Allowance for Loan Losses - Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	$ 89
Nonaccrual loans without a related ACL	6,891
Total Nonaccrual loans	6,980	$ 6,507
Interest Income Recognized	32
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	12
Nonaccrual loans without a related ACL	945
Total Nonaccrual loans	957	774
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	358
Total Nonaccrual loans	358	386
Interest Income Recognized	3
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	1,294
Total Nonaccrual loans	1,294	1,109
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	3,892
Total Nonaccrual loans	3,892	3,926
Interest Income Recognized	29
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	217
Total Nonaccrual loans	217	221
Lease Financing Receivables [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	61
Total Nonaccrual loans	61
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	77
Nonaccrual loans without a related ACL	124
Total Nonaccrual loans	$ 201	$ 91

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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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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.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
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-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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-Section 50
-Paragraph 16
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-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
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