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Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) Loans contract | Jun. 30, 2020 contract | Jun. 30, 2021 USD ($) contract | Jun. 30, 2020 contract | Dec. 31, 2020 USD ($)
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Outstanding Recorded Investment | $ 6,504 |  | $ 6,504 |  | $ 7,908
Reserves specific to modified loans | $ 515 |  | $ 515 |  | $ 20
Number of loans | Loans | 1 |  |  |  |
Defaults on troubled debt restructurings | contract | 0 | 0 | 0 | 0 |
COVID-19 [Member] | Payment Deferral [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Outstanding Recorded Investment | $ 1,370 |  | $ 1,370 |  |
Commercial Real Estate | Commercial real estate |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Outstanding Recorded Investment | $ 317 |  | 317 |  |
Number of loans | Loans | 1 |  |  |  |
Pre-Modification Outstanding Recorded Investment | $ 333 |  |  |  |
Principal Modification | 0 |  |  |  |
Post Modification Outstanding Recorded Investment | 333 |  |  |  |
Commercial Real Estate | Commercial and industrial |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Outstanding Recorded Investment | $ 9,725 |  | 9,725 |  |
Number of loans | Loans | 1 |  |  |  |
Pre-Modification Outstanding Recorded Investment | $ 12,925 |  |  |  |
Principal Modification | 0 |  |  |  |
Post Modification Outstanding Recorded Investment | 12,925 |  |  |  |
Commercial Real Estate | Agricultural production |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Outstanding Recorded Investment | $ 775 |  | 775 |  |
Number of loans | Loans | 1 |  |  |  |
Pre-Modification Outstanding Recorded Investment | $ 850 |  |  |  |
Principal Modification | 0 |  |  |  |
Post Modification Outstanding Recorded Investment | 850 |  |  |  |
Commercial and Real Estate |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Outstanding Recorded Investment | $ 10,500 |  | $ 10,500 |  |
Number of loans | Loans | 2 |  |  |  |
Pre-Modification Outstanding Recorded Investment | $ 13,775 |  |  |  |
Principal Modification | 0 |  |  |  |
Post Modification Outstanding Recorded Investment | $ 13,775 |  |  |  |

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