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Loans And Allowance For Loan Losses - Troubled Debt Restructurings (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Contract	Dec. 31, 2020 USD ($) Contract	Dec. 31, 2019 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	382	352	380
Total loans	$ 48,932,000	$ 76,615,000	$ 49,859,000
Write-down	$ 0	$ 0	$ 0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	176	174	149
Total loans	$ 27,618,000	$ 28,917,000	$ 28,793,000
Commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	152	152	127
Total loans	$ 20,842,000	$ 22,851,000	$ 18,915,000
Commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	24	22	22
Total loans	$ 6,776,000	$ 6,066,000	$ 9,878,000
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	30	35	34
Total loans	$ 6,392,000	$ 34,579,000	$ 5,590,000
Commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	9	9	8
Total loans	$ 3,130,000	$ 31,099,000	$ 1,548,000
Commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	13	22	18
Total loans	$ 1,254,000	$ 2,874,000	$ 2,825,000
Commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	8	4	8
Total loans	$ 2,008,000	$ 606,000	$ 1,217,000
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	176	143	197
Total loans	$ 14,922,000	$ 13,119,000	$ 15,476,000
Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	18	23	18
Total loans	$ 3,518,000	$ 4,655,000	$ 2,948,000
Consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	55	63	70
Total loans	$ 5,249,000	$ 4,500,000	$ 5,546,000
Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	103	57	109
Total loans	$ 6,155,000	$ 3,964,000	$ 6,982,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	32,801,000	52,550,000	29,299,000
Below Market Interest Rate | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	18,654,000	15,475,000	18,059,000
Below Market Interest Rate | Commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	12,746,000	10,939,000	9,042,000
Below Market Interest Rate | Commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5,908,000	4,536,000	9,017,000
Below Market Interest Rate | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	6,209,000	32,054,000	4,917,000
Below Market Interest Rate | Commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	3,130,000	29,679,000	1,548,000
Below Market Interest Rate | Commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,131,000	1,769,000	2,182,000
Below Market Interest Rate | Commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,948,000	606,000	1,187,000
Below Market Interest Rate | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	7,938,000	5,021,000	6,323,000
Below Market Interest Rate | Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	2,512,000	1,866,000	1,587,000
Below Market Interest Rate | Consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	4,991,000	1,970,000	3,024,000
Below Market Interest Rate | Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	435,000	1,185,000	1,712,000
Other Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	16,131,000	24,065,000	20,560,000
Other Concessions | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	8,964,000	13,442,000	10,734,000
Other Concessions | Commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	8,096,000	11,912,000	9,873,000
Other Concessions | Commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	868,000	1,530,000	861,000
Other Concessions | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	183,000	2,525,000	673,000
Other Concessions | Commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	0	1,420,000	0
Other Concessions | Commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	123,000	1,105,000	643,000
Other Concessions | Commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	60,000	0	30,000
Other Concessions | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	6,984,000	8,098,000	9,153,000
Other Concessions | Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,006,000	2,789,000	1,361,000
Other Concessions | Consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	258,000	2,530,000	2,522,000
Other Concessions | Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5,720,000	2,779,000	5,270,000
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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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