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Loans and Allowance for Loan Losses (Details 6) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans $ 1,532 $ 1,096
Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans 393 423
Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans 62 15
Commercial Real Estate [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans 123 222
Residential Real Estate [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual loans $ 955 $ 436