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Loans - Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loans on nonaccrual status
Loans on nonaccrual status	$ 2,495	$ 2,213
Increase in interest income if recognized on nonaccrual loans	165	325	$ 462
Real estate - residential mortgage
Loans on nonaccrual status
Loans on nonaccrual status	1,526	594
Commercial, financial and agricultural | Commercial business lending
Loans on nonaccrual status
Loans on nonaccrual status	11	24
Equity lines
Loans on nonaccrual status
Loans on nonaccrual status	229	883
Consumer
Loans on nonaccrual status
Loans on nonaccrual status	118
Consumer finance
Loans on nonaccrual status
Loans on nonaccrual status	$ 611	$ 712

X

- Definition

Amount of financing receivable on nonaccrual status.

+ 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=118936363&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=119407570&loc=SL82919258-210447

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+ References

No definition available.

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- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
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