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Loans and Allowance - Summary of Troubled Debt Restructurings (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) loan | Sep. 30, 2019 USD ($) loan | Sep. 30, 2020 USD ($) loan | Sep. 30, 2019 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Pre-Modification Recorded Balance | $ 2,640 | $ 195 | $ 4,159 | $ 456
Post-Modification Recorded Balance | $ 2,652 | $ 185 | $ 4,208 | $ 439
Number of Loans | loan | 34 | 3 | 45 | 8
Commercial and industrial loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Pre-Modification Recorded Balance | $ 0 |  | $ 654 |
Post-Modification Recorded Balance | $ 0 |  | $ 654 |
Number of Loans | loan | 0 |  | 3 |
Commercial and farmland |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Pre-Modification Recorded Balance | $ 0 |  | $ 565 |
Post-Modification Recorded Balance | $ 0 |  | $ 565 |
Number of Loans | loan | 0 |  | 2 |
Residential |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Pre-Modification Recorded Balance | $ 2,314 | $ 195 | $ 2,614 | $ 456
Post-Modification Recorded Balance | $ 2,326 | $ 185 | $ 2,663 | $ 439
Number of Loans | loan | 30 | 3 | 36 | 8
Home equity |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Pre-Modification Recorded Balance | $ 307 |  | $ 307 |
Post-Modification Recorded Balance | $ 307 |  | $ 307 |
Number of Loans | loan | 2 |  | 2 |
Individuals' loans for household and other personal expenditures |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Pre-Modification Recorded Balance | $ 19 |  | $ 19 |
Post-Modification Recorded Balance | $ 19 |  | $ 19 |
Number of Loans | loan | 2 |  | 2 |

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 + Details
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- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 + Details
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