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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 | Mar. 31, 2024 | Dec. 31, 2023
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Real Estate Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans individually evaluated for expected credit losses | $ 1,349 | $ 1,624
Other Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans individually evaluated for expected credit losses | 9,353 | 4,735
Amortized Cost Basis Of Collateral Dependent Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans individually evaluated allowance for credit losses | 2,658 | 1,265
Commercial and Agriculture [Member] | Other Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans individually evaluated for expected credit losses | 3,899 | 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 | 982 | 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 |  | 308
Commercial Real Estate Owner Occupied [Member] | Other Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans individually evaluated for expected credit losses | 299 |
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 | 32 | 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 |  | 1,167
Commercial Real Estate Non Owner Occupied [Member] | Other Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans individually evaluated for expected credit losses | 3,013 |
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 | 1,349 | 149
Lease Financing Receivable [Member] | Other Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans individually evaluated for expected credit losses | 2,142 | 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 | $ 585 | $ 15

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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