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Loans and Allowance - Summary of Troubled Debt Restructurings by Modification (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | $ 675 | $ 777
Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 95 | 249
Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 87 | 289
Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 493 | 239
Commercial and farmland |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | 85
Commercial and farmland | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | 85
Commercial and farmland | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | 0
Commercial and farmland | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | 0
Residential |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 614 | 448
Residential | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 95 | 0
Residential | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 87 | 209
Residential | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 432 | 239
Home equity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 61 | 180
Home equity | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 | 106
Home equity | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 | 74
Home equity | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | $ 61 | 0
Individuals' loans for household and other personal expenditures |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | 64
Individuals' loans for household and other personal expenditures | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | 58
Individuals' loans for household and other personal expenditures | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | 6
Individuals' loans for household and other personal expenditures | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification |  | $ 0

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- Definition Amount of financing receivable modified as troubled debt restructuring. + 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=118936363&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554 + Details
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