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Loans - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Impaired loans
Impaired loans, troubled debt restructurings	$ 3,000	$ 3,580
Impaired loans, Unpaid Principal Balance	5,984	6,420
Impaired loans, Recorded Investment in Loans without Specific Reserve	556	1,042
Impaired loans, Recorded Investment in Loans with Specific Reserve	5,102	5,236,000
Impaired loans, Related Allowance	891	879
Impaired loans, Average Balance	5,787	6,603
Impaired loans, Interest Income Recognized	35	183
Real estate - residential mortgage
Impaired loans
Impaired loans, Unpaid Principal Balance	1,753	2,326
Impaired loans, Recorded Investment in Loans without Specific Reserve	446	931
Impaired loans, Recorded Investment in Loans with Specific Reserve	1,194	1,279,000
Impaired loans, Related Allowance	69	77
Impaired loans, Average Balance	1,758	2,353
Impaired loans, Interest Income Recognized	17	105
Commercial, financial and agricultural | Commercial real estate lending
Impaired loans
Impaired loans, Unpaid Principal Balance	1,395	1,397
Impaired loans, Recorded Investment in Loans with Specific Reserve	1,395	1,397,000
Impaired loans, Related Allowance	95	89
Impaired loans, Average Balance	1,396	1,404
Impaired loans, Interest Income Recognized	18	73
Commercial, financial and agricultural | Commercial business lending
Impaired loans
Impaired loans, Unpaid Principal Balance	2,430	2,430
Impaired loans, Recorded Investment in Loans with Specific Reserve	2,408	2,428,000
Impaired loans, Related Allowance	625	585
Impaired loans, Average Balance	2,410	2,573
Equity lines
Impaired loans
Impaired loans, Unpaid Principal Balance	120	120
Impaired loans, Recorded Investment in Loans without Specific Reserve	110	111
Impaired loans, Average Balance	117	119
Impaired loans, Interest Income Recognized		2
Consumer
Impaired loans
Impaired loans, Unpaid Principal Balance	286	147
Impaired loans, Recorded Investment in Loans with Specific Reserve	105	132,000
Impaired loans, Related Allowance	102	128
Impaired loans, Average Balance	$ 106	154
Impaired loans, Interest Income Recognized		$ 3

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Financing Receivables Impaired Troubled Debt Restructuring Amount

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
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