Allowance for Credit Losses - Summary of Amortized Cost Basis of Nonaccrual Loans and Loans Past due Over 89 Days Still Accruing (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	$ 6,304
Nonaccrual with a related Allowance for Credit Loss	733	$ 1,918
Total Nonaccrual	7,037
Loans past due over 89 days still accuring	213
Agriculture and Farmland [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0
Nonaccrual with a related Allowance for Credit Loss	0
Total Nonaccrual	0
Loans past due over 89 days still accuring	0
Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	191
Nonaccrual with a related Allowance for Credit Loss	0
Total Nonaccrual	191
Loans past due over 89 days still accuring	0
Commercial and Industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	53
Nonaccrual with a related Allowance for Credit Loss	8
Total Nonaccrual	61
Loans past due over 89 days still accuring	58
Multifamily [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0
Nonaccrual with a related Allowance for Credit Loss	0
Total Nonaccrual	0
Loans past due over 89 days still accuring	0
Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	2,465
Nonaccrual with a related Allowance for Credit Loss	83
Total Nonaccrual	2,548
Loans past due over 89 days still accuring	6
Non-owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	948
Nonaccrual with a related Allowance for Credit Loss	281
Total Nonaccrual	1,229
Loans past due over 89 days still accuring	0
First Liens [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	2,346
Nonaccrual with a related Allowance for Credit Loss	361
Total Nonaccrual	2,707
Loans past due over 89 days still accuring	149
Second Liens and Lines of Credit [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	294
Nonaccrual with a related Allowance for Credit Loss	0
Total Nonaccrual	294
Loans past due over 89 days still accuring	0
Municipal [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0
Nonaccrual with a related Allowance for Credit Loss	0
Total Nonaccrual	0
Loans past due over 89 days still accuring	0
Consumer [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	7
Nonaccrual with a related Allowance for Credit Loss	0
Total Nonaccrual	7
Loans past due over 89 days still accuring	$ 0