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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, Nonrecurring - Significant Unobservable Inputs (Level 3) $ in Thousands | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Farmland |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 591 | $ 659
Farmland | Minimum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 0.45
Farmland | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.60 | 0.54
Farmland | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.60 | 0.47
Owner-occupied, nonfarm nonresidential properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 224 | $ 329
Owner-occupied, nonfarm nonresidential properties | Minimum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0 | 0.60
Owner-occupied, nonfarm nonresidential properties | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.60 | 0.90
Owner-occupied, nonfarm nonresidential properties | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.56 | 0.80
Commercial and Industrial |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 1,547 | $ 3,680
Commercial and Industrial | Minimum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0 | 0
Commercial and Industrial | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.50 | 1
Commercial and Industrial | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.35 | 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 | $ 225 | $ 1,790
Other construction loans and all land development and other land loans | Minimum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.25 | 0.25
Other construction loans and all land development and other land loans | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.25 | 0.41
Other construction loans and all land development and other land loans | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.25 | 0.28
Multifamily (5 or more) residential properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 646 |
Multifamily (5 or more) residential properties | Minimum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0 |
Multifamily (5 or more) residential properties | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.58 |
Multifamily (5 or more) residential properties | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.22 |
Non-owner occupied, nonfarm nonresidential properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 2,971 | $ 9,622
Non-owner occupied, nonfarm nonresidential properties | Minimum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.25 | 0.25
Non-owner occupied, nonfarm nonresidential properties | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.60 | 1
Non-owner occupied, nonfarm nonresidential properties | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0.34 | 0.29
Obligations (other than securities and leases) of states and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value | $ 269 |
Obligations (other than securities and leases) of states and political subdivisions | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0 |
Obligations (other than securities and leases) of states and political subdivisions | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique | 0 |
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 | Maximum | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 0.31
Residential Mortgages secured by first liens | Weighted Average | Measurement Input, Loss Severity |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation technique |  | 0.31

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