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Loans and Allowance for Loan Losses - Financial Effect of Loan Modifications Made To Borrowers Experiencing Financial Difficulty (Details) | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Total commercial and industrial | Commercial, financial and agricultural |  |
Troubled Debt Restructuring, Debtor, Current Period [Line Items] |  |
Weighted Average Interest Rate Reduction | 0.00% | 3.30%
Weighted Average Term Extension (in months) | 18 months | 8 months
Total commercial and industrial | Owner-occupied |  |
Troubled Debt Restructuring, Debtor, Current Period [Line Items] |  |
Weighted Average Interest Rate Reduction | 0.00% | 1.70%
Weighted Average Term Extension (in months) | 60 months | 9 months
Total commercial real estate | Investment properties |  |
Troubled Debt Restructuring, Debtor, Current Period [Line Items] |  |
Weighted Average Interest Rate Reduction | 0.00% |
Weighted Average Term Extension (in months) | 12 months |
Total commercial real estate | 1-4 family properties |  |
Troubled Debt Restructuring, Debtor, Current Period [Line Items] |  |
Weighted Average Interest Rate Reduction |  | 0.00%
Weighted Average Term Extension (in months) |  | 12 months
Total consumer | Mortgage Reporting Unit |  |
Troubled Debt Restructuring, Debtor, Current Period [Line Items] |  |
Weighted Average Interest Rate Reduction | 2.30% | 2.20%
Weighted Average Payment Deferral (in months) | 7 years |
Total consumer | Home equity |  |
Troubled Debt Restructuring, Debtor, Current Period [Line Items] |  |
Weighted Average Interest Rate Reduction | 0.00% | 1.10%
Weighted Average Term Extension (in months) | 243 months | 334 months
Total consumer | Other consumer loans |  |
Troubled Debt Restructuring, Debtor, Current Period [Line Items] |  |
Weighted Average Interest Rate Reduction | 2.50% | 3.50%
Weighted Average Term Extension (in months) | 75 months | 68 months

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- Definition Financing Receivable, Modified, Weighted Average Payment Deferral From Modification + References No definition available. + Details
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- Definition Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A + Details
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- Definition Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A + Details
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