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Loans, Credit Quality Indicator (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Financing Receivable by credit exposure [Abstract] |  |
Total | $ 189,940,000 | $ 193,935,000
Minimum [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage of dollar volume of commercial loan portfolio to be reviewed (in hundredths) | 55.00% |
Amount over which all new loans to be reviewed, minimum | $ 1,000,000 |
Amount over which all relationships to be reviewed, minimum | 1,000,000 |
Amount which is 30 days past due to be reviewed for all aggregate loan relationships | 750,000 |
Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 193,727,000 | 190,945,000
Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 30,723,000 | 24,639,000
Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 8,025,000 | 6,353,000
Real Estate Loans [Member] | Mortgages [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 120,809,000 | 122,858,000
Real Estate Loans [Member] | Home Equity [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 60,757,000 | 62,580,000
Consumer [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 8,374,000 | 8,497,000
Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 52,120,000 | 47,451,000
Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 12,386,000 | 11,065,000
State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 84,730,000 | 79,717,000
Pass [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 355,170,000 | 324,932,000
Pass [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 177,073,000 | 169,383,000
Pass [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 27,638,000 | 19,575,000
Pass [Member] | Real Estate Loans [Member] | Construction [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 8,025,000 | 6,353,000
Pass [Member] | Other Commercial Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 45,715,000 | 40,683,000
Pass [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 11,989,000 | 9,221,000
Pass [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 84,730,000 | 79,717,000
Special Mention [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 8,204,000 | 17,482,000
Special Mention [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 4,390,000 | 8,948,000
Special Mention [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 2,600,000 | 3,394,000
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 | 817,000 | 4,413,000
Special Mention [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 397,000 | 727,000
Special Mention [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Substandard [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 18,148,000 | 17,756,000
Substandard [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 12,220,000 | 12,614,000
Substandard [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 485,000 | 1,670,000
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 | 5,443,000 | 2,355,000
Substandard [Member] | Other Agricultural Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 1,117,000
Substandard [Member] | State and Political Subdivision Loans [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 0 | 0
Doubtful [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 189,000 | 0
Doubtful [Member] | Real Estate Loans [Member] | Commercial [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 44,000 | 0
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 | 145,000 | 0
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
Internally Assigned Grade [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 381,711,000 | 360,170,000
Performing [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 188,577,000 | 192,708,000
Performing [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 119,649,000 | 121,968,000
Performing [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 60,608,000 | 62,296,000
Performing [Member] | Consumer [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 8,320,000 | 8,444,000
Nonperforming [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 1,363,000 | 1,227,000
Nonperforming [Member] | Real Estate Loans [Member] | Mortgages [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 1,160,000 | 890,000
Nonperforming [Member] | Real Estate Loans [Member] | Home Equity [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | 149,000 | 284,000
Nonperforming [Member] | Consumer [Member] |  |
Financing Receivable by credit exposure [Abstract] |  |
Total | $ 54,000 | $ 53,000

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