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Loans And Allowance For Loan Losses (Troubled Debt Restructurings) (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) Contract	Dec. 31, 2019 USD ($) Contract	Dec. 31, 2018 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	352	380	217
Total loans	$ 76,615,000	$ 49,859,000	$ 49,827,000
Write-down	$ 0	$ 0	$ 403,000
Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	174	149	62
Total loans	$ 28,917,000	$ 28,793,000	$ 21,058,000
Total commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	152	127	46
Total loans	$ 22,851,000	$ 18,915,000	$ 7,764,000
Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	22	22	16
Total loans	$ 6,066,000	$ 9,878,000	$ 13,294,000
Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	35	34	40
Total loans	$ 34,579,000	$ 5,590,000	$ 16,758,000
Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	9	8	10
Total loans	$ 31,099,000	$ 1,548,000	$ 10,285,000
Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	22	18	25
Total loans	$ 2,874,000	$ 2,825,000	$ 4,495,000
Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	4	8	5
Total loans	$ 606,000	$ 1,217,000	$ 1,978,000
Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	143	197	115
Total loans	$ 13,119,000	$ 15,476,000	$ 12,011,000
Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	23	18	19
Total loans	$ 4,655,000	$ 2,948,000	$ 5,683,000
Total consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	63	70	4
Total loans	$ 4,500,000	$ 5,546,000	$ 511,000
Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	57	109	92
Total loans	$ 3,964,000	$ 6,982,000	$ 5,817,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	52,550,000	29,299,000	29,665,000
Below Market Interest Rate | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	15,475,000	18,059,000	11,396,000
Below Market Interest Rate | Total commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	10,939,000	9,042,000	3,807,000
Below Market Interest Rate | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	4,536,000	9,017,000	7,589,000
Below Market Interest Rate | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	32,054,000	4,917,000	10,673,000
Below Market Interest Rate | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	29,679,000	1,548,000	8,070,000
Below Market Interest Rate | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,769,000	2,182,000	2,481,000
Below Market Interest Rate | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	606,000	1,187,000	122,000
Below Market Interest Rate | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5,021,000	6,323,000	7,596,000
Below Market Interest Rate | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,866,000	1,587,000	5,590,000
Below Market Interest Rate | Total consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,970,000	3,024,000	172,000
Below Market Interest Rate | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,185,000	1,712,000	1,834,000
Other Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	24,065,000	20,560,000	20,162,000
Other Concessions | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	13,442,000	10,734,000	9,662,000
Other Concessions | Total commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	11,912,000	9,873,000	3,957,000
Other Concessions | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,530,000	861,000	5,705,000
Other Concessions | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	2,525,000	673,000	6,085,000
Other Concessions | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,420,000	0	2,215,000
Other Concessions | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,105,000	643,000	2,014,000
Other Concessions | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	0	30,000	1,856,000
Other Concessions | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	8,098,000	9,153,000	4,415,000
Other Concessions | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	2,789,000	1,361,000	93,000
Other Concessions | Total consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	2,530,000	2,522,000	339,000
Other Concessions | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	2,779,000	5,270,000	3,983,000
Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	$ 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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