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Loans and ALLL (Past due and current loans) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | $ 0 | $ 0
Nonaccrual | 3,077 | 5,313
Total Past Due and Nonaccrual | 3,498 | 9,610
Total | 1,248,558 | 1,238,311
Loans and Leases Receivable, Gross | 1,248,558 | 1,238,311
Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 161 | 1,329
Total Past Due and Nonaccrual | 345 | 2,148
Total | 757,993 | 756,686
Loans and Leases Receivable, Gross | 757,993 | 756,686
Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 37 | 26
Total Past Due and Nonaccrual | 80 | 359
Total | 537,016 | 506,297
Loans and Leases Receivable, Gross | 537,016 | 506,297
Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 124 | 1,303
Total Past Due and Nonaccrual | 265 | 1,789
Total | 174,000 | 200,131
Loans and Leases Receivable, Gross | 174,000 | 200,131
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 | 46,977 | 50,258
Loans and Leases Receivable, Gross | 46,977 | 50,258
Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 2,811 | 3,785
Total Past Due and Nonaccrual | 2,860 | 3,786
Total | 93,782 | 100,461
Loans and Leases Receivable, Gross | 93,782 | 100,461
Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 2,536 | 3,398
Total Past Due and Nonaccrual | 2,585 | 3,398
Total | 66,109 | 71,218
Loans and Leases Receivable, Gross | 66,109 | 71,218
Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 275 | 387
Total Past Due and Nonaccrual | 275 | 388
Total | 27,673 | 29,243
Loans and Leases Receivable, Gross | 27,673 | 29,243
Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 105 | 199
Total Past Due and Nonaccrual | 268 | 3,580
Total | 321,620 | 307,543
Loans and Leases Receivable, Gross | 321,620 | 307,543
Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Nonaccrual | 105 | 199
Total Past Due and Nonaccrual | 261 | 3,547
Loans and Leases Receivable, Gross | 287,213 | 272,972
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 | 25
Loans and Leases Receivable, Gross | 2,837 | 3,816
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 | 0
Total Past Due and Nonaccrual | 7 | 8
Loans and Leases Receivable, Gross | 31,570 | 30,755
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 | 25 | 96
Total | 75,163 | 73,621
Loans and Leases Receivable, Gross | 75,163 | 73,621
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 | 17 | 93
Loans and Leases Receivable, Gross | 72,285 | 70,442
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 | 8 | 3
Loans and Leases Receivable, Gross | 2,878 | 3,179
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 372 | 4,152
Financial Asset, 30 to 59 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 184 | 819
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 43 | 333
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 141 | 486
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 | 1
Financial Asset, 30 to 59 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 1
Financial Asset, 30 to 59 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 163 | 3,236
Financial Asset, 30 to 59 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 156 | 3,203
Financial Asset, 30 to 59 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 25
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 | 7 | 8
Financial Asset, 30 to 59 Days Past Due [Member] | Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 25 | 96
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17 | 93
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 8 | 3
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 49 | 145
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 | 49 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 49 | 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 | 145
Financial Asset, 60 to 89 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 145
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 | 0 | 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 | 0 | 0
Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,245,060 | 1,228,701
Financial Asset, Not Past Due | Total commercial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 757,648 | 754,538
Financial Asset, Not Past Due | Commercial real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 536,936 | 505,938
Financial Asset, Not Past Due | Commercial other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 173,735 | 198,342
Financial Asset, Not Past Due | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 46,977 | 50,258
Financial Asset, Not Past Due | Total agricultural [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 90,922 | 96,675
Financial Asset, Not Past Due | Agricultural real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 63,524 | 67,820
Financial Asset, Not Past Due | Agricultural other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 27,398 | 28,855
Financial Asset, Not Past Due | Total residential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 321,352 | 303,963
Financial Asset, Not Past Due | Residential real estate senior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 286,952 | 269,425
Financial Asset, Not Past Due | Residential real estate junior liens [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,837 | 3,791
Financial Asset, Not Past Due | Residential real estate home equity lines of credit [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 31,563 | 30,747
Financial Asset, Not Past Due | Total Consumer [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 75,138 | 73,525
Financial Asset, Not Past Due | Consumer secured [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 72,268 | 70,349
Financial Asset, Not Past Due | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 2,870 | $ 3,176

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- Definition Amount of financing receivable 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922355-210448 + Details
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