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Short Term and Long Term Borrowings (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Customer
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]    
Federal funds purchased $ 0 $ 0
Available federal fund lines 55,000  
Overnight repurchase agreements $ 18,704 25,950
Number of customer relationships | Customer 4  
Major customer relationship repurchase agreements maximum percentage 5.00%  
Outstanding balance $ 15,679  
Percentage of repurchase agreements 83.83%  
1 - 4 family residential real estate pledged loans $ 90,317  
Available credit with FHLB 270,048  
Fixed Rate [Abstract]    
Due in one year or less 0 0
Due after one year through five years 0 25,000
Total long-term debt 0 25,000
Total [Abstract]    
Due in one year or less 0 0
Due after one year through five years 0 25,000
Total long-term debt $ 0 $ 25,000
Maximum [Member]    
Debt Instrument [Line Items]    
Overnight repurchase agreements maturity period 4 days  
Minimum [Member]    
Debt Instrument [Line Items]    
Overnight repurchase agreements maturity period 1 day  
Weighted Average [Member]    
Weighted Avg Rate [Abstract]    
Due in one year or less 0.00% 0.00%
Due after one year through five years 0.00% 4.83%
Total long-term debt 0.00% 4.83%