Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details)	3 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		79
Amortized cost of loans, modified	$ 61,339,000	$ 41,643,000
Net charge-offs		$ 0
Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		46
Amortized cost of loans, modified	59,348,000	$ 28,402,000
Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		33
Amortized cost of loans, modified	16,617,000	$ 18,441,000
Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		13
Amortized cost of loans, modified	42,731,000	$ 9,961,000
Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		13
Amortized cost of loans, modified	1,339,000	$ 11,143,000
Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		3
Amortized cost of loans, modified	0	$ 7,199,000
Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		7
Amortized cost of loans, modified	1,339,000	$ 1,213,000
Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		3
Amortized cost of loans, modified	0	$ 2,731,000
Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		20
Amortized cost of loans, modified	652,000	$ 2,098,000
Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		7
Amortized cost of loans, modified	113,000	$ 1,121,000
Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		11
Amortized cost of loans, modified	103,000	$ 929,000
Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		2
Amortized cost of loans, modified	$ 436,000	$ 48,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		30,483,000
Below Market Interest Rate | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		24,004,000
Below Market Interest Rate | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		17,900,000
Below Market Interest Rate | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		6,104,000
Below Market Interest Rate | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		4,533,000
Below Market Interest Rate | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		589,000
Below Market Interest Rate | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		1,213,000
Below Market Interest Rate | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		2,731,000
Below Market Interest Rate | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		1,946,000
Below Market Interest Rate | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		1,017,000
Below Market Interest Rate | Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		929,000
Below Market Interest Rate | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		0
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		11,160,000
Term Extension | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		4,398,000
Term Extension | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		541,000
Term Extension | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		3,857,000
Term Extension | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		6,610,000
Term Extension | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		6,610,000
Term Extension | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		0
Term Extension | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		0
Term Extension | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		152,000
Term Extension | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		104,000
Term Extension | Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		0
Term Extension | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		48,000
Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans, modified		$ 0