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Fair Value - Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Non Recurring Basis (Details) - Fair Value, Measurements, Non Recurring - Significant Unobservable Inputs (Level 3) $ in Thousands | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
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Farmland |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 659 |
Farmland | Measurement Input, Loss Severity | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.45 |
Farmland | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.54 |
Farmland | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.47 |
Owner-occupied, nonfarm nonresidential properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 329 |
Owner-occupied, nonfarm nonresidential properties | Measurement Input, Loss Severity | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.60 |
Owner-occupied, nonfarm nonresidential properties | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.90 |
Owner-occupied, nonfarm nonresidential properties | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.80 |
Commercial and Industrial |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 3,680 |
Commercial and Industrial | Measurement Input, Loss Severity | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0 |
Commercial and Industrial | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 1 |
Commercial and Industrial | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.39 |
Other construction loans and all land development and other land loans |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 1,790 |
Other construction loans and all land development and other land loans | Measurement Input, Loss Severity | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.25 |
Other construction loans and all land development and other land loans | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.41 |
Other construction loans and all land development and other land loans | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.28 |
Multifamily (5 or more) residential properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 0 |
Multifamily (5 or more) residential properties | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.58 |
Multifamily (5 or more) residential properties | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.58 |
Non-owner occupied, nonfarm nonresidential properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 9,622 |
Non-owner occupied, nonfarm nonresidential properties | Measurement Input, Loss Severity | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.25 |
Non-owner occupied, nonfarm nonresidential properties | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 1 |
Non-owner occupied, nonfarm nonresidential properties | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.29 |
Residential Mortgages secured by first liens |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 659 |
Residential Mortgages secured by first liens | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.31 |
Residential Mortgages secured by first liens | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.31 |
Commercial, industrial, and agricultural |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value |  | $ 2,910
Commercial, industrial, and agricultural | Measurement Input, Loss Severity | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 0
Commercial, industrial, and agricultural | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 1
Commercial, industrial, and agricultural | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 0.54
Commercial mortgages |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value |  | $ 1,147
Commercial mortgages | Measurement Input, Loss Severity | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 0.25
Commercial mortgages | Measurement Input, Loss Severity | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 1
Commercial mortgages | Measurement Input, Loss Severity | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 0.52

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