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Loans, Allowance for Loan Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | $ 753 | $ 735 |  |
Collectively evaluated for impairment | 13,494 | 13,110 |  |
Total | 14,247 | 13,845 | $ 13,084 | $ 12,884
Real Estate Loans [Member] | Residential [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 31 | 32 |  |
Collectively evaluated for impairment | 1,123 | 1,082 |  |
Total | 1,154 | 1,114 | 1,089 | 1,105
Real Estate Loans [Member] | Commercial [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 335 | 251 |  |
Collectively evaluated for impairment | 4,394 | 4,298 |  |
Total | 4,729 | 4,549 | 4,130 | 4,115
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 86 | 151 |  |
Collectively evaluated for impairment | 4,792 | 4,871 |  |
Total | 4,878 | 5,022 | 4,392 | 4,264
Real Estate Loans [Member] | Construction [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 56 | 43 |  |
Total | 56 | 43 | 32 | 58
Consumer [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 117 | 112 |  |
Total | 117 | 112 | 124 | 120
Other Commercial Loans [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 148 | 147 |  |
Collectively evaluated for impairment | 1,149 | 1,108 |  |
Total | 1,297 | 1,255 | 1,283 | 1,354
Other Agricultural Loans [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 153 | 154 |  |
Collectively evaluated for impairment | 682 | 807 |  |
Total | 835 | 961 | 756 | 752
State and Political Subdivision Loans [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 558 | 536 |  |
Total | 558 | 536 | 565 | 762
Unallocated [Member] |  |  |  |
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 623 | 253 |  |
Total | $ 623 | $ 253 | $ 713 | $ 354

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