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Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) contract	Jun. 30, 2021 USD ($) contract	Jun. 30, 2022 USD ($) contract	Jun. 30, 2021 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	58	56	137	198
Recorded investment	$ 37,282,000	$ 6,801,000	$ 78,925,000	$ 22,276,000
Net charge-offs	$ 0	$ 0	$ 0	$ 0
Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	30	23	76	68
Recorded investment	$ 31,230,000	$ 4,099,000	$ 59,632,000	$ 11,548,000
Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	23	18	56	58
Recorded investment	$ 8,800,000	$ 2,944,000	$ 27,241,000	$ 8,740,000
Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	7	5	20	10
Recorded investment	$ 22,430,000	$ 1,155,000	$ 32,391,000	$ 2,808,000
Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	7	4	20	15
Recorded investment	$ 3,111,000	$ 943,000	$ 14,254,000	$ 3,472,000
Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2	1	5	6
Recorded investment	$ 690,000	$ 419,000	$ 7,889,000	$ 2,403,000
Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	4	2	11	7
Recorded investment	$ 1,984,000	$ 158,000	$ 3,197,000	$ 660,000
Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	1	4	2
Recorded investment	$ 437,000	$ 366,000	$ 3,168,000	$ 409,000
Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	21	29	41	115
Recorded investment	$ 2,941,000	$ 1,759,000	$ 5,039,000	$ 7,256,000
Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	3	2	10	2
Recorded investment	$ 321,000	$ 331,000	$ 1,442,000	$ 331,000
Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	14	14	25	27
Recorded investment	$ 2,529,000	$ 996,000	$ 3,458,000	$ 1,745,000
Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	4	13	6	86
Recorded investment	$ 91,000	$ 432,000	$ 139,000	$ 5,180,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	36,724,000	5,286,000	67,207,000	12,936,000
Below Market Interest Rate | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	30,964,000	2,925,000	54,968,000	7,412,000
Below Market Interest Rate | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	8,534,000	1,770,000	26,434,000	5,003,000
Below Market Interest Rate | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	22,430,000	1,155,000	28,534,000	2,409,000
Below Market Interest Rate | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	3,111,000	943,000	7,644,000	3,390,000
Below Market Interest Rate | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	690,000	419,000	1,279,000	2,403,000
Below Market Interest Rate | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	1,984,000	158,000	3,197,000	621,000
Below Market Interest Rate | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	437,000	366,000	3,168,000	366,000
Below Market Interest Rate | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	2,649,000	1,418,000	4,595,000	2,134,000
Below Market Interest Rate | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	159,000	331,000	1,176,000	331,000
Below Market Interest Rate | Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	2,490,000	900,000	3,419,000	1,487,000
Below Market Interest Rate | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	187,000	0	316,000
Other Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	558,000	1,515,000	11,718,000	9,340,000
Other Concessions | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	266,000	1,174,000	4,664,000	4,136,000
Other Concessions | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	266,000	1,174,000	807,000	3,737,000
Other Concessions | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	0	3,857,000	399,000
Other Concessions | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	0	6,610,000	82,000
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	0	0	39,000
Other Concessions | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	0	0	0	43,000
Other Concessions | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	292,000	341,000	444,000	5,122,000
Other Concessions | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	162,000	0	266,000	0
Other Concessions | Total consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	39,000	96,000	39,000	258,000
Other Concessions | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	91,000	245,000	139,000	4,864,000
Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	$ 0	$ 0	$ 0	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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