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Allowance for Credit Losses - Based On the Most Recent Analysis Performed, the Risk Category of Loans, By Type and Year of Originations (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023 | Dec. 31, 2022
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | $ 8,208 | $ 8,208 | $ 9,253
Current-period gross charge-offs | 666 | 855 |
Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 362,236 | 362,236 |
2022 | 687,480 | 687,480 |
2021 | 459,900 | 459,900 |
2020 | 311,681 | 311,681 |
2019 | 205,418 | 205,418 |
Prior | 444,378 | 444,378 |
Revolving Loans | 283,797 | 283,797 |
Financing Receivable, before Allowance for Credit Loss, Total | 2,754,890 | 2,754,890 |
2023 |  | 1 |
2022 |  | 700 |
2021 |  | 40 |
2020 |  | 6 |
2019 |  | 10 |
Prior |  | 93 |
Revolving Loans, Charge-offs |  | 5 |
Current-period gross charge-offs |  | 855 |
Commercial And Agriculture [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | 3,587 | 3,587 | 859
Current-period gross charge-offs | 614 | 754 |
Commercial And Agriculture [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 61,537 | 61,537 |
2022 | 72,407 | 72,407 |
2021 | 46,780 | 46,780 |
2020 | 14,177 | 14,177 |
2019 | 7,701 | 7,701 |
Prior | 15,747 | 15,747 |
Revolving Loans | 83,528 | 83,528 |
Financing Receivable, before Allowance for Credit Loss, Total | 301,877 | 301,877 |
2022 |  | 673 |
Prior |  | 81 |
Current-period gross charge-offs |  | 754 |
Commercial And Agriculture [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 60,223 | 60,223 |
2022 | 72,407 | 72,407 |
2021 | 46,378 | 46,378 |
2020 | 12,263 | 12,263 |
2019 | 7,418 | 7,418 |
Prior | 15,439 | 15,439 |
Revolving Loans | 79,760 | 79,760 |
Financing Receivable, before Allowance for Credit Loss, Total | 293,888 | 293,888 |
Commercial And Agriculture [Member] | Special Mention [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 906 | 906 |
2021 | 340 | 340 |
2020 | 1,797 | 1,797 |
Prior | 113 | 113 |
Revolving Loans | 176 | 176 |
Financing Receivable, before Allowance for Credit Loss, Total | 3,332 | 3,332 |
Commercial And Agriculture [Member] | Substandard [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 408 | 408 |
2021 | 62 | 62 |
2020 | 117 | 117 |
2019 | 283 | 283 |
Prior | 195 | 195 |
Revolving Loans | 3,592 | 3,592 |
Financing Receivable, before Allowance for Credit Loss, Total | 4,657 | 4,657 |
Commercial And Agriculture [Member] | Doubtful [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2022 | 0 | 0 |
Financing Receivable, before Allowance for Credit Loss, Total | 0 | 0 |
Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | 121 | 121 | 110
Commercial Real Estate Owner Occupied [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 29,262 | 29,262 |
2022 | 82,180 | 82,180 |
2021 | 68,509 | 68,509 |
2020 | 58,121 | 58,121 |
2019 | 33,656 | 33,656 |
Prior | 97,635 | 97,635 |
Revolving Loans | 6,488 | 6,488 |
Financing Receivable, before Allowance for Credit Loss, Total | 375,851 | 375,851 |
Commercial Real Estate Owner Occupied [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 28,733 | 28,733 |
2022 | 81,961 | 81,961 |
2021 | 67,764 | 67,764 |
2020 | 57,827 | 57,827 |
2019 | 30,558 | 30,558 |
Prior | 96,394 | 96,394 |
Revolving Loans | 6,488 | 6,488 |
Financing Receivable, before Allowance for Credit Loss, Total | 369,725 | 369,725 |
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 529 | 529 |
2022 | 219 | 219 |
2021 | 745 | 745 |
2020 | 294 | 294 |
2019 | 3,098 | 3,098 |
Prior | 287 | 287 |
Financing Receivable, before Allowance for Credit Loss, Total | 5,172 | 5,172 |
Commercial Real Estate Owner Occupied [Member] | Substandard [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Prior | 954 | 954 |
Financing Receivable, before Allowance for Credit Loss, Total | 954 | 954 |
Commercial Real Estate Non Owner Occupied [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  |  | 1,164
Commercial Real Estate Non Owner Occupied [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 118,399 | 118,399 |
2022 | 267,696 | 267,696 |
2021 | 202,108 | 202,108 |
2020 | 138,388 | 138,388 |
2019 | 122,046 | 122,046 |
Prior | 230,572 | 230,572 |
Revolving Loans | 23,723 | 23,723 |
Financing Receivable, before Allowance for Credit Loss, Total | 1,102,932 | 1,102,932 |
Commercial Real Estate Non Owner Occupied [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 118,399 | 118,399 |
2022 | 261,880 | 261,880 |
2021 | 195,881 | 195,881 |
2020 | 138,388 | 138,388 |
2019 | 121,917 | 121,917 |
Prior | 219,770 | 219,770 |
Revolving Loans | 23,446 | 23,446 |
Financing Receivable, before Allowance for Credit Loss, Total | 1,079,681 | 1,079,681 |
Commercial Real Estate Non Owner Occupied [Member] | Special Mention [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2022 | 5,816 | 5,816 |
2021 | 6,227 | 6,227 |
Prior | 7,373 | 7,373 |
Revolving Loans | 277 | 277 |
Financing Receivable, before Allowance for Credit Loss, Total | 19,693 | 19,693 |
Commercial Real Estate Non Owner Occupied [Member] | Substandard [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2019 | 129 | 129 |
Prior | 3,429 | 3,429 |
Financing Receivable, before Allowance for Credit Loss, Total | 3,558 | 3,558 |
Residential Portfolio Segment [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | 3,334 | 3,334 | 5,097
Current-period gross charge-offs | 1 | 12 |
Residential Portfolio Segment [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 62,756 | 62,756 |
2022 | 107,004 | 107,004 |
2021 | 96,580 | 96,580 |
2020 | 73,215 | 73,215 |
2019 | 35,767 | 35,767 |
Prior | 83,892 | 83,892 |
Revolving Loans | 155,090 | 155,090 |
Financing Receivable, before Allowance for Credit Loss, Total | 614,304 | 614,304 |
Prior |  | 12 |
Current-period gross charge-offs |  | 12 |
Residential Portfolio Segment [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 62,756 | 62,756 |
2022 | 106,652 | 106,652 |
2021 | 95,914 | 95,914 |
2020 | 73,032 | 73,032 |
2019 | 35,184 | 35,184 |
Prior | 80,593 | 80,593 |
Revolving Loans | 153,753 | 153,753 |
Financing Receivable, before Allowance for Credit Loss, Total | 607,884 | 607,884 |
Residential Portfolio Segment [Member] | Special Mention [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2021 | 224 | 224 |
2020 | 98 | 98 |
Prior | 250 | 250 |
Revolving Loans | 55 | 55 |
Financing Receivable, before Allowance for Credit Loss, Total | 627 | 627 |
Residential Portfolio Segment [Member] | Substandard [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2022 | 352 | 352 |
2021 | 442 | 442 |
2020 | 85 | 85 |
2019 | 583 | 583 |
Prior | 3,049 | 3,049 |
Revolving Loans | 1,282 | 1,282 |
Financing Receivable, before Allowance for Credit Loss, Total | 5,793 | 5,793 |
Real Estate Construction [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  |  | 219
Real Estate Construction [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 62,658 | 62,658 |
2022 | 138,394 | 138,394 |
2021 | 32,839 | 32,839 |
2020 | 17,582 | 17,582 |
2019 | 2,839 | 2,839 |
Prior | 2,708 | 2,708 |
Revolving Loans | 12,271 | 12,271 |
Financing Receivable, before Allowance for Credit Loss, Total | 269,291 | 269,291 |
Real Estate Construction [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 62,658 | 62,658 |
2022 | 137,265 | 137,265 |
2021 | 31,871 | 31,871 |
2020 | 15,563 | 15,563 |
2019 | 2,678 | 2,678 |
Prior | 2,708 | 2,708 |
Revolving Loans | 12,271 | 12,271 |
Financing Receivable, before Allowance for Credit Loss, Total | 265,014 | 265,014 |
Real Estate Construction [Member] | Special Mention [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2022 | 1,129 | 1,129 |
2021 | 926 | 926 |
2020 | 2,019 | 2,019 |
Financing Receivable, before Allowance for Credit Loss, Total | 4,074 | 4,074 |
Real Estate Construction [Member] | Substandard [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2021 | 42 | 42 |
2019 | 161 | 161 |
Financing Receivable, before Allowance for Credit Loss, Total | 203 | 203 |
Farm Real Estate [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  |  | 7
Farm Real Estate [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 816 | 816 |
2022 | 987 | 987 |
2021 | 2,309 | 2,309 |
2020 | 4,552 | 4,552 |
Prior | 13,478 | 13,478 |
Revolving Loans | 1,161 | 1,161 |
Financing Receivable, before Allowance for Credit Loss, Total | 24,109 | 24,109 |
Farm Real Estate [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 816 | 816 |
2022 | 987 | 987 |
2021 | 2,309 | 2,309 |
2020 | 4,552 | 4,552 |
2019 | 806 | 806 |
Prior | 13,295 | 13,295 |
Revolving Loans | 1,161 | 1,161 |
Financing Receivable, before Allowance for Credit Loss, Total | 23,926 | 23,926 |
Farm Real Estate [Member] | Special Mention [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Prior | 183 | 183 |
Financing Receivable, before Allowance for Credit Loss, Total | 183 | 183 |
Lease Financing Receivables [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | 942 | 942 | 1,381
Lease Financing Receivables [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 21,794 | 21,794 |
2022 | 14,071 | 14,071 |
2021 | 6,658 | 6,658 |
2020 | 3,754 | 3,754 |
2019 | 1,964 | 1,964 |
Prior | 18 | 18 |
Financing Receivable, before Allowance for Credit Loss, Total | 48,259 | 48,259 |
Lease Financing Receivables [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 21,794 | 21,794 |
2022 | 14,071 | 14,071 |
2021 | 6,605 | 6,605 |
2020 | 3,754 | 3,754 |
2019 | 1,964 | 1,964 |
Prior | 18 | 18 |
Financing Receivable, before Allowance for Credit Loss, Total | 48,206 | 48,206 |
Lease Financing Receivables [Member] | Doubtful [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2021 | 53 | 53 |
Financing Receivable, before Allowance for Credit Loss, Total | 53 | 53 |
Consumer And Other [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | 224 | 224 | $ 416
Current-period gross charge-offs | 51 | 89 |
Consumer And Other [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 5,014 | 5,014 |
2022 | 4,741 | 4,741 |
2021 | 4,117 | 4,117 |
2020 | 1,892 | 1,892 |
2019 | 639 | 639 |
Prior | 328 | 328 |
Revolving Loans | 1,536 | 1,536 |
Financing Receivable, before Allowance for Credit Loss, Total | 18,267 | 18,267 |
2023 |  | 1 |
2022 |  | 27 |
2021 |  | 40 |
2020 |  | 6 |
2019 |  | 10 |
Revolving Loans, Charge-offs |  | 5 |
Current-period gross charge-offs |  | 89 |
Consumer And Other [Member] | Pass [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2023 | 5,014 | 5,014 |
2022 | 4,741 | 4,741 |
2021 | 4,103 | 4,103 |
2020 | 1,875 | 1,875 |
2019 | 639 | 639 |
Prior | 322 | 322 |
Revolving Loans | 1,536 | 1,536 |
Financing Receivable, before Allowance for Credit Loss, Total | 18,230 | 18,230 |
Consumer And Other [Member] | Substandard [Member] | Term Loans Amortized Cost Basis by Origination Year [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
2021 | 14 | 14 |
2020 | 17 | 17 |
Prior | 6 | 6 |
Financing Receivable, before Allowance for Credit Loss, Total | $ 37 | $ 37 |

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