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Allowance for Credit Losses - Schedule of Amortized Cost Basis of Collateral Dependent Loans Individually Evaluated Expected Credit Losses and Related Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated for expected credit losses	$ 13,058	$ 1,624
Other Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated for expected credit losses	5,195	4,735
Amortized Cost Basis Of Collateral Dependent Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated allowance for credit losses	2,980	1,265
Commercial and Agriculture [Member] | Other Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated for expected credit losses	4,530	4,674
Commercial and Agriculture [Member] | Amortized Cost Basis Of Collateral Dependent Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated allowance for credit losses	1,756	945
Commercial Real Estate Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated for expected credit losses	8,000	308
Commercial Real Estate Owner Occupied [Member] | Amortized Cost Basis Of Collateral Dependent Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated allowance for credit losses	0	37
Commercial Real Estate Non Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated for expected credit losses	3,013	1,167
Commercial Real Estate Non Owner Occupied [Member] | Amortized Cost Basis Of Collateral Dependent Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated allowance for credit losses	1,059	268
Residential Real Estate [Member] | Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated for expected credit losses	2,045	149
Lease Financing Receivable [Member] | Other Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated for expected credit losses	665	61
Lease Financing Receivable [Member] | Amortized Cost Basis Of Collateral Dependent Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans individually evaluated allowance for credit losses	$ 165	$ 15

X

- Definition

Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.5.a)
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 30
-Paragraph 2
-Publisher FASB
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- Definition

Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Section S99
-Paragraph 4
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-URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4

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-Publisher FASB
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