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Loans and Allowance for Loan Losses (Details 1) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans $ 335,939 $ 346,113 $ 335,939
Agricultural [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 36,518 41,098 36,518
Agricultural [Member] | Risk ratings 1 and 2 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 7,402 9,596  
Agricultural [Member] | Risk ratings 3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 22,512 24,294  
Agricultural [Member] | Risk ratings 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 4,669 6,462  
Agricultural [Member] | Risk ratings 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 1,883 683  
Agricultural [Member] | Risk ratings 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans $ 52 $ 63  
Agricultural [Member] | Risk ratings 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans      
Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans $ 84,853 $ 88,062 84,853
Commercial and Industrial [Member] | Risk ratings 1 and 2 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 10,339 11,590  
Commercial and Industrial [Member] | Risk ratings 3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 58,206 59,470  
Commercial and Industrial [Member] | Risk ratings 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 15,321 15,764  
Commercial and Industrial [Member] | Risk ratings 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 969 976  
Commercial and Industrial [Member] | Risk ratings 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans $ 18 $ 262  
Commercial and Industrial [Member] | Risk ratings 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans      
Commercial Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans $ 99,396 $ 99,807 $ 99,396
Commercial Real Estate [Member] | Risk ratings 1 and 2 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 3,332 3,576  
Commercial Real Estate [Member] | Risk ratings 3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 58,745 58,600  
Commercial Real Estate [Member] | Risk ratings 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 29,445 28,557  
Commercial Real Estate [Member] | Risk ratings 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans 5,427 4,490  
Commercial Real Estate [Member] | Risk ratings 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans $ 2,447 $ 4,584  
Commercial Real Estate [Member] | Risk ratings 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Risk rated loans