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Allowance for Loan 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, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | $ 4,041 | $ 624
Loans individually evaluated allowance for credit losses | 469 | 7
Real Estate Loan [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 738 |
Other Loan [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 193 |
Amortized Cost Basis Of Collateral Dependent Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated allowance for credit losses | 89 |
Commercial and Agriculture [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 165 |
Loans individually evaluated allowance for credit losses | 12 |
Commercial and Agriculture [Member] | Real Estate Loan [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 49 |
Commercial and Agriculture [Member] | Other Loan [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 116 |
Commercial and Agriculture [Member] | Amortized Cost Basis Of Collateral Dependent Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated allowance for credit losses | 12 |
Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 1,514 | 232
Loans individually evaluated allowance for credit losses | 7 | 6
Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 119 |
Residential Real Estate [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 1,838 | 392
Loans individually evaluated allowance for credit losses | 2 | $ 1
Residential Real Estate [Member] | Real Estate Loan [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 689 |
Consumer and Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 77 |
Loans individually evaluated allowance for credit losses | 77 |
Consumer and Other [Member] | Other Loan [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated for expected credit losses | 77 |
Consumer and Other [Member] | Amortized Cost Basis Of Collateral Dependent Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans individually evaluated allowance for credit losses | $ 77 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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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. + Details
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