Loans And Allowance For Credit Losses - Schedule of loans that are individually evaluated for credit losses (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable Impaired [Line Items]
Related Allowance	$ 14,541	$ 17,870
Total Recorded Investment	150,698	161,185
Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	12,250	19,955
Recorded Investment With Allowance	12,056	11,697
Related Allowance	4,167	4,184
Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	10,374	13,686
Total Recorded Investment	126,392	129,533
Commercial [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	8,398	6,627
Total Recorded Investment	29,440	24,500
Commercial [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	0	749
Recorded Investment With Allowance	5,057	4,621
Related Allowance	3,513	2,533
Commercial [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	4,885	4,094
Total Recorded Investment	24,383	19,130
Commercial [Member] | C&I [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	8,398	6,627
Total Recorded Investment	29,382	24,391
Commercial [Member] | C&I [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	0	749
Recorded Investment With Allowance	5,057	4,621
Related Allowance	3,513	2,533
Commercial [Member] | C&I [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	4,885	4,094
Total Recorded Investment	24,325	19,021
Commercial [Member] | Municipal [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	0	0
Total Recorded Investment	58	109
Commercial [Member] | Municipal [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	0
Recorded Investment With Allowance	0
Related Allowance	0	0
Commercial [Member] | Municipal [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	0	0
Total Recorded Investment	58	109
Agricultural [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	398	1,445
Total Recorded Investment	679	5,398
Agricultural [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	116	3,026
Recorded Investment With Allowance	209	1,894
Related Allowance	122	1,086
Agricultural [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	276	359
Total Recorded Investment	354	478
Real Estate [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	5,742	9,793
Total Recorded Investment	118,650	129,157
Real Estate [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	12,134	16,180
Recorded Investment With Allowance	6,330	4,629
Related Allowance	531	564
Real Estate [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	5,211	9,229
Total Recorded Investment	100,186	108,348
Real Estate [Member] | Construction & Development [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	305	225
Total Recorded Investment	6,440	5,473
Real Estate [Member] | Construction & Development [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	577	102
Recorded Investment With Allowance	990	606
Related Allowance	193	90
Real Estate [Member] | Construction & Development [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	112	135
Total Recorded Investment	4,873	4,765
Real Estate [Member] | Farm [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	36	2
Total Recorded Investment	1,663	3,142
Real Estate [Member] | Farm [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	0	997
Recorded Investment With Allowance	85	176
Related Allowance	2	0
Real Estate [Member] | Farm [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	34	2
Total Recorded Investment	1,578	1,969
Real Estate [Member] | Non - Owner Occupied CRE [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2,357	4,059
Total Recorded Investment	38,358	34,468
Real Estate [Member] | Non - Owner Occupied CRE [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	2,062	2,543
Recorded Investment With Allowance	259	128
Related Allowance	16	15
Real Estate [Member] | Non - Owner Occupied CRE [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2,341	4,044
Total Recorded Investment	36,037	31,797
Real Estate [Member] | Owner Occupied CRE [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1,600	3,481
Total Recorded Investment	36,206	48,504
Real Estate [Member] | Owner Occupied CRE [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	4,363	6,548
Recorded Investment With Allowance	2,728	1,349
Related Allowance	91	152
Real Estate [Member] | Owner Occupied CRE [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1,509	3,329
Total Recorded Investment	29,115	40,607
Real Estate [Member] | Residential [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1,444	2,026
Total Recorded Investment	35,983	37,570
Real Estate [Member] | Residential [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	5,132	5,990
Recorded Investment With Allowance	2,268	2,370
Related Allowance	229	307
Real Estate [Member] | Residential [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1,215	1,719
Total Recorded Investment	28,583	29,210
Consumer [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	3	5
Total Recorded Investment	1,929	2,130
Consumer [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	0
Recorded Investment With Allowance	460	553
Related Allowance	1	1
Consumer [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2	4
Total Recorded Investment	1,469	1,577
Consumer [Member] | Auto [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	2	4
Total Recorded Investment	1,360	1,675
Consumer [Member] | Auto [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	0
Recorded Investment With Allowance	429	514
Related Allowance	1	1
Consumer [Member] | Auto [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1	3
Total Recorded Investment	931	1,161
Consumer [Member] | Non - Auto [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1	1
Total Recorded Investment	569	455
Consumer [Member] | Non - Auto [Member] | Collateral Pledged [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment With No Allowance	0
Recorded Investment With Allowance	31	39
Related Allowance	0	0
Consumer [Member] | Non - Auto [Member] | Uncollateralized [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	1	1
Total Recorded Investment	$ 538	$ 416