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Allowance for Loan Losses - Aging Analysis of Past Due Loans (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | $ 3,862 | $ 4,070
Total Loans | 2,328,614 | 1,997,879
Past Due 90 Days and Accruing | 326 |
30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 921 | 2,139
60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 892 | 892
90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2,049 | 1,039
Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2,320,642 | 1,993,519
Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans | 4,110 | 290
Commercial and Agriculture [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 1,119 | 340
Total Loans | 227,387 | 246,502
Commercial and Agriculture [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 423 | 249
Commercial and Agriculture [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2 | 13
Commercial and Agriculture [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 694 | 78
Commercial and Agriculture [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 225,459 | 246,162
Commercial and Agriculture [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans | 809 |
Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 103 | 106
Total Loans | 364,468 | 295,452
Commercial Real Estate Owner Occupied [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 24 |
Commercial Real Estate Owner Occupied [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 79 | 106
Commercial Real Estate Owner Occupied [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 362,595 | 295,346
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 | 1,770 |
Commercial Real Estate Non Owner Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2 | 4
Total Loans | 956,169 | 829,310
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 | 2 | 4
Commercial Real Estate Non Owner Occupied [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 956,047 | 829,306
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 | 120 |
Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2,465 | 3,569
Total Loans | 531,164 | 430,060
Past Due 90 Days and Accruing | 326 |
Residential Real Estate [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 416 | 1,848
Residential Real Estate [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 827 | 879
Residential Real Estate [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 1,222 | 842
Residential Real Estate [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 527,289 | 426,201
Residential Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans | 1,410 | 290
Real Estate Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 202,793 | 157,127
Real Estate Construction [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 202,793 | 157,127
Farm Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Loans | 25,636 | 28,419
Farm Real Estate [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 25,636 | 28,419
Consumer and Other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 173 | 51
Total Loans | 20,997 | 11,009
Consumer and Other [Member] | 30-59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 58 | 42
Consumer and Other [Member] | 60-89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 63 |
Consumer and Other [Member] | 90 Days or Greater Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 52 | 9
Consumer and Other [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 20,823 | $ 10,958
Consumer and Other [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Purchased Credit-Impaired Loans | $ 1 |

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