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Loans, Credit Quality Indicator (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018
Financing Receivable by credit exposure [Abstract] |  |
Total | $ 225,426 | $ 225,163
Minimum [Member] |  |
Financing Receivable [Abstract] |  |
Percentage of dollar volume of commercial loan portfolio to be reviewed | 50.00% |
Amount over which all relationships to be reviewed, minimum | $ 500 |
Amount over which all new loans to be reviewed | 1,000 |
Amount over which all relationships to be reviewed | 1,000 |
Amount which is 30 days past due to be reviewed for all aggregate loan relationships | 750 |
Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 349,269 | 319,265
Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 305,948 | 284,520
Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 11,448 | 33,913
Real Estate Loans [Member] | Mortgages [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 155,883 | 156,487
Real Estate Loans [Member] | Home Equity [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 59,834 | 58,818
Consumer [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 9,709 | 9,858
Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 76,785 | 74,118
Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 50,334 | 42,186
State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 95,824 | 102,718
Pass [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 841,474 | 798,054
Pass [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 331,075 | 297,690
Pass [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 283,074 | 264,732
Pass [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 11,448 | 33,913
Pass [Member] | Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 73,502 | 70,425
Pass [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 47,026 | 38,628
Pass [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 95,349 | 92,666
Special Mention [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 27,606 | 32,791
Special Mention [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 9,945 | 10,792
Special Mention [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 14,987 | 10,017
Special Mention [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Special Mention [Member] | Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 964 | 777
Special Mention [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 1,710 | 1,724
Special Mention [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 9,481
Substandard [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 20,423 | 25,719
Substandard [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 8,210 | 10,743
Substandard [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 7,887 | 9,771
Substandard [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Substandard [Member] | Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 2,253 | 2,800
Substandard [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 1,598 | 1,834
Substandard [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 475 | 571
Doubtful [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 105 | 156
Doubtful [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 39 | 40
Doubtful [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Doubtful [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Doubtful [Member] | Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 66 | 116
Doubtful [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Doubtful [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Loss [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Loss [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Loss [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Loss [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Loss [Member] | Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Loss [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Loss [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Internally Assigned Grade [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 889,608 | 856,720
Performing [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 224,353 | 223,928
Performing [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 154,924 | 155,360
Performing [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 59,742 | 58,736
Performing [Member] | Consumer [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 9,687 | 9,832
Nonperforming [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 1,049 | 1,207
Nonperforming [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 935 | 1,099
Nonperforming [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 92 | 82
Nonperforming [Member] | Consumer [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 22 | 26
PCI [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 24 | 28
PCI [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 24 | 28
PCI [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
PCI [Member] | Consumer [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | $ 0 | $ 0

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