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v3.23.1

Allowance for Loan Losses - Aging Analysis of Past Due Loans (Detail) - USD ($) | Mar. 31, 2023 | Dec. 31, 2022
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | $ 15,968,000 | $ 9,253,000
Total Loans | 2,580,066,000 | 2,546,666,000
Past Due 90 Days and Accruing | 47,000 |
30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 5,615,000 | 4,741,000
60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 7,170,000 | 997,000
90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 3,183,000 | 3,515,000
Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2,564,098,000 | 2,533,028,000
Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 4,385,000
Commercial and Agriculture [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 1,719,000 | 859,000
Total Loans | 271,160,000 | 278,595,000
Commercial and Agriculture [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 834,000 | 247,000
Commercial and Agriculture [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 201,000 | 78,000
Commercial and Agriculture [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 684,000 | 534,000
Commercial and Agriculture [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 269,441,000 | 276,873,000
Commercial and Agriculture [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 863,000.00
Commercial and Agriculture [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 863,000
Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 83,000 | 110,000
Total Loans | 375,825,000 | 371,147,000
Commercial Real Estate Owner Occupied [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 44,000 | 21,000
Commercial Real Estate Owner Occupied [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due |  | 13,000
Commercial Real Estate Owner Occupied [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 39,000 | 76,000
Commercial Real Estate Owner Occupied [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 375,742,000 | 369,049,000
Commercial Real Estate Owner Occupied [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 1,988,000
Commercial Real Estate Owner Occupied [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 1,988,000
Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 8,141,000 | 1,164,000
Total Loans | 1,043,635,000 | 1,018,736,000
Commercial Real Estate Non Owner Occupied [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 347,000 |
Commercial Real Estate Non Owner Occupied [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 6,500,000 |
Commercial Real Estate Non Owner Occupied [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 1,294,000 | 1,164,000
Commercial Real Estate Non Owner Occupied [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 1,035,494,000 | 1,017,453,000
Commercial Real Estate Non Owner Occupied [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 119,000
Commercial Real Estate Non Owner Occupied [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 119,000
Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 4,084,000 | 5,097,000
Total Loans | 560,978,000 | 552,781,000
Residential Real Estate [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2,751,000 | 3,133,000
Residential Real Estate [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 355,000 | 857,000
Residential Real Estate [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 978,000 | 1,107,000
Residential Real Estate [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 556,894,000 | 546,270,000
Residential Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | 1,414,000
Real Estate Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 506,000 | 219,000
Total Loans | 247,253,000 | 243,127,000
Real Estate Construction [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 506,000 |
Real Estate Construction [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due |  | 219,000
Real Estate Construction [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 246,747,000 | 242,908,000
Farm Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due |  | 7,000
Total Loans | 24,040,000 | 24,708,000
Farm Real Estate [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due |  | 7,000
Farm Real Estate [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 24,040,000 | 24,701,000
Lease Financing Receivables [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 1,229,000 | 1,381,000
Total Loans | 37,570,000 | 36,797,000
Past Due 90 Days and Accruing | 47,000 |
Lease Financing Receivables [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 1,032,000 | 1,040,000
Lease Financing Receivables [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 87,000 |
Lease Financing Receivables [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 110,000 | 341,000
Lease Financing Receivables [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due |  | 35,416,000
Purchased Credit-Impaired Loans | 36,341,000 |
Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 206,000 | 416,000
Total Loans | 19,605,000 | 20,775,000
Consumer and Other [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 101,000 | 293,000
Consumer and Other [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 27,000 | 49,000
Consumer and Other [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 78,000 | 74,000
Consumer and Other [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | $ 19,399,000 | 20,358,000
Consumer and Other [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans |  | $ 1,000

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