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Loans and Allowance - Summary of Troubled Debt Restructurings by Modification (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | $ 3,785 | $ 675
Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 3,193 | 95
Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 252 | 87
Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 340 | 493
Commercial and industrial loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 585 |
Commercial and industrial loans | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 585 |
Commercial and industrial loans | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 |
Commercial and industrial loans | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 |
Construction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 120 |
Construction | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 |
Construction | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 |
Construction | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 120 |
Commercial real estate, owner occupied |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 103 |
Commercial real estate, owner occupied | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 103 |
Commercial real estate, owner occupied | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 |
Commercial real estate, owner occupied | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 |
Residential |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 2,632 | 614
Residential | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 2,253 | 95
Residential | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 159 | 87
Residential | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 220 | 432
Home equity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 329 | 61
Home equity | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 236 | 0
Home equity | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 93 | 0
Home equity | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 | $ 61
Individuals' loans for household and other personal expenditures |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 16 |
Individuals' loans for household and other personal expenditures | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 16 |
Individuals' loans for household and other personal expenditures | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Modification | 0 |
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=121611835&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=121585226&loc=d3e18845-111554 + Details
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