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Long-Term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Federal Home Loan Bank, Advances, Fiscal Year Maturity, Amount [Abstract]    
Due in next 12 months $ 40,037 $ 40,150
Due in year two 20,000 40,000
Due in year three 25,000 20,000
Due in year four 56 0
Due in year five   72
Due in year fourteen 3,776  
Due in year fifteen   3,865
Total $ 88,869 $ 104,087
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]    
Due in next 12 months 2.57% 2.67%
Due in year two 1.96% 2.57%
Due in year three 2.34% 1.96%
Due in year four 4.00% 0.00%
Due in year five   4.00%
Due in year fourteen 2.45%  
Due in year fifteen   2.45%
Callable [Member]    
Federal Home Loan Bank, Advances, Fiscal Year Maturity, Amount [Abstract]    
Due in next 12 months $ 25,000 $ 25,000
Due in year two 0 25,000
Due in year three 0 0
Due in year four 0 0
Due in year five   0
Due in year fourteen 0  
Due in year fifteen   0
Total $ 25,000 $ 50,000
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]    
Due in next 12 months 3.15% 3.48%
Due in year two 0.00% 3.15%
Due in year three 0.00% 0.00%
Due in year four 0.00% 0.00%
Due in year five   0.00%
Due in year fourteen 0.00%  
Due in year fifteen   0.00%