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Loans - Amortized Cost Basis of Collateral-Dependent Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Real Estate Collateral |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | $ 18,171 | $ 15,439
Real Estate Collateral | Farmland |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 1,793 | 1,793
Real Estate Collateral | Owner-occupied, nonfarm nonresidential properties |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 267 | 285
Real Estate Collateral | Commercial and Industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 398 | 594
Real Estate Collateral | Obligations (other than securities and leases) of states and political subdivisions |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 706 |
Real Estate Collateral | Other construction loans and all land development and other land loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 1,815 | 2,272
Real Estate Collateral | Multifamily (5 or more) residential properties |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 994 | 288
Real Estate Collateral | Non-owner occupied, nonfarm nonresidential properties |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 11,747 | 9,072
Real Estate Collateral | Residential Mortgages secured by first liens |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 451 | 1,135
Non-Real Estate Collateral |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 5,686 | 7,067
Non-Real Estate Collateral | Farmland |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 0 | 0
Non-Real Estate Collateral | Owner-occupied, nonfarm nonresidential properties |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 36 | 587
Non-Real Estate Collateral | Commercial and Industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 5,492 | 5,600
Non-Real Estate Collateral | Obligations (other than securities and leases) of states and political subdivisions |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 0 |
Non-Real Estate Collateral | Other construction loans and all land development and other land loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 0 | 0
Non-Real Estate Collateral | Multifamily (5 or more) residential properties |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 0 | 0
Non-Real Estate Collateral | Non-owner occupied, nonfarm nonresidential properties |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | 158 | 880
Non-Real Estate Collateral | Residential Mortgages secured by first liens |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Amortized cost basis of collateral-dependent loans | $ 0 | $ 0

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