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Loans and ALLL (Past due and current loans) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | $ 274 | $ 395
Nonaccrual | 7,136 | 3,027
Total Past Due and Nonaccrual | 11,952 | 9,836
Current | 1,127,978 | 1,081,683
Total | 1,139,930 | 1,091,519
Total commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 72
Nonaccrual | 1,140 | 729
Total Past Due and Nonaccrual | 3,084 | 2,518
Current | 665,831 | 632,241
Total | 668,915 | 634,759
Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 54
Nonaccrual | 897 | 729
Total Past Due and Nonaccrual | 1,323 | 1,403
Current | 503,563 | 480,251
Total | 504,886 | 481,654
Commercial other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 18
Nonaccrual | 243 | 0
Total Past Due and Nonaccrual | 1,761 | 1,115
Current | 146,637 | 139,909
Total | 148,398 | 141,024
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
Current | 15,631 | 12,081
Total | 15,631 | 12,081
Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 62 | 104
Nonaccrual | 5,298 | 1,950
Total Past Due and Nonaccrual | 5,663 | 2,367
Current | 123,569 | 125,902
Total | 129,232 | 128,269
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 | 2,881 | 1,531
Total Past Due and Nonaccrual | 2,974 | 1,805
Current | 84,760 | 86,360
Total | 87,734 | 88,165
Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 62 | 104
Nonaccrual | 2,417 | 419
Total Past Due and Nonaccrual | 2,689 | 562
Current | 38,809 | 39,542
Total | 41,498 | 40,104
Total residential real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 212 | 209
Nonaccrual | 698 | 348
Total Past Due and Nonaccrual | 3,137 | 4,881
Current | 273,767 | 267,487
Total | 276,904 | 272,368
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 | 212 | 132
Nonaccrual | 698 | 325
Total Past Due and Nonaccrual | 2,629 | 4,409
Current | 233,325 | 225,007
Total | 235,954 | 229,416
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 | 23
Total Past Due and Nonaccrual | 9 | 102
Current | 6,157 | 6,812
Total | 6,166 | 6,914
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 | 77
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 499 | 370
Current | 34,285 | 35,668
Total | 34,784 | 36,038
Total Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 10
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 68 | 70
Current | 64,811 | 56,053
Total | 64,879 | 56,123
Consumer secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 10
Nonaccrual | 0 | 0
Total Past Due and Nonaccrual | 66 | 57
Current | 60,956 | 52,005
Total | 61,022 | 52,062
Consumer Unsecured Financing Receivable [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 | 2 | 13
Current | 3,855 | 4,048
Total | 3,857 | 4,061
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 3,052 | 5,617
Financing Receivables, 30 to 59 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,129 | 1,364
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 426 | 295
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 703 | 1,069
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 120 | 123
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 70 | 84
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 50 | 39
Financing Receivables, 30 to 59 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,735 | 4,080
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,261 | 3,718
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 9 | 69
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] |  |
Financing Receivable, Recorded Investment, Past Due | 465 | 293
Financing Receivables, 30 to 59 Days Past Due [Member] | Total Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 68 | 50
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 66 | 37
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 2 | 13
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,490 | 797
Financing Receivables, 60 to 89 Days Past Due [Member] | Total commercial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 815 | 353
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 325
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 815 | 28
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Advances to Mortgage Brokers Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 183 | 190
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 23 | 190
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 160 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Total residential real estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 492 | 244
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential real estate senior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 458 | 234
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential real estate junior liens [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 10
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] |  |
Financing Receivable, Recorded Investment, Past Due | 34 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Total Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 10
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 10
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Unsecured Financing Receivable [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | $ 0 | $ 0

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: 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=84173941&loc=d3e5111-111524 + Details
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