Loans And Allowance For Credit Losses - Schedule of loans that are individually evaluated for credit losses (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable Impaired [Line Items]
Related Allowance	$ 17,573	$ 14,541
Total Recorded Investment	176,213	150,698
Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	12,626	12,250
Recorded Investment With Allowance	20,983	12,056
Related Allowance	3,791	4,167
Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	13,782	10,374
Total Recorded Investment	142,604	126,392
Commercial [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	5,858	8,398
Total Recorded Investment	23,498	29,440
Commercial [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	1,322	0
Recorded Investment With Allowance	2,810	5,057
Related Allowance	1,363	3,513
Commercial [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	4,495	4,885
Total Recorded Investment	19,366	24,383
Commercial [Member] | C&I [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	5,858	8,398
Total Recorded Investment	22,765	29,382
Commercial [Member] | C&I [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	1,322	0
Recorded Investment With Allowance	2,810	5,057
Related Allowance	1,363	3,513
Commercial [Member] | C&I [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	4,495	4,885
Total Recorded Investment	18,633	24,325
Commercial [Member] | Municipal [Member]
Financing Receivable Impaired [Line Items]
Related Allowance		0
Total Recorded Investment	733	58
Commercial [Member] | Municipal [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Related Allowance		0
Commercial [Member] | Municipal [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance		0
Total Recorded Investment	733	58
Agricultural [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	750	398
Total Recorded Investment	1,459	679
Agricultural [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	57	116
Recorded Investment With Allowance	98	209
Related Allowance	50	122
Agricultural [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	700	276
Total Recorded Investment	1,304	354
Agricultural [Member] | Farm [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	994
Total Recorded Investment	6,166
Agricultural [Member] | Farm [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With Allowance	4,804
Related Allowance	937
Agricultural [Member] | Farm [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	57
Total Recorded Investment	1,362
Real Estate [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	10,901	5,742
Total Recorded Investment	147,768	118,650
Real Estate [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	11,247	12,134
Recorded Investment With Allowance	17,494	6,330
Related Allowance	2,377	531
Real Estate [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	8,524	5,211
Total Recorded Investment	119,027	100,186
Real Estate [Member] | Construction & Development [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2,401	305
Total Recorded Investment	23,989	6,440
Real Estate [Member] | Construction & Development [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	758	577
Recorded Investment With Allowance	686	990
Related Allowance	148	193
Real Estate [Member] | Construction & Development [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2,253	112
Total Recorded Investment	22,545	4,873
Real Estate [Member] | Farm [Member]
Financing Receivable Impaired [Line Items]
Related Allowance		36
Total Recorded Investment		1,663
Real Estate [Member] | Farm [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance		0
Recorded Investment With Allowance		85
Related Allowance		2
Real Estate [Member] | Farm [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance		34
Total Recorded Investment		1,578
Real Estate [Member] | Non - Owner Occupied CRE [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	3,684	2,357
Total Recorded Investment	37,139	38,358
Real Estate [Member] | Non - Owner Occupied CRE [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	1,919	2,062
Recorded Investment With Allowance	6,103	259
Related Allowance	700	16
Real Estate [Member] | Non - Owner Occupied CRE [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2,984	2,341
Total Recorded Investment	29,117	36,037
Real Estate [Member] | Owner Occupied CRE [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1,663	1,600
Total Recorded Investment	42,568	36,206
Real Estate [Member] | Owner Occupied CRE [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	4,661	4,363
Recorded Investment With Allowance	2,161	2,728
Related Allowance	232	91
Real Estate [Member] | Owner Occupied CRE [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1,431	1,509
Total Recorded Investment	35,746	29,115
Real Estate [Member] | Residential [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2,159	1,444
Total Recorded Investment	37,906	35,983
Real Estate [Member] | Residential [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	3,909	5,132
Recorded Investment With Allowance	3,740	2,268
Related Allowance	360	229
Real Estate [Member] | Residential [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1,799	1,215
Total Recorded Investment	30,257	28,583
Consumer [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	64	3
Total Recorded Investment	3,488	1,929
Consumer [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With Allowance	581	460
Related Allowance	1	1
Consumer [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	63	2
Total Recorded Investment	2,907	1,469
Consumer [Member] | Auto [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	4	2
Total Recorded Investment	2,589	1,360
Consumer [Member] | Auto [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With Allowance	464	429
Related Allowance	1	1
Consumer [Member] | Auto [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	3	1
Total Recorded Investment	2,125	931
Consumer [Member] | Non - Auto [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	60	1
Total Recorded Investment	899	569
Consumer [Member] | Non - Auto [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With Allowance	117	31
Related Allowance		0
Consumer [Member] | Non - Auto [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	60	1
Total Recorded Investment	$ 782	$ 538