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Loans and Allowance for Credit Losses - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 USD ($) loan | Sep. 30, 2023 USD ($) loan | Sep. 30, 2024 USD ($) loan category | Sep. 30, 2023 USD ($) loan | Dec. 31, 2023 USD ($)
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Foreclosed properties held | $ 800 |  | $ 800 |  |
Number of points in internal risk rating system | category |  |  | 9 |  |
Commercial relationship credit review threshold amount | 1,000 |  | $ 1,000 |  |
Nonaccrual loan | 28,556 |  | 28,556 |  | $ 8,267
Liability for unfunded commitments | 1,400 |  | 1,400 |  | 1,000
Charge-offs | 1,392 | $ 8,064 | $ 5,080 | $ 16,611 | 18,479
Number of loans modified in period | loan |  |  | 16 |  |
Release of allowance for credit losses | 959 | (159) | $ 3,210 | 182 |
Number of borrowers with modified loans | loan |  |  | 15 |  |
Total | 475 | 3,122 | $ 5,808 | 19,002 |
Loans defaulted under the restructured terms | 1,864 | 0 | 2,275 | 2,071 |
Total Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total past due | 5,135 | 2,071 | $ 5,135 | 2,071 |
Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number of loans modified in period | loan |  |  | 1 |  |
Total | 0 | 3,122 | $ 5,333 | 19,002 |
Loans defaulted under the restructured terms | 1,864 | 0 | 2,275 | 2,071 |
Unfunded Commitments |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Release of allowance for credit losses | $ 300 |  | $ 500 | (100) |
Business | Government-Guaranteed Collateral | Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number of loans modified in period | loan |  |  | 17 |  |
Minimum |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Percentage of commercial outstanding loan balances | 35.00% |  | 35.00% |  |
Maximum |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Percentage of commercial outstanding loan balances | 40.00% |  | 40.00% |  |
Total commercial |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number foreclosed properties held | loan | 2 |  | 2 |  |
Nonaccrual loan | $ 24,809 |  | $ 24,809 |  | 7,680
Charge-offs | 415 | 4,028 | 2,292 | 4,297 |
Total | 475 | 3,122 | 5,808 | 19,002 |
Loans defaulted under the restructured terms | 1,864 | 0 | 2,275 | 2,071 |
Total commercial | Total Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total past due | 5,135 | 2,071 | 5,135 | 2,071 |
Total commercial | Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total | 0 | 3,122 | 5,333 | 19,002 |
Loans defaulted under the restructured terms | 1,864 | 0 | 2,275 | 2,071 |
Total commercial | Construction loans |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Nonaccrual loan | 13,500 |  | 13,500 |  |
Total commercial | Subprime Consumer Automotive Segment |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Charge-offs | $ 400 |  |  |  |
Charge-off percentage | 29.00% |  |  |  |
Number of loans modified in period | loan | 5 |  |  |  |
Total commercial | Business |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Nonaccrual loan | $ 8,639 |  | 8,639 |  | 6,926
Charge-offs | 415 | 4,028 | 2,292 | 4,297 | 4,572
Total | $ 475 | $ 3,122 | $ 5,808 | $ 7,681 |
Number of modified loans that has defaulted | loan | 3 | 1 | 3 | 1 |
Total past due | $ 2,300 |  | $ 2,300 |  |
Number of past due modified loans | loan | 12 |  | 12 |  |
Loans defaulted under the restructured terms | $ 1,864 | $ 0 | $ 2,275 | $ 2,071 |
Total commercial | Business | Total Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total past due | 5,135 | 2,071 | 5,135 | 2,071 |
Total commercial | Business | Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total | 0 | 3,122 | 5,333 | 7,681 |
Loans defaulted under the restructured terms | $ 1,864 | 0 | $ 2,275 | 2,071 |
Total commercial | Business | Government-Guaranteed Collateral |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number of loans modified in period | loan |  |  | 11 |  |
Total |  |  | $ 5,600 |  |
Total commercial | Business | Government-Guaranteed Collateral | Total Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number of modified loans that has defaulted | loan | 7 |  | 7 |  |
Total past due | $ 4,100 |  | $ 4,100 |  |
Total commercial | Business | Government-Guaranteed Collateral | Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number of loans modified in period | loan |  |  | 16 |  |
Total |  |  | $ 5,100 |  |
Total commercial | Business | Accounts Receivable |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number of loans modified in period | loan |  |  | 1 |  |
Total commercial | Business | Accounts Receivable | Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total |  |  | $ 200 |  |
Residential real estate |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Number foreclosed properties held | loan | 8,000,000 |  | 8,000,000 |  |
Investment in loans in the process of foreclosure | $ 3,400 |  | $ 3,400 |  |
Nonaccrual loan | 3,388 |  | 3,388 |  | 82
Charge-offs | 0 | 359 | 0 | 381 | 400
Total | 0 | 0 | 0 | 0 |
Loans defaulted under the restructured terms | 0 | 0 | 0 | 0 |
Residential real estate | Total Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total past due | 0 | 0 | 0 | 0 |
Residential real estate | Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total | 0 | 0 |  | 0 |
Loans defaulted under the restructured terms | 0 | 0 | 0 | 0 |
Consumer |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Nonaccrual loan | 187 |  | 187 |  | 344
Charge-offs | 977 | 3,677 | 2,788 | 11,933 | $ 13,507
Total | 0 | 0 | 0 | 0 |
Loans defaulted under the restructured terms | 0 | 0 | 0 | 0 |
Consumer | Total Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total past due | 0 | 0 | 0 | 0 |
Consumer | Payment Delay |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Total | 0 | 0 |  | 0 |
Loans defaulted under the restructured terms | 0 | $ 0 | $ 0 | $ 0 |
Consumer | Subprime Consumer Automotive Segment |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Charge-offs | $ 1,000 |  |  |  |
Charge-off percentage | 71.00% |  |  |  |

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