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Loans and ALLL (Summary of information pertaining to TDRs) (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 USD ($) loan | Mar. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | $ 6,280 | $ 8,894
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method | $ 68 | $ 82
Number of Loans | loan | 1 | 9
Pre-Modification Recorded Investment | $ 98 | $ 8,364
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 98 | $ 8,364
Interest Rate Below Market Reduction [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 0 | 7
Pre-Modification Recorded Investment | $ 0 | $ 6,901
Below Market Interest Rate and Extension of Amortization Period [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 1 | 2
Pre-Modification Recorded Investment | $ 98 | $ 1,463
Commercial other [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 2,737 | 54
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method | $ 30 | $ 0
Number of Loans | loan | 0 | 3
Pre-Modification Recorded Investment | $ 0 | $ 4,652
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0 | $ 4,652
Commercial other [Member] | Interest Rate Below Market Reduction [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 0 | 1
Pre-Modification Recorded Investment | $ 0 | $ 3,189
Commercial other [Member] | Below Market Interest Rate and Extension of Amortization Period [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 0 | 2
Pre-Modification Recorded Investment | $ 0 | $ 1,463
Agricultural other [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 0 | 678
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method | $ 0 | $ 0
Number of Loans | loan | 0 | 6
Pre-Modification Recorded Investment | $ 0 | $ 3,712
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0 | $ 3,712
Agricultural other [Member] | Interest Rate Below Market Reduction [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 0 | 6
Pre-Modification Recorded Investment | $ 0 | $ 3,712
Agricultural other [Member] | Below Market Interest Rate and Extension of Amortization Period [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 0 | 0
Pre-Modification Recorded Investment | $ 0 | $ 0
Residential real estate senior liens [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 3,354 | 4,228
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method | $ 35 | $ 43
Number of Loans | loan | 1 | 0
Pre-Modification Recorded Investment | $ 98 | $ 0
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 98 | $ 0
Residential real estate senior liens [Member] | Interest Rate Below Market Reduction [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 0 | 0
Pre-Modification Recorded Investment | $ 0 | $ 0
Residential real estate senior liens [Member] | Below Market Interest Rate and Extension of Amortization Period [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Loans | loan | 1 | 0
Pre-Modification Recorded Investment | $ 98 | $ 0

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