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Loans and ALLL (Past due and current loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | $ 154 | $ 395
Nonaccrual | 6,492 | 3,027
Total Past Due and Nonaccrual | 12,475 | 9,836
Current | 1,139,281 | 1,081,683
Total | 1,151,756 | 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 | 1,946 | 729
Total Past Due and Nonaccrual | 4,929 | 2,518
Current | 686,694 | 632,241
Total | 691,623 | 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 | 1,646 | 729
Total Past Due and Nonaccrual | 3,237 | 1,403
Current | 492,812 | 480,251
Total | 496,049 | 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 | 300 | 0
Total Past Due and Nonaccrual | 1,692 | 1,115
Current | 170,018 | 139,909
Total | 171,710 | 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 | 23,864 | 12,081
Total | 23,864 | 12,081
Total agricultural [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 125 | 104
Nonaccrual | 3,757 | 1,950
Total Past Due and Nonaccrual | 5,051 | 2,367
Current | 120,198 | 125,902
Total | 125,249 | 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 | 125 | 0
Nonaccrual | 2,152 | 1,531
Total Past Due and Nonaccrual | 3,002 | 1,805
Current | 83,807 | 86,360
Total | 86,809 | 88,165
Agricultural other [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | 0 | 104
Nonaccrual | 1,605 | 419
Total Past Due and Nonaccrual | 2,049 | 562
Current | 36,391 | 39,542
Total | 38,440 | 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 | 29 | 209
Nonaccrual | 789 | 348
Total Past Due and Nonaccrual | 2,452 | 4,881
Current | 271,155 | 267,487
Total | 273,607 | 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 | 29 | 132
Nonaccrual | 779 | 325
Total Past Due and Nonaccrual | 2,186 | 4,409
Current | 230,258 | 225,007
Total | 232,444 | 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
Nonaccrual | 10 | 23
Total Past Due and Nonaccrual | 43 | 102
Current | 6,261 | 6,812
Total | 6,304 | 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 | 223 | 370
Current | 34,636 | 35,668
Total | 34,859 | 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 | 43 | 70
Current | 61,234 | 56,053
Total | 61,277 | 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 | 26 | 57
Current | 57,393 | 52,005
Total | 57,419 | 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 | 17 | 13
Current | 3,841 | 4,048
Total | 3,858 | 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 | 3,840 | 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 | 2,096 | 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 | 1,531 | 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 | 565 | 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 | 610 | 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 | 576 | 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 | 34 | 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 | 1,099 | 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 | 1,028 | 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 | 33 | 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 | 38 | 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 | 35 | 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 | 18 | 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 | 17 | 13
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,989 | 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 | 887 | 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 | 60 | 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 | 827 | 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 | 559 | 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 | 149 | 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 | 410 | 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 | 535 | 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 | 350 | 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 | 185 | 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 | 8 | 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 | 8 | 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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