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Loans and ALLL (Past due and current loans) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | $ 0 | $ 97
Nonaccrual | 457 | 1,245
Total Past Due and Nonaccrual | 11,130 | 4,031
Total | 1,264,173 | 1,301,037
Total commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 96 | 341
Total Past Due and Nonaccrual | 7,504 | 561
Total | 740,920 | 807,439
Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 74 | 222
Total Past Due and Nonaccrual | 7,197 | 357
Total | 574,660 | 570,587
Commercial other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 22 | 119
Total Past Due and Nonaccrual | 307 | 204
Total | 166,260 | 164,851
Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Total | 0 | 72,001
Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 234 | 774
Total Past Due and Nonaccrual | 234 | 987
Total | 104,314 | 93,955
Agricultural real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 67 | 499
Total Past Due and Nonaccrual | 67 | 712
Total | 72,331 | 66,144
Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 167 | 275
Total Past Due and Nonaccrual | 167 | 275
Total | 31,983 | 27,811
Total residential real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 97
Nonaccrual | 127 | 130
Total Past Due and Nonaccrual | 3,333 | 2,287
Total | 340,885 | 326,361
Residential real estate senior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 97
Nonaccrual | 127 | 93
Total Past Due and Nonaccrual | 3,295 | 2,243
Total | 304,901 | 293,143
Residential real estate junior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Total | 3,282 | 2,439
Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 0 | 37
Total Past Due and Nonaccrual | 38 | 44
Total | 32,702 | 30,779
Total consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 59 | 196
Total | 78,054 | 73,282
Consumer secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 55 | 186
Total | 74,941 | 70,445
Consumer unsecured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 4 | 10
Total | 3,113 | 2,837
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 7,870 | 2,652
Financing Receivables, 30 to 59 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 4,838 | 220
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 4,553 | 135
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 285 | 85
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 213
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 213
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 2,981 | 2,023
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 2,943 | 2,016
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 38 | 7
Financing Receivables, 30 to 59 Days Past Due [Member] | Total consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 51 | 196
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 47 | 186
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer unsecured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 4 | 10
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 2,803 | 37
Financing Receivables, 60 to 89 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 2,570 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 2,570 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 225 | 37
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 225 | 37
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Total consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 8 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 8 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer unsecured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, Not Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 1,253,043 | 1,297,006
Financial Asset, Not Past Due | Total commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 733,416 | 806,878
Financial Asset, Not Past Due | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 567,463 | 570,230
Financial Asset, Not Past Due | Commercial other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 165,953 | 164,647
Financial Asset, Not Past Due | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 0 | 72,001
Financial Asset, Not Past Due | Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 104,080 | 92,968
Financial Asset, Not Past Due | Agricultural real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 72,264 | 65,432
Financial Asset, Not Past Due | Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 31,816 | 27,536
Financial Asset, Not Past Due | Total residential real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 337,552 | 324,074
Financial Asset, Not Past Due | Residential real estate senior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 301,606 | 290,900
Financial Asset, Not Past Due | Residential real estate junior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 3,282 | 2,439
Financial Asset, Not Past Due | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 32,664 | 30,735
Financial Asset, Not Past Due | Total consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 77,995 | 73,086
Financial Asset, Not Past Due | Consumer secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | 74,886 | 70,259
Financial Asset, Not Past Due | Consumer unsecured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total | $ 3,109 | $ 2,827

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