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Loans, Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | $ 13,845 | $ 12,884
Charge-offs | (9) | (214)
Recoveries | 11 | 14
Provision (Credit) | 400 | 400
Balance at end of period | 14,247 | 13,084
Real Estate Loans [Member] | Residential [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 1,114 | 1,105
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision (Credit) | 40 | (16)
Balance at end of period | 1,154 | 1,089
Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 4,549 | 4,115
Charge-offs | (1) | (200)
Recoveries | 1 | 0
Provision (Credit) | 180 | 215
Balance at end of period | 4,729 | 4,130
Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 5,022 | 4,264
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision (Credit) | (144) | 128
Balance at end of period | 4,878 | 4,392
Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 43 | 58
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision (Credit) | 13 | (26)
Balance at end of period | 56 | 32
Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 112 | 120
Charge-offs | (8) | (14)
Recoveries | 8 | 11
Provision (Credit) | 5 | 7
Balance at end of period | 117 | 124
Other Commercial Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 1,255 | 1,354
Charge-offs | 0 | 0
Recoveries | 2 | 3
Provision (Credit) | 40 | (74)
Balance at end of period | 1,297 | 1,283
Other Agricultural Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 961 | 752
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision (Credit) | (126) | 4
Balance at end of period | 835 | 756
State and Political Subdivision Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 536 | 762
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision (Credit) | 22 | (197)
Balance at end of period | 558 | 565
Unallocated [Member] |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Balance at beginning of period | 253 | 354
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision (Credit) | 370 | 359
Balance at end of period | $ 623 | $ 713

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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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