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Loans and ALLL (Summary of recorded investment in loans by segments) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Individually evaluated for impairment, ALLL | $ 1,114 | $ 1,938 |
Collectively evaluated for impairment, ALLL | 6,825 | 6,437 |
Total, ALLL | 7,939 | 8,375 | $ 7,700
Individually evaluated for impairment, Loans | 28,191 | 31,099 |
Collectively evaluated for impairment, Loans | 1,158,379 | 1,097,608 |
Total | 1,186,570 | 1,128,707 |
Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Individually evaluated for impairment, ALLL | 15 | 443 |
Collectively evaluated for impairment, ALLL | 1,899 | 2,120 |
Total, ALLL | 1,914 | 2,563 | 1,706
Individually evaluated for impairment, Loans | 7,865 | 9,899 |
Collectively evaluated for impairment, Loans | 693,076 | 649,630 |
Total | 700,941 | 659,529 |
Agricultural [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Individually evaluated for impairment, ALLL | 26 | 132 |
Collectively evaluated for impairment, ALLL | 608 | 643 |
Total, ALLL | 634 | 775 | 611
Individually evaluated for impairment, Loans | 14,840 | 14,298 |
Collectively evaluated for impairment, Loans | 102,080 | 112,863 |
Total | 116,920 | 127,161 |
Residential Real Estate [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Individually evaluated for impairment, ALLL | 1,073 | 1,363 |
Collectively evaluated for impairment, ALLL | 974 | 629 |
Total, ALLL | 2,047 | 1,992 | 2,563
Individually evaluated for impairment, Loans | 5,486 | 6,893 |
Collectively evaluated for impairment, Loans | 293,083 | 268,450 |
Total | 298,569 | 275,343 |
Consumer [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Individually evaluated for impairment, ALLL | 0 | 0 |
Collectively evaluated for impairment, ALLL | 922 | 857 |
Total, ALLL | 922 | 857 | 900
Individually evaluated for impairment, Loans | 0 | 9 |
Collectively evaluated for impairment, Loans | 70,140 | 66,665 |
Total | 70,140 | 66,674 |
Unallocated [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Individually evaluated for impairment, ALLL | 0 | 0 |
Collectively evaluated for impairment, ALLL | 2,422 | 2,188 |
Total, ALLL | $ 2,422 | $ 2,188 | $ 1,920

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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