total	56,687
Risk Grade 7 | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	877
2021	3,623
2020	829
2019	543
Prior	134
Revolving Loans	9,191
Total	15,197
Risk Grade 7 | Construction, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	119
2022	46
2021	40
Prior	376
Total	581
Risk Grade 7 | Construction, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	367
2022	1,205
Total	1,572
Risk Grade 7 | Mortgage, Commercial [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	323
2022	0
2021	8,202
2020	4,938
2019	111
Prior	8,265
Total	21,839
Risk Grade 7 | Mortgage, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	2,240
2021	2,446
2020	1,812
2019	943
Prior	9,307
Revolving Loans	85
Total	16,833
Risk Grade 7 | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	14
2022	259
2021	115
2020	131
2019	44
Prior	102
Total	665
Risk Grade 8
Financing Receivable, Credit Quality Indicator [Line Items]
2022	34,203
2021	2,554
Prior	380
Total	37,137
Risk Grade 8 | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	34,203
2021	2,554
2020
2019
Prior	379
Revolving Loans
Total	37,136
Risk Grade 8 | Mortgage, Residential [Member] | Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	1
Total	$ 1