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Allowance for Credit Losses - Non-accrual Basis By Loan Class (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | $ 169,136,000 | $ 47,170,000 | $ 51,648,000
Non-accrual loans with no credit allowance | 76,313,000 | 6,001,000 |
Reduced interest income on non-accrual loans | 12,661,000 | 6,614,000 | $ 116,000
Commercial, financial and agricultural | Domestic | Commercial |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 52,110,000 | 30,872,000 |
Non-accrual loans with no credit allowance | 51,276,000 | 122,000 |
Commercial real estate | Domestic | Commercial real estate construction development |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 8,195,000 | 15,701,000 |
Non-accrual loans with no credit allowance | 73,000 | 5,400,000 |
Commercial real estate | Domestic | Commercial real estate: farmland & commercial |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 65,733,000 | 299,000 |
Non-accrual loans with no credit allowance | 24,757,000 | 211,000 |
Commercial real estate | Domestic | Commercial real estate: multifamily |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 42,964,000 | 96,000 |
Non-accrual loans with no credit allowance | 73,000 | 96,000 |
Real estate - mortgage | Domestic | Residential First Lien |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 134,000 | 202,000 |
Non-accrual loans with no credit allowance | $ 134,000 | $ 172,000 |

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