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Loans and ALLL (Past due and current loans) (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | $ 0 | $ 97
Nonaccrual | 747 | 1,245
Total Past Due and Nonaccrual | 2,364 | 4,031
Total | 1,218,371 | 1,301,037
Loans and Leases Receivable, Gross | 1,218,371 | 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 | 319 | 341
Total Past Due and Nonaccrual | 412 | 561
Total | 727,614 | 807,439
Loans and Leases Receivable, Gross | 727,614 | 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 | 212 | 222
Total Past Due and Nonaccrual | 280 | 357
Total | 570,461 | 570,587
Loans and Leases Receivable, Gross | 570,461 | 570,587
Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 107 | 119
Total Past Due and Nonaccrual | 132 | 204
Total | 157,153 | 164,851
Loans and Leases Receivable, Gross | 157,153 | 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 | 0 | 72,001
Loans and Leases Receivable, Gross | 0 | 72,001
Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 283 | 774
Total Past Due and Nonaccrual | 283 | 987
Total | 88,169 | 93,955
Loans and Leases Receivable, Gross | 88,169 | 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 | 116 | 499
Total Past Due and Nonaccrual | 116 | 712
Total | 63,763 | 66,144
Loans and Leases Receivable, Gross | 63,763 | 66,144
Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 167 | 275
Total Past Due and Nonaccrual | 167 | 275
Total | 24,406 | 27,811
Loans and Leases Receivable, Gross | 24,406 | 27,811
Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 97
Nonaccrual | 145 | 130
Total Past Due and Nonaccrual | 1,560 | 2,287
Total | 328,559 | 326,361
Loans and Leases Receivable, Gross | 328,559 | 326,361
Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 97
Nonaccrual | 145 | 93
Total Past Due and Nonaccrual | 1,529 | 2,243
Loans and Leases Receivable, Gross | 294,261 | 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 | 14 | 0
Loans and Leases Receivable, Gross | 2,235 | 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 | 17 | 44
Loans and Leases Receivable, Gross | 32,063 | 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 | 109 | 196
Total | 74,029 | 73,282
Loans and Leases Receivable, Gross | 74,029 | 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 | 100 | 186
Loans and Leases Receivable, Gross | 70,914 | 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 | 9 | 10
Loans and Leases Receivable, Gross | 3,115 | 2,837
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,605 | 2,652
Financial Asset, 30 to 59 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 93 | 220
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 68 | 135
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 25 | 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 | 1,415 | 2,023
Financial Asset, 30 to 59 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,384 | 2,016
Financial Asset, 30 to 59 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 14 | 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 | 17 | 7
Financial Asset, 30 to 59 Days Past Due [Member] | Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 97 | 196
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 88 | 186
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 9 | 10
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 12 | 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 | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 37
Financial Asset, 60 to 89 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 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 | 12 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 12 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,216,007 | 1,297,006
Financial Asset, Not Past Due | Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 727,202 | 806,878
Financial Asset, Not Past Due | Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 570,181 | 570,230
Financial Asset, Not Past Due | Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 157,021 | 164,647
Financial Asset, Not Past Due | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 72,001
Financial Asset, Not Past Due | Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 87,886 | 92,968
Financial Asset, Not Past Due | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 63,647 | 65,432
Financial Asset, Not Past Due | Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 24,239 | 27,536
Financial Asset, Not Past Due | Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 326,999 | 324,074
Financial Asset, Not Past Due | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 292,732 | 290,900
Financial Asset, Not Past Due | Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,221 | 2,439
Financial Asset, Not Past Due | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 32,046 | 30,735
Financial Asset, Not Past Due | Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 73,920 | 73,086
Financial Asset, Not Past Due | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 70,814 | 70,259
Financial Asset, Not Past Due | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 3,106 | $ 2,827

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