Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) contract	Sep. 30, 2021 USD ($) contract	Sep. 30, 2022 USD ($) contract	Sep. 30, 2021 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	38	92	175	290
Recorded investment	$ 14,932,000	$ 15,229,000	$ 93,857,000	$ 37,504,000
Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	26	54	102	122
Recorded investment	$ 10,332,000	$ 9,036,000	$ 69,964,000	$ 20,583,000
Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	22	44	78	102
Recorded investment	$ 6,709,000	$ 6,079,000	$ 33,950,000	$ 14,819,000
Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	4	10	24	20
Recorded investment	$ 3,623,000	$ 2,957,000	$ 36,014,000	$ 5,764,000
Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	5	7	25	22
Recorded investment	$ 4,402,000	$ 1,374,000	$ 18,656,000	$ 4,846,000
Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2	2	7	8
Recorded investment	$ 3,748,000	$ 637,000	$ 11,637,000	$ 3,040,000
Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	3	3	14	10
Recorded investment	$ 654,000	$ 84,000	$ 3,851,000	$ 744,000
Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	2	4	4
Recorded investment	$ 0	$ 653,000	$ 3,168,000	$ 1,062,000
Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	7	31	48	146
Recorded investment	$ 198,000	$ 4,819,000	$ 5,237,000	$ 12,075,000
Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	8	10	10
Recorded investment	$ 0	$ 1,644,000	$ 1,442,000	$ 1,975,000
Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	5	16	30	43
Recorded investment	$ 173,000	$ 2,655,000	$ 3,631,000	$ 4,400,000
Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2	7	8	93
Recorded investment	$ 25,000	$ 520,000	$ 164,000	$ 5,700,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	14,757,000	11,064,000	81,964,000	24,001,000
Below Market Interest Rate | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	10,182,000	5,925,000	65,150,000	13,337,000
Below Market Interest Rate | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	6,559,000	3,437,000	32,993,000	8,440,000
Below Market Interest Rate | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	3,623,000	2,488,000	32,157,000	4,897,000
Below Market Interest Rate | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	4,402,000	1,273,000	12,046,000	4,664,000
Below Market Interest Rate | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	3,748,000	637,000	5,027,000	3,040,000
Below Market Interest Rate | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	654,000	0	3,851,000	621,000
Below Market Interest Rate | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	636,000	3,168,000	1,003,000
Below Market Interest Rate | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	173,000	3,866,000	4,768,000	6,000,000
Below Market Interest Rate | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	1,167,000	1,176,000	1,498,000
Below Market Interest Rate | Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	173,000	2,655,000	3,592,000	4,142,000
Below Market Interest Rate | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	44,000	0	360,000
Other Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	175,000	4,165,000	11,893,000	13,503,000
Other Concessions | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	150,000	3,111,000	4,814,000	7,246,000
Other Concessions | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	150,000	2,642,000	957,000	6,379,000
Other Concessions | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	469,000	3,857,000	867,000
Other Concessions | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	101,000	6,610,000	182,000
Other Concessions | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	0	6,610,000	0
Other Concessions | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	84,000	0	123,000
Other Concessions | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	17,000	0	59,000
Other Concessions | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	25,000	953,000	469,000	6,075,000
Other Concessions | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	477,000	266,000	477,000
Other Concessions | Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	0	39,000	258,000
Other Concessions | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	25,000	476,000	164,000	5,340,000
Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	$ 0	$ 0	$ 0	$ 0