Allowance for Loan Losses - Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans (Detail) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	$ 819
Nonaccrual loans without a related ACL	7,894
Total Nonaccrual loans	8,713	$ 6,507
Interest Income Recognized	16
Commercial and Agriculture [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	362
Nonaccrual loans without a related ACL	1,294
Total Nonaccrual loans	1,656	774
Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	270
Total Nonaccrual loans	270	386
Interest Income Recognized	3
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	306
Nonaccrual loans without a related ACL	899
Total Nonaccrual loans	1,205	1,109
Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	4,391
Total Nonaccrual loans	4,391	3,926
Interest Income Recognized	13
Real Estate Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	203
Total Nonaccrual loans	203	221
Lease Financing Receivables [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	151
Nonaccrual loans without a related ACL	794
Total Nonaccrual loans	945
Consumer and Other [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	43
Total Nonaccrual loans	$ 43	$ 91

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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

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- Definition

Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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