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Loans, Lease Receivables, and Allowance for Credit Losses - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Financing Receivable, Recorded Investment |  |  |  |  |
Guaranteed portion of SBA loans sold to third parties | $ 4,600,000 | $ 10,700,000 | $ 10,300,000 | $ 20,500,000 |
Amount of outstanding SBA loans sold | 74,600,000 |  | 74,600,000 |  | $ 84,200,000
Loans and leases transferred to third parties principal amount | 31,400,000 | $ 39,200,000 | 90,000,000 | 93,900,000 |
Gain (loss) recognized on participation interest in originated loans |  |  | 0 |  |
Amount of loan participation purchased | 2,200,000 |  | 2,200,000 |  | 0
Amount of outstanding loans transferred to third parties as loan participations | 332,000,000 |  | 332,000,000 |  | 279,500,000
Amount of partial ownership in loan participations transferred | 390,100,000 |  | 390,100,000 |  | 367,400,000
Loans in the participation sold portfolio, considered impaired, gross amount | $ 0 |  | 0 |  | $ 0
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount |  |  | 8,225,000 | 716,000 |
Commercial and Industrial |  |  |  |  |
Financing Receivable, Recorded Investment |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount |  |  | 2,324,000 | 716,000 |
Commercial Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount |  |  | $ 5,901,000 | $ 0 |

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