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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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