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Stock-Based Compensation (Summary of Unvested Stock Options) (Details) - $ / shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Employee Service Share-based Compensation, Nonvested Awards, Stock Options, Outstanding [Roll Forward]      
Unvested, beginning of period (in shares) 91,834    
Granted (in shares) 50,000    
Vested (in shares) (38,498)    
Cancelled/Forfeited (in shares) (1,500)    
Unvested, end of period (in shares) 101,836 91,834  
Employee Service Share-based Compensation, Nonvested Awards, Stock Options, Weighted Average Grant Date Fair Value [Roll Forward]      
Unvested, weighted average grant date fair value, beginning of period (in dollars per share) $ 14.19    
Granted, weighted average grant date fair value (in dollars per share) 10.33 $ 16.56 $ 10.30
Vested, weighted average grant date fair value (in dollars per share) 13.09    
Cancelled/Forfeited, weighted average grant date fair value (in dollars per share) 16.79    
Unvested, weighted average grant date fair value, end of period (in dollars per share) $ 12.67 $ 14.19