Allowance for Credit Losses - Summary of Amortized Cost Basis of Nonaccrual Loans and Loans Past due 90 Days or Greater and Still Accruing (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	$ 12,001	$ 6,304
Nonaccrual with a related Allowance for Credit Loss	4,882	733
Total Nonaccrual	16,883	7,037
Loans 90 days or greater past due still accruing	495	213
Agriculture and Farmland [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0	0
Nonaccrual with a related Allowance for Credit Loss	0	0
Total Nonaccrual	0	0
Loans 90 days or greater past due still accruing	0	0
Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	10	191
Nonaccrual with a related Allowance for Credit Loss	0	0
Total Nonaccrual	10	191
Loans 90 days or greater past due still accruing	87	0
Commercial and Industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	112	53
Nonaccrual with a related Allowance for Credit Loss	100	8
Total Nonaccrual	212	61
Loans 90 days or greater past due still accruing	199	58
Multifamily [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0	0
Nonaccrual with a related Allowance for Credit Loss	0	0
Total Nonaccrual	0	0
Loans 90 days or greater past due still accruing	0	0
Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	9,114	2,465
Nonaccrual with a related Allowance for Credit Loss	680	83
Total Nonaccrual	9,794	2,548
Loans 90 days or greater past due still accruing	0	6
Non-owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	401	948
Nonaccrual with a related Allowance for Credit Loss	3,952	281
Total Nonaccrual	4,353	1,229
Loans 90 days or greater past due still accruing	0	0
First Liens [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	1,980	2,346
Nonaccrual with a related Allowance for Credit Loss	0	361
Total Nonaccrual	1,980	2,707
Loans 90 days or greater past due still accruing	209	149
Second Liens and Lines of Credit [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	382	294
Nonaccrual with a related Allowance for Credit Loss	0	0
Total Nonaccrual	382	294
Loans 90 days or greater past due still accruing	0	0
Municipal [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0	0
Nonaccrual with a related Allowance for Credit Loss	0	0
Total Nonaccrual	0	0
Loans 90 days or greater past due still accruing	0	0
Consumer [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	2	7
Nonaccrual with a related Allowance for Credit Loss	150	0
Total Nonaccrual	152	7
Loans 90 days or greater past due still accruing	$ 0	$ 0