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Loans and Allowance for Loan Losses (Details 7) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans $ 1,436 $ 1,983
Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans 482 482
Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans 374 245
Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans 5 6
Commercial Real Estate [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans 261 458
Residential Real Estate [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans $ 314 $ 792