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Stock Compensation Plans (Details) - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Granted, Weighted-Average Grant-date Fair Value (in dollars per share) $ 23.53 $ 24.50
Restricted Stock [Member]    
Nonvested, options, Beginning Balance (in shares) 25,450  
Granted, options (in shares) 9,650  
Vested, opitons (in shares) (10,400)  
Forfeited, options (in shares) (1,250)  
Nonvested, options, Ending Balance (in shares) 23,450 25,450
Nonvested, Weighted-Average Grant-date Fair Value, Beginning Balance (in dollars per share) $ 23.03  
Granted, Weighted-Average Grant-date Fair Value (in dollars per share) 23.53  
Vested, Weighted-Average Grant-date Fair Value (in dollars per share) 20.25  
Forfeited, Weighted-Average Grant-date Fair Value (in dollars per share) 24.70  
Nonvested, Weighted-Average Grant-date Fair Value, Ending Balance (in dollars per share) $ 24.38 $ 23.03