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Loans, Allowance for Credit Losses, and Asset Quality Information (Schedule of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	$ 12,196
Nonaccrual Loans with an Allowance	19,072
Nonaccrual loans	31,268	$ 35,076
Commercial, financial, and agricultural
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	510
Nonaccrual Loans with an Allowance	9,019
Nonaccrual loans	9,529	9,681
Real estate, commercial | Real estate – construction, land development & other land loans
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	0
Nonaccrual Loans with an Allowance	373
Nonaccrual loans	373	643
Real estate, commercial | Real estate – mortgage – commercial and other
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	10,951
Nonaccrual Loans with an Allowance	4,972
Nonaccrual loans	15,923	17,191
Real estate, mortgage | Real estate – mortgage – residential (1-4 family) first mortgages
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	735
Nonaccrual Loans with an Allowance	3,599
Nonaccrual loans	4,334	6,048
Real estate, mortgage | Real estate – mortgage – home equity loans / lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	0
Nonaccrual Loans with an Allowance	1,018
Nonaccrual loans	1,018	1,333
Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	0
Nonaccrual Loans with an Allowance	91
Nonaccrual loans	$ 91	$ 180

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+ References

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- Definition

Amount of financing receivable on nonaccrual status with no allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (3)

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
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