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Loans and Allowance - Summary of Troubled Debt Restructurings by Modification Type (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) loan | Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Pre- Modification Recorded Balance | $ 87 | $ 1,519 | $ 1,060 | $ 1,519
Post - Modification Recorded Balance | $ 87 | $ 1,556 | $ 1,062 | $ 1,556
Number of Loans | loan | 3 | 11 | 12,000 | 11,000
Commercial and industrial loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Pre- Modification Recorded Balance |  | $ 654 | $ 348 | $ 654
Post - Modification Recorded Balance |  | $ 654 | $ 348 | $ 654
Number of Loans | loan |  | 3 | 2,000 | 3,000
Agricultural land, production and other loans to farmers |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Pre- Modification Recorded Balance |  | $ 458 |  | $ 458
Post - Modification Recorded Balance |  | $ 458 |  | $ 458
Number of Loans | loan |  | 1 |  | 1,000
Commercial real estate, owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Pre- Modification Recorded Balance | $ 21 | $ 107 | $ 21 | $ 107
Post - Modification Recorded Balance | $ 21 | $ 107 | $ 21 | $ 107
Number of Loans | loan | 1 | 1 | 1,000 | 1,000
Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Pre- Modification Recorded Balance | $ 66 | $ 300 | $ 691 | $ 300
Post - Modification Recorded Balance | $ 66 | $ 337 | $ 693 | $ 337
Number of Loans | loan | 2 | 6 | 9,000 | 6,000
Term Modification |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance | $ 66 | $ 1,219 | $ 797 | $ 1,219
Term Modification | Commercial and industrial loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 654 | 348 | 654
Term Modification | Agricultural land, production and other loans to farmers |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 458 |  | 458
Term Modification | Commercial real estate, owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance | 0 | 107 | 0 | 107
Term Modification | Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance | 66 | 0 | 449 | 0
Rate Modification |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 112 | 126 | 112
Rate Modification | Commercial and industrial loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 0 | 0 | 0
Rate Modification | Agricultural land, production and other loans to farmers |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 0 |  | 0
Rate Modification | Commercial real estate, owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 0 | 0 | 0
Rate Modification | Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 112 | 126 | 112
Combination |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance | 21 | 225 | 139 | 225
Combination | Commercial and industrial loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 0 | 0 | 0
Combination | Agricultural land, production and other loans to farmers |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance |  | 0 |  | 0
Combination | Commercial real estate, owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance | 21 | 0 | 21 | 0
Combination | Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Post - Modification Recorded Balance | $ 0 | $ 225 | $ 118 | $ 225

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