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Loans, Past Due And Accruing Restructured (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
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Financing receivables, non accruals, past due, and accruing restructured loans [Line Items] |  |
Total non-accrual loans | $ 3,869 | $ 5,725
Past-due 90 days or more and still accruing | 12 | 23
Total non-accrual and past-due 90 days or more and still accruing | 3,881 | 5,748
Accruing restructured loans | 11,606 | 11,731
Total | 15,487 | 17,479
Commercial and industrial [Member] |  |
Financing receivables, non accruals, past due, and accruing restructured loans [Line Items] |  |
Total non-accrual loans | 0 | 0
Commercial Secured By Real Estate [Member] |  |
Financing receivables, non accruals, past due, and accruing restructured loans [Line Items] |  |
Total non-accrual loans | 2,609 | 4,312
Agricultural [Member] |  |
Financing receivables, non accruals, past due, and accruing restructured loans [Line Items] |  |
Total non-accrual loans | 334 | 334
Residential Real Estate [Member] |  |
Financing receivables, non accruals, past due, and accruing restructured loans [Line Items] |  |
Total non-accrual loans | 926 | 1,079
Consumer [Member] |  |
Financing receivables, non accruals, past due, and accruing restructured loans [Line Items] |  |
Total non-accrual loans | $ 0 | $ 0

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