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Allowance for Credit Losses - Gross Charge-offs of loans by Year of Origination (Details) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Current Period Gross Charge-offs by Origination Year |  |  |
2024 | $ 574,000 | $ 689,000 |
2023 | 2,350,000 | 4,519,000 |
2022 | 5,218,000 | 2,628,000 |
2021 | 2,725,000 | 626,000 |
2020 | 484,000 | 485,000 |
Prior | 649,000 | 615,000 |
Total | 12,000,000 | 9,562,000 |
Collateral dependent loans | 0 |  | $ 0
Demand deposit overdrafts |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
2024 | 193,000 | 199,000,000 |
Commercial real estate |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
2023 |  | 16,000 |
Total |  | 16,000 |
Residential mortgage |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
2024 | 3,000 |  |
Total | 3,000 |  |
Equity lines |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
Prior |  | 8,000 |
Total |  | 8,000 |
Other consumer |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
2024 | 204,000 | 199,000 |
2023 | 19,000 | 25,000 |
2022 | 5,000 |  |
2021 |  | 3,000 |
2020 |  | 2,000 |
Prior | 62,000 | 3,000 |
Total | 290,000 | 232,000 |
Consumer finance |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
Total | 11,707,000 | 9,306,000 |
Consumer finance | Automobiles |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
2024 | 367,000 | 490,000 |
2023 | 2,275,000 | 4,396,000 |
2022 | 5,053,000 | 2,628,000 |
2021 | 2,691,000 | 583,000 |
2020 | 457,000 | 477,000 |
Prior | 573,000 | 567,000 |
Total | 11,416,000 | 9,141,000 |
Consumer finance | Marine and recreational vehicles |  |  |
Current Period Gross Charge-offs by Origination Year |  |  |
2023 | 56,000 | 82,000 |
2022 | 160,000 |  |
2021 | 34,000 | 40,000 |
2020 | 27,000 | 6,000 |
Prior | 14,000 | 37,000 |
Total | $ 291,000 | $ 165,000 |

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- Definition The value of collateral dependent loans which requires repayment substantially through the operation or sale of the collateral and where the borrower is experiencing financial difficulty. + References No definition available. + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
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