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Loans - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Impaired loans
Impaired loans, troubled debt restructurings	$ 2,180	$ 2,690
Impaired loans, Unpaid Principal Balance	2,685	5,430
Impaired loans, Recorded Investment in Loans without Specific Reserve	467	660
Impaired loans, Recorded Investment in Loans with Specific Reserve	2,117	4,548,000
Impaired loans, Related Allowance	142	655
Impaired loans, Average Balance	2,534	5,329
Impaired loans, Interest Income Recognized	31	140
Real Estate Residential Mortgage
Impaired loans
Impaired loans, Unpaid Principal Balance	1,270	1,689
Impaired loans, Recorded Investment in Loans without Specific Reserve	439	550
Impaired loans, Recorded Investment in Loans with Specific Reserve	729	1,035,000
Impaired loans, Related Allowance	52	63
Impaired loans, Average Balance	1,118	1,560
Impaired loans, Interest Income Recognized	14	64
Commercial, Financial & Agricultural | Commercial real estate lending
Impaired loans
Impaired loans, Unpaid Principal Balance	1,387	1,389
Impaired loans, Recorded Investment in Loans with Specific Reserve	1,388	1,390,000
Impaired loans, Related Allowance	90	103
Impaired loans, Average Balance	1,388	1,393
Impaired loans, Interest Income Recognized	17	72
Commercial, Financial & Agricultural | Commercial business lending
Impaired loans
Impaired loans, Unpaid Principal Balance		2,234
Impaired loans, Recorded Investment in Loans with Specific Reserve		2,123,000
Impaired loans, Related Allowance		489
Impaired loans, Average Balance		2,257
Equity lines
Impaired loans
Impaired loans, Unpaid Principal Balance	28	118
Impaired loans, Recorded Investment in Loans without Specific Reserve	28	110
Impaired loans, Average Balance	$ 28	119
Impaired loans, Interest Income Recognized		$ 4

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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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