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Loans and Allowance - Composition of Impaired Loans by Loan Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Unpaid Principal Balance |  |  |  |  |
Impaired loans with no related allowance | $ 14,777 |  | $ 14,777 |  | $ 9,955
Impaired loans with related allowance | 33,527 |  | 33,527 |  | 5,139
Total Impaired Loans | 48,304 |  | 48,304 |  | 15,094
Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 12,672 |  | 12,672 |  | 7,352
Impaired loans with related allowance | 32,608 |  | 32,608 |  | 4,357
Total Impaired Loans | 45,280 |  | 45,280 |  | 11,709
Related Allowance | 12,999 |  | 12,999 |  | 689
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 12,707 | $ 17,433 | 12,980 | $ 18,112 |
Impaired loans with related allowance | 32,621 | 5,600 | 32,882 | 5,634 |
Total Impaired Loans | 45,328 | 23,033 | 45,862 | 23,746 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance | 38 | 40 | 77 | 80 |
Impaired loans with related allowance | 22 | 19 | 44 | 38 |
Total Impaired Loans | 60 | 59 | 121 | 118 |
Commercial and industrial loans |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
Impaired loans with no related allowance | 5,024 |  | 5,024 |  | 320
Impaired loans with related allowance | 10,342 |  | 10,342 |  |
Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 5,008 |  | 5,008 |  | 320
Impaired loans with related allowance | 10,304 |  | 10,304 |  |
Related Allowance | 7,466 |  | 7,466 |  |
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 5,008 | 1,013 | 5,008 | 1,021 |
Impaired loans with related allowance | 10,304 | 940 | 10,304 | 940 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance | 0 | 0 | 0 | 0 |
Impaired loans with related allowance | 0 |  | 0 | 0 |
Agricultural production financing and other loans to farmers |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
Impaired loans with no related allowance |  |  |  |  | 299
Recorded Investment |  |  |  |  |
Impaired loans with no related allowance |  |  |  |  | 137
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance |  | 668 |  | 672 |
Impaired loans with related allowance |  | 2,117 |  | 2,134 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance |  | 0 |  | 0 |
Construction |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
Impaired loans with no related allowance |  |  |  |  | 1,206
Recorded Investment |  |  |  |  |
Impaired loans with no related allowance |  |  |  |  | 970
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance |  | 7,314 |  | 7,792 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance |  | 0 |  | 0 |
Commercial and farmland |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
Impaired loans with no related allowance | 9,675 |  | 9,675 |  | 8,037
Impaired loans with related allowance | 19,650 |  | 19,650 |  | 2,648
Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 7,602 |  | 7,602 |  | 5,849
Impaired loans with related allowance | 18,910 |  | 18,910 |  | 1,909
Related Allowance | 4,943 |  | 4,943 |  | 231
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 7,637 | 7,998 | 7,910 | 8,187 |
Impaired loans with related allowance | 18,910 | 157 | 19,156 | 164 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance | 37 | 39 | 75 | 78 |
Impaired loans with related allowance |  |  |  | 0 |
Residential |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
Impaired loans with no related allowance | 75 |  | 75 |  | 93
Impaired loans with related allowance | 3,134 |  | 3,134 |  | 2,070
Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 59 |  | 59 |  | 76
Impaired loans with related allowance | 3,009 |  | 3,009 |  | 2,044
Related Allowance | 520 |  | 520 |  | 383
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 59 | 38 | 59 | 38 |
Impaired loans with related allowance | 3,020 | 2,021 | 3,032 | 2,029 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance | 1 | 1 | 2 | 2 |
Impaired loans with related allowance | 19 | 16 | 38 | 32 |
Home equity |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
Impaired loans with related allowance | 401 |  | 401 |  | 417
Recorded Investment |  |  |  |  |
Impaired loans with related allowance | 385 |  | 385 |  | 400
Related Allowance | 70 |  | 70 |  | 75
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance |  | 49 |  | 49 |
Impaired loans with related allowance | 387 | 351 | 390 | 352 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance |  |  |  | 0 |
Impaired loans with related allowance | 3 | 3 | 6 | 6 |
Individuals' loans for household and other personal expenditures |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
Impaired loans with no related allowance | 3 |  | 3 |  |
Impaired loans with related allowance |  |  |  |  | 4
Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | 3 |  | 3 |  |
Impaired loans with related allowance |  |  |  |  | 4
Related Allowance |  |  |  |  | $ 0
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance | $ 3 |  | 3 |  |
Impaired loans with related allowance |  | 14 |  | 15 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance |  |  | $ 0 |  |
Impaired loans with related allowance |  |  |  | 0 |
Public finance and other commercial loans |  |  |  |  |
Average Recorded Investment |  |  |  |  |
Impaired loans with no related allowance |  | 353 |  | 353 |
Interest Income Recognized |  |  |  |  |
Impaired loans with no related allowance |  | $ 0 |  | $ 0 |

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