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Loans and Allowance - Amortized Cost Basis Of Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | $ 38,250 | $ 39,531 |  |
Allowance on Collateral Dependent Loans | 195,984 | 195,397 | $ 201,082 | $ 130,648
Commercial and industrial loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 8,111 | 8,075 |  |
Agricultural land, production and other loans to farmers |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment |  | 775 |  |
Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 645 | 685 |  |
Commercial real estate, non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 21,919 | 23,652 |  |
Commercial real estate, owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 2,351 | 1,044 |  |
Residential |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 4,836 | 4,906 |  |
Home equity |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 388 | 394 |  |
Commercial Real Estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 24,270 | 25,220 |  |
Commercial Real Estate | Commercial and industrial loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Commercial Real Estate | Agricultural land, production and other loans to farmers |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment |  | 524 |  |
Commercial Real Estate | Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Commercial Real Estate | Commercial real estate, non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 21,919 | 23,652 |  |
Commercial Real Estate | Commercial real estate, owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 2,351 | 1,044 |  |
Commercial Real Estate | Residential |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Commercial Real Estate | Home equity |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Residential |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 5,869 | 5,985 |  |
Residential | Commercial and industrial loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Residential | Agricultural land, production and other loans to farmers |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment |  | 0 |  |
Residential | Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 645 | 685 |  |
Residential | Commercial real estate, non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Residential | Commercial real estate, owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Residential | Residential |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 4,836 | 4,906 |  |
Residential | Home equity |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 388 | 394 |  |
Other |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 8,111 | 8,326 |  |
Other | Commercial and industrial loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 8,111 | 8,075 |  |
Other | Agricultural land, production and other loans to farmers |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment |  | 251 |  |
Other | Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Other | Commercial real estate, non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Other | Commercial real estate, owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Other | Residential |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Other | Home equity |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collateral Dependent |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans | 6,113 | 8,633 |  |
Collateral Dependent | Commercial and industrial loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans | 2,513 | 2,672 |  |
Collateral Dependent | Agricultural land, production and other loans to farmers |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans |  | 0 |  |
Collateral Dependent | Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans | 32 | 82 |  |
Collateral Dependent | Commercial real estate, non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans | 3,190 | 5,510 |  |
Collateral Dependent | Commercial real estate, owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans | 34 | 0 |  |
Collateral Dependent | Residential |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans | 281 | 305 |  |
Collateral Dependent | Home equity |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance on Collateral Dependent Loans | $ 63 | $ 64 |  |

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