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Loans - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Impaired loans
Impaired loans, troubled debt restructurings	$ 3,580	$ 4,350
Impaired loans, Unpaid Principal Balance	6,420	5,511
Impaired loans, Recorded Investment in Loans without Specific Reserve	1,042	2,227
Impaired loans, Recorded Investment in Loans with Specific Reserve	5,236	3,047
Impaired loans, Related Allowance	879	267
Impaired loans, Average Balance	6,603	5,242
Impaired loans, Interest Income Recognized	183	239
Real estate - residential mortgage
Impaired loans
Impaired loans, Unpaid Principal Balance	2,326	3,891
Impaired loans, Recorded Investment in Loans without Specific Reserve	931	2,192
Impaired loans, Recorded Investment in Loans with Specific Reserve	1,279	1,479
Impaired loans, Related Allowance	77	72
Impaired loans, Average Balance	2,353	3,506
Impaired loans, Interest Income Recognized	105	155
Commercial, financial and agricultural | Commercial real estate lending
Impaired loans
Impaired loans, Unpaid Principal Balance	1,397	1,459
Impaired loans, Recorded Investment in Loans without Specific Reserve		4
Impaired loans, Recorded Investment in Loans with Specific Reserve	1,397	1,447
Impaired loans, Related Allowance	89	77
Impaired loans, Average Balance	1,404	1,581
Impaired loans, Interest Income Recognized	73	82
Commercial, financial and agricultural | Commercial business lending
Impaired loans
Impaired loans, Unpaid Principal Balance	2,430
Impaired loans, Recorded Investment in Loans with Specific Reserve	2,428
Impaired loans, Related Allowance	585
Impaired loans, Average Balance	2,573
Equity lines
Impaired loans
Impaired loans, Unpaid Principal Balance	120	31
Impaired loans, Recorded Investment in Loans without Specific Reserve	111	31
Impaired loans, Average Balance	119	32
Impaired loans, Interest Income Recognized	2	2
Consumer
Impaired loans
Impaired loans, Unpaid Principal Balance	147	130
Impaired loans, Recorded Investment in Loans with Specific Reserve	132	121
Impaired loans, Related Allowance	128	118
Impaired loans, Average Balance	154	$ 123
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.

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-Topic 310
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