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Loans, Recorded Investment in Loan Classes Based on Payment Activity, By Origination Year (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
Total loans | $ 2,331,002 |  | $ 2,331,002 |  | $ 2,248,836
Financing Receivable, Current period gross charge-offs by Portfolio Class and Origination Year [Abstract] |  |  |  |  |
Gross charge-offs | 1,212 | $ 808 | 2,568 | $ 819 |
Residential Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 7,235 |  | 7,235 |  | 19,082
2023/2022 | 22,622 |  | 22,622 |  | 94,105
2022/2021 | 90,476 |  | 90,476 |  | 48,540
2021/2020 | 47,282 |  | 47,282 |  | 30,336
2020/2019 | 28,491 |  | 28,491 |  | 18,923
Prior | 107,373 |  | 107,373 |  | 99,213
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total loans | 303,479 |  | 303,479 |  | 310,199
Financing Receivable, Current period gross charge-offs by Portfolio Class and Origination Year [Abstract] |  |  |  |  |
2024/2023 |  |  | 0 |  | 0
2023/2022 |  |  | 0 |  | 0
2022/2021 |  |  | 0 |  | 0
2021/2020 |  |  | 0 |  | 0
2020/2019 |  |  | 0 |  | 0
Prior |  |  | 4 |  | 1
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Gross charge-offs |  |  | 4 |  | 1
Residential Real Estate [Member] | Performing [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 7,235 |  | 7,235 |  | 19,082
2023/2022 | 22,622 |  | 22,622 |  | 93,706
2022/2021 | 90,094 |  | 90,094 |  | 47,774
2021/2020 | 46,422 |  | 46,422 |  | 29,940
2020/2019 | 28,023 |  | 28,023 |  | 18,923
Prior | 106,310 |  | 106,310 |  | 97,813
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total loans | 300,706 |  | 300,706 |  | 307,238
Residential Real Estate [Member] | Nonperforming [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 0 |  | 0 |  | 0
2023/2022 | 0 |  | 0 |  | 399
2022/2021 | 382 |  | 382 |  | 766
2021/2020 | 860 |  | 860 |  | 396
2020/2019 | 468 |  | 468 |  | 0
Prior | 1,063 |  | 1,063 |  | 1,400
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total loans | 2,773 |  | 2,773 |  | 2,961
Home Equity [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 2,300 |  | 2,300 |  | 3,877
2023/2022 | 3,628 |  | 3,628 |  | 3,008
2022/2021 | 2,508 |  | 2,508 |  | 1,886
2021/2020 | 1,582 |  | 1,582 |  | 1,954
2020/2019 | 1,729 |  | 1,729 |  | 2,462
Prior | 8,599 |  | 8,599 |  | 7,955
Revolving Loans Amortized Cost Basis | 28,985 |  | 28,985 |  | 28,286
Revolving Loans Converted to Term | 444 |  | 444 |  | 363
Total loans | 49,775 |  | 49,775 |  | 49,791
Financing Receivable, Current period gross charge-offs by Portfolio Class and Origination Year [Abstract] |  |  |  |  |
2024/2023 |  |  | 0 |  | 0
2023/2022 |  |  | 0 |  | 0
2022/2021 |  |  | 0 |  | 0
2021/2020 |  |  | 0 |  | 0
2020/2019 |  |  | 0 |  | 0
Prior |  |  | 0 |  | 0
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Gross charge-offs |  |  | 0 |  | 0
Home Equity [Member] | Performing [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 2,300 |  | 2,300 |  | 3,877
2023/2022 | 3,628 |  | 3,628 |  | 3,008
2022/2021 | 2,508 |  | 2,508 |  | 1,886
2021/2020 | 1,582 |  | 1,582 |  | 1,954
2020/2019 | 1,663 |  | 1,663 |  | 2,462
Prior | 8,517 |  | 8,517 |  | 7,883
Revolving Loans Amortized Cost Basis | 28,985 |  | 28,985 |  | 28,219
Revolving Loans Converted to Term | 444 |  | 444 |  | 363
Total loans | 49,627 |  | 49,627 |  | 49,652
Home Equity [Member] | Nonperforming [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 0 |  | 0 |  | 0
2023/2022 | 0 |  | 0 |  | 0
2022/2021 | 0 |  | 0 |  | 0
2021/2020 | 0 |  | 0 |  | 0
2020/2019 | 66 |  | 66 |  | 0
Prior | 82 |  | 82 |  | 72
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 67
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total loans | 148 |  | 148 |  | 139
Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 1,696 |  | 1,696 |  | 1,803
2023/2022 | 1,064 |  | 1,064 |  | 1,000
2022/2021 | 652 |  | 652 |  | 539
2021/2020 | 440 |  | 440 |  | 477
2020/2019 | 348 |  | 348 |  | 557
Prior | 3,482 |  | 3,482 |  | 3,681
Revolving Loans Amortized Cost Basis | 135,381 |  | 135,381 |  | 53,254
Revolving Loans Converted to Term | 1 |  | 1 |  | 5
Total loans | 143,064 |  | 143,064 |  | 61,316
Financing Receivable, Current period gross charge-offs by Portfolio Class and Origination Year [Abstract] |  |  |  |  |
2024/2023 |  |  | 0 |  | 0
2023/2022 |  |  | 10 |  | 0
2022/2021 |  |  | 25 |  | 0
2021/2020 |  |  | 0 |  | 0
2020/2019 |  |  | 0 |  | 1
Prior |  |  | 5 |  | 341
Revolving Loans Amortized Cost Basis |  |  | 22 |  | 23
Revolving Loans Converted to Term |  |  | 0 |  | 0
Gross charge-offs |  |  | 62 |  | 365
Consumer [Member] | Performing [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 1,696 |  | 1,696 |  | 1,803
2023/2022 | 1,060 |  | 1,060 |  | 979
2022/2021 | 650 |  | 650 |  | 539
2021/2020 | 440 |  | 440 |  | 477
2020/2019 | 342 |  | 342 |  | 557
Prior | 2,627 |  | 2,627 |  | 2,988
Revolving Loans Amortized Cost Basis | 135,381 |  | 135,381 |  | 53,254
Revolving Loans Converted to Term | 1 |  | 1 |  | 5
Total loans | 142,197 |  | 142,197 |  | 60,602
Consumer [Member] | Nonperforming [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 0 |  | 0 |  | 0
2023/2022 | 4 |  | 4 |  | 21
2022/2021 | 2 |  | 2 |  | 0
2021/2020 | 0 |  | 0 |  | 0
2020/2019 | 6 |  | 6 |  | 0
Prior | 855 |  | 855 |  | 693
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total loans | 867 |  | 867 |  | 714
Mortgage, Home Equity, and Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 11,231 |  | 11,231 |  | 24,762
2023/2022 | 27,314 |  | 27,314 |  | 98,113
2022/2021 | 93,636 |  | 93,636 |  | 50,965
2021/2020 | 49,304 |  | 49,304 |  | 32,767
2020/2019 | 30,568 |  | 30,568 |  | 21,942
Prior | 119,454 |  | 119,454 |  | 110,849
Revolving Loans Amortized Cost Basis | 164,366 |  | 164,366 |  | 81,540
Revolving Loans Converted to Term | 445 |  | 445 |  | 368
Total loans | 496,318 |  | 496,318 |  | 421,306
Financing Receivable, Current period gross charge-offs by Portfolio Class and Origination Year [Abstract] |  |  |  |  |
2024/2023 |  |  | 0 |  | 0
2023/2022 |  |  | 10 |  | 0
2022/2021 |  |  | 25 |  | 0
2021/2020 |  |  | 0 |  | 0
2020/2019 |  |  | 0 |  | 1
Prior |  |  | 9 |  | 342
Revolving Loans Amortized Cost Basis |  |  | 22 |  | 23
Revolving Loans Converted to Term |  |  | 0 |  | 0
Gross charge-offs |  |  | 66 |  | 366
Mortgage, Home Equity, and Consumer [Member] | Performing [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 11,231 |  | 11,231 |  | 24,762
2023/2022 | 27,310 |  | 27,310 |  | 97,693
2022/2021 | 93,252 |  | 93,252 |  | 50,199
2021/2020 | 48,444 |  | 48,444 |  | 32,371
2020/2019 | 30,028 |  | 30,028 |  | 21,942
Prior | 117,454 |  | 117,454 |  | 108,684
Revolving Loans Amortized Cost Basis | 164,366 |  | 164,366 |  | 81,473
Revolving Loans Converted to Term | 445 |  | 445 |  | 368
Total loans | 492,530 |  | 492,530 |  | 417,492
Mortgage, Home Equity, and Consumer [Member] | Nonperforming [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
2024/2023 | 0 |  | 0 |  | 0
2023/2022 | 4 |  | 4 |  | 420
2022/2021 | 384 |  | 384 |  | 766
2021/2020 | 860 |  | 860 |  | 396
2020/2019 | 540 |  | 540 |  | 0
Prior | 2,000 |  | 2,000 |  | 2,165
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 67
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total loans | 3,788 |  | 3,788 |  | 3,814
Real Estate Loans [Member] | Residential Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
Total loans | 353,254 |  | 353,254 |  | 359,990
Financing Receivable, Current period gross charge-offs by Portfolio Class and Origination Year [Abstract] |  |  |  |  |
Gross charge-offs | 4 | $ 0 | 4 | $ 1 |
Real Estate Loans [Member] | Home Equity [Member] |  |  |  |  |
Financing Receivable, Credit Exposures by Internally Assigned Grades, by Origination Year [Abstract] |  |  |  |  |
Total loans | $ 49,775 |  | $ 49,775 |  | $ 49,791

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