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Loans and ALLL (Summary of information pertaining to TDRs) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) loan | Dec. 31, 2021 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 4 | 11
Pre-Modification Recorded Investment | $ 2,969 | $ 8,473
Post-Modification Recorded Investment | $ 2,969 | $ 8,473
Commercial other [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 3 | 5
Pre-Modification Recorded Investment | $ 2,871 | $ 4,761
Post-Modification Recorded Investment | $ 2,871 | $ 4,761
Agricultural other [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 0 | 6
Pre-Modification Recorded Investment | $ 0 | $ 3,712
Post-Modification Recorded Investment | $ 0 | $ 3,712
Residential real estate senior liens [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 0
Pre-Modification Recorded Investment | $ 98 | $ 0
Post-Modification Recorded Investment | $ 98 | $ 0
Below Market Interest Rate and Extension of Amortization Period [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 4
Pre-Modification Recorded Investment | $ 98 | $ 1,572
Below Market Interest Rate and Extension of Amortization Period [Member] | Commercial other [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 0 | 4
Pre-Modification Recorded Investment | $ 0 | $ 1,572
Below Market Interest Rate and Extension of Amortization Period [Member] | Agricultural other [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 0 | 0
Pre-Modification Recorded Investment | $ 0 | $ 0
Below Market Interest Rate and Extension of Amortization Period [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 0
Pre-Modification Recorded Investment | $ 98 | $ 0
Interest Rate Below Market Reduction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 3 | 7
Pre-Modification Recorded Investment | $ 2,871 | $ 6,901
Interest Rate Below Market Reduction [Member] | Commercial other [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 3 | 1
Pre-Modification Recorded Investment | $ 2,871 | $ 3,189
Interest Rate Below Market Reduction [Member] | Agricultural other [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 0 | 6
Pre-Modification Recorded Investment | $ 0 | $ 3,712
Interest Rate Below Market Reduction [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 0 | 0
Pre-Modification Recorded Investment | $ 0 | $ 0
Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 0 | 0

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