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Allowance for Credit Losses - Non-accrual Basis By Loan Class (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | $ 102,139 | $ 47,170
Commercial, financial and agricultural | Domestic | Commercial. |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 1,377 | 30,872
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 51,915 | 299
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 38,645 | 96
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 10,029 | 15,701
Real estate - mortgage | Domestic | Residential: first lien |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | $ 173 | $ 202

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