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Loans - Impaired Loans (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Impaired loans |  |
Impaired loans, troubled debt restructurings | $ 2,700 | $ 3,580
Impaired loans, Unpaid Principal Balance | 5,377 | 6,420
Impaired loans, Recorded Investment in Loans without Specific Reserve | 510 | 1,042
Impaired loans, Recorded Investment in Loans with Specific Reserve | 4,670 | 5,236,000
Impaired loans, Related Allowance | 417 | 879
Impaired loans, Average Balance | 5,395 | 6,603
Impaired loans, Interest Income Recognized | 102 | 183
Real estate - residential mortgage |  |
Impaired loans |  |
Impaired loans, Unpaid Principal Balance | 1,550 | 2,326
Impaired loans, Recorded Investment in Loans without Specific Reserve | 402 | 931
Impaired loans, Recorded Investment in Loans with Specific Reserve | 1,042 | 1,279,000
Impaired loans, Related Allowance | 68 | 77
Impaired loans, Average Balance | 1,566 | 2,353
Impaired loans, Interest Income Recognized | 47 | 105
Commercial, financial and agricultural | Commercial real estate lending |  |
Impaired loans |  |
Impaired loans, Unpaid Principal Balance | 1,391 | 1,397
Impaired loans, Recorded Investment in Loans with Specific Reserve | 1,393 | 1,397,000
Impaired loans, Related Allowance | 86 | 89
Impaired loans, Average Balance | 1,394 | 1,404
Impaired loans, Interest Income Recognized | 54 | 73
Commercial, financial and agricultural | Commercial business lending |  |
Impaired loans |  |
Impaired loans, Unpaid Principal Balance | 2,318 | 2,430
Impaired loans, Recorded Investment in Loans with Specific Reserve | 2,235 | 2,428,000
Impaired loans, Related Allowance | 263 | 585
Impaired loans, Average Balance | 2,320 | 2,573
Equity lines |  |
Impaired loans |  |
Impaired loans, Unpaid Principal Balance | 118 | 120
Impaired loans, Recorded Investment in Loans without Specific Reserve | 108 | 111
Impaired loans, Average Balance | 115 | 119
Impaired loans, Interest Income Recognized | $ 1 | 2
Consumer |  |
Impaired loans |  |
Impaired loans, Unpaid Principal Balance |  | 147
Impaired loans, Recorded Investment in Loans with Specific Reserve |  | 132,000
Impaired loans, Related Allowance |  | 128
Impaired loans, Average Balance |  | 154
Impaired loans, Interest Income Recognized |  | $ 3

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