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Loans and ALLL (Past due and current loans) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | $ 21 | $ 97
Nonaccrual | 580 | 1,245
Total Past Due and Nonaccrual | 4,008 | 4,031
Total | 1,236,151 | 1,301,037
Loans and Leases Receivable, Gross | 1,236,151 | 1,301,037
Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 178 | 341
Total Past Due and Nonaccrual | 2,747 | 561
Total | 730,504 | 807,439
Loans and Leases Receivable, Gross | 730,504 | 807,439
Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 78 | 222
Total Past Due and Nonaccrual | 2,399 | 357
Total | 561,959 | 570,587
Loans and Leases Receivable, Gross | 561,959 | 570,587
Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 100 | 119
Total Past Due and Nonaccrual | 348 | 204
Total | 167,061 | 164,851
Loans and Leases Receivable, Gross | 167,061 | 164,851
Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Total | 1,484 | 72,001
Loans and Leases Receivable, Gross | 1,484 | 72,001
Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 266 | 774
Total Past Due and Nonaccrual | 574 | 987
Total | 96,850 | 93,955
Loans and Leases Receivable, Gross | 96,850 | 93,955
Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 98 | 499
Total Past Due and Nonaccrual | 356 | 712
Total | 66,162 | 66,144
Loans and Leases Receivable, Gross | 66,162 | 66,144
Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 168 | 275
Total Past Due and Nonaccrual | 218 | 275
Total | 30,688 | 27,811
Loans and Leases Receivable, Gross | 30,688 | 27,811
Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 21 | 97
Nonaccrual | 136 | 130
Total Past Due and Nonaccrual | 507 | 2,287
Total | 334,412 | 326,361
Loans and Leases Receivable, Gross | 334,412 | 326,361
Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 21 | 97
Nonaccrual | 136 | 93
Total Past Due and Nonaccrual | 507 | 2,243
Loans and Leases Receivable, Gross | 299,604 | 293,143
Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 0 | 0
Loans and Leases Receivable, Gross | 2,807 | 2,439
Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 0 | 37
Total Past Due and Nonaccrual | 0 | 44
Loans and Leases Receivable, Gross | 32,001 | 30,779
Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 180 | 196
Total | 74,385 | 73,282
Loans and Leases Receivable, Gross | 74,385 | 73,282
Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 176 | 186
Loans and Leases Receivable, Gross | 71,434 | 70,445
Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 4 | 10
Loans and Leases Receivable, Gross | 2,951 | 2,837
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,960 | 2,652
Financial Asset, 30 to 59 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,569 | 220
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,321 | 135
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 248 | 85
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 213
Financial Asset, 30 to 59 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 213
Financial Asset, 30 to 59 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 213 | 2,023
Financial Asset, 30 to 59 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 213 | 2,016
Financial Asset, 30 to 59 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 7
Financial Asset, 30 to 59 Days Past Due [Member] | Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 178 | 196
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 176 | 186
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2 | 10
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 447 | 37
Financial Asset, 60 to 89 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 308 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 258 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 50 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 137 | 37
Financial Asset, 60 to 89 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 137 | 37
Financial Asset, 60 to 89 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2 | 0
Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,232,143 | 1,297,006
Financial Asset, Not Past Due | Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 727,757 | 806,878
Financial Asset, Not Past Due | Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 559,560 | 570,230
Financial Asset, Not Past Due | Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 166,713 | 164,647
Financial Asset, Not Past Due | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,484 | 72,001
Financial Asset, Not Past Due | Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 96,276 | 92,968
Financial Asset, Not Past Due | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 65,806 | 65,432
Financial Asset, Not Past Due | Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 30,470 | 27,536
Financial Asset, Not Past Due | Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 333,905 | 324,074
Financial Asset, Not Past Due | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 299,097 | 290,900
Financial Asset, Not Past Due | Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,807 | 2,439
Financial Asset, Not Past Due | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 32,001 | 30,735
Financial Asset, Not Past Due | Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 74,205 | 73,086
Financial Asset, Not Past Due | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 71,258 | 70,259
Financial Asset, Not Past Due | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 2,947 | $ 2,827

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