Loans and ACL - Summary of Recorded Investment of Loans Held for Investment by Internal Loan Grade by Year of Origination Quarterly (Detail) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
2026	$ 111,580	$ 154,101
2025	150,393	35,382
2024	23,968	127,272
2023	108,616	614,904
2022	584,564	279,689
Prior	698,179	478,302
Revolving Loans	174,703	174,862
Total	1,852,003	1,864,512
Current period gross charge-offs	4,940
Current period gross charge-offs 2026	141
Current period gross charge-offs 2025	20
Current period gross charge-offs 2024	64
Current period gross charge-offs 2023	76
Current period gross charge-offs 2022	206
Current period gross charge-offs prior	918
Current period gross charge-offs revolving	3,515
Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	25,918	21,157
2025	23,915	10,607
2024	9,070	12,086
2023	10,370	84,631
2022	71,105	31,587
Prior	42,674	26,681
Revolving Loans	93,537	95,996
Total	276,589	282,745
Current period gross charge-offs	3,856
Current period gross charge-offs 2023	1
Current period gross charge-offs 2022	88
Current period gross charge-offs prior	572
Current period gross charge-offs revolving	3,195
Construction, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	13,732	22,804
2025	17,227	5,186
2024	2,654	2,099
2023	1,931	4,044
2022	3,881	3,821
Prior	11,322	13,722
Revolving Loans	3,864	62
Total	54,611	51,738
Construction, Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	8,534	22,947
2025	18,804	5,258
2024	887	495
2023	53	2,931
2022	566	93
Prior		48
Total	28,844	31,772
Current period gross charge-offs	15
Current period gross charge-offs prior	15
Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	30,060	76,730
2025	80,881	6,055
2024	4,332	34,800
2023	24,973	307,200
2022	303,075	135,169
Prior	359,543	243,933
Revolving Loans	20,514	20,834
Total	823,378	824,721
Current period gross charge-offs	304
Current period gross charge-offs 2022	37
Current period gross charge-offs prior	267
Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	30,569	5,781
2025	5,625	3,536
2024	3,976	66,808
2023	62,757	209,515
2022	200,979	106,962
Prior	281,026	191,630
Revolving Loans	51,898	52,511
Total	636,830	636,743
Current period gross charge-offs	132
Current period gross charge-offs prior	43
Current period gross charge-offs revolving	89
Farmland [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026		62
2025	61	142
2024	140	123
2023	116	987
2022	958	1,279
Prior	2,967	1,821
Revolving Loans	126	166
Total	4,368	4,580
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	2,767	4,620
2025	3,880	4,598
2024	2,909	10,861
2023	8,416	5,596
2022	4,000	778
Prior	647	467
Revolving Loans	4,764	5,293
Total	27,383	32,213
Current period gross charge-offs	633
Current period gross charge-offs 2026	141
Current period gross charge-offs 2025	20
Current period gross charge-offs 2024	64
Current period gross charge-offs 2023	75
Current period gross charge-offs 2022	81
Current period gross charge-offs prior	21
Current period gross charge-offs revolving	231
Risk Grades 1 - 4
Financing Receivable, Credit Quality Indicator [Line Items]
2026	109,318	150,053
2025	143,945	31,347
2024	16,936	118,176
2023	101,236	472,357
2022	454,361	226,966
Prior	584,915	398,339
Revolving Loans	164,158	165,986
Total	1,574,869	1,563,224
Risk Grades 1 - 4 \| Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	25,568	20,395
2025	22,332	9,213
2024	4,921	9,941
2023	8,930	47,850
2022	43,019	16,375
Prior	25,437	20,845
Revolving Loans	87,823	91,849
Total	218,030	216,468
Risk Grades 1 - 4 \| Construction, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	13,440	22,147
2025	17,227	5,186
2024	2,654	2,099
2023	1,931	4,001
2022	3,839	3,139
Prior	5,195	3,417
Revolving Loans	3,864	62
Total	48,150	40,051
Risk Grades 1 - 4 \| Construction, Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	8,534	22,609
2025	18,391	5,258
2024	887	495
2023	53	75
2022	75	93
Prior		48
Total	27,940	28,578
Risk Grades 1 - 4 \| Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	28,515	75,900
2025	77,415	4,500
2024	2,785	29,768
2023	21,273	209,573
2022	208,498	101,178
Prior	283,233	190,435
Revolving Loans	16,433	17,057
Total	638,152	628,411
Risk Grades 1 - 4 \| Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	30,569	4,382
2025	4,756	2,705
2024	3,026	65,443
2023	61,411	204,911
2022	194,825	104,375
Prior	267,706	181,362
Revolving Loans	51,149	51,559
Total	613,442	614,737
Risk Grades 1 - 4 \| Farmland [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2025		142
2024	140
2023		987
2022	958	1,186
Prior	2,877	1,821
Revolving Loans	126	166
Total	4,101	4,302
Risk Grades 1 - 4 \| Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	2,692	4,620
2025	3,824	4,343
2024	2,523	10,430
2023	7,638	4,960
2022	3,147	620
Prior	467	411
Revolving Loans	4,763	5,293
Total	25,054	30,677
Risk Grades 5 - 6
Financing Receivable, Credit Quality Indicator [Line Items]
2026	2,219	3,487
2025	3,228	1,377
2024	4,323	6,868
2023	5,633	103,785
2022	94,103	36,487
Prior	85,658	66,794
Revolving Loans	8,592	6,640
Total	203,756	225,438
Risk Grades 5 - 6 \| Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	350	762
2025	1,583	408
2024	3,190	1,257
2023	1,139	20,110
2022	12,140	2,817
Prior	5,241	3,944
Revolving Loans	4,398	2,465
Total	28,041	31,763
Risk Grades 5 - 6 \| Construction, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	292	657
2023		43
2022	42	677
Prior	6,127	10,094
Total	6,461	11,471
Risk Grades 5 - 6 \| Construction, Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026		338
2025	413
2023		2,544
2022	179
Total	592	2,882
Risk Grades 5 - 6 \| Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	1,545	830
2025	823
2024		5,032
2023	3,700	79,834
2022	80,218	31,472
Prior	67,817	47,824
Revolving Loans	3,897	3,777
Total	158,000	168,769
Risk Grades 5 - 6 \| Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026		838
2025	310	831
2024	950	266
2023	264	928
2022	1,203	1,380
Prior	6,319	4,914
Revolving Loans	296	398
Total	9,342	9,555
Risk Grades 5 - 6 \| Farmland [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026		62
2025	61
2024		123
2023	116
2022		93
Prior	90
Total	267	278
Risk Grades 5 - 6 \| Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	32
2025	38	138
2024	183	190
2023	414	326
2022	321	48
Prior	64	18
Revolving Loans	1
Total	1,053	720
Risk Grade 7
Financing Receivable, Credit Quality Indicator [Line Items]
2026	43	561
2025	3,220	2,658
2024	2,709	2,228
2023	1,747	38,762
2022	36,100	16,236
Prior	27,606	12,779
Revolving Loans	1,953	2,236
Total	73,378	75,460
Risk Grade 7 \| Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2025		986
2024	959	888
2023	301	16,671
2022	15,946	12,395
Prior	11,996	1,502
Revolving Loans	1,316	1,682
Total	30,518	34,124
Risk Grade 7 \| Construction, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022		5
Prior		211
Total		216
Risk Grade 7 \| Construction, Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023		312
2022	312
Total	312	312
Risk Grade 7 \| Commercial [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2025	2,643	1,555
2024	1,547
2023		17,793
2022	14,359	2,519
Prior	8,493	5,674
Revolving Loans	184
Total	27,226	27,541
Risk Grade 7 \| Residential [Member] \| Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026		561
2025	559
2024		1,099
2023	1,082	3,676
2022	4,951	1,207
Prior	7,001	5,354
Revolving Loans	453	554
Total	14,046	12,451
Risk Grade 7 \| Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2026	43
2025	18	117
2024	203	241
2023	364	310
2022	532	110
Prior	116	38
Total	$ 1,276	816
Risk Grade 8
Financing Receivable, Credit Quality Indicator [Line Items]
Prior		390
Total		390
Risk Grade 8 \| Commercial and Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior		390
Total		$ 390

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