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Stock-Based Compensation (Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Number of Stock Options      
Outstanding, beginning of period (in shares) 414,769    
Granted (in shares) 0    
Exercised (in shares) (62,083)    
Canceled/Forfeited (in shares) (2,500)    
Expired (in shares) 0    
Outstanding, end of period (in shares) 350,186 414,769  
Exercisable (in shares) 299,353    
Weighted Average Exercise Price      
Outstanding, weighted average exercise price, beginning of period (in dollars per share) $ 19.07    
Granted, weighted average exercise price (in dollars per share) 0.00    
Exercised, weighted average exercise price (in dollars per share) 16.79    
Canceled/Forfeited, weighted average exercise price (in dollars per share) 22.90    
Expired, weighted average exercise price (in dollars per share) 0.00    
Outstanding, weighted average exercise price, end of period (in dollars per share) 19.45 $ 19.07  
Exercisable, weighted average exercise price (in dollars per share) $ 18.41    
Weighted Average Remaining Contractual Life (years)      
Outstanding, weighted average remaining contractual life 4 years 2 months 29 days 5 years 29 days  
Exercisable, weighted average remaining contractual life 3 years 6 months 46 days    
Aggregate Intrinsic Value      
Outstanding, aggregate intrinsic value $ 4,453 $ 1,814  
Exercised, aggregate intrinsic value 625 $ 481 $ 48
Exercisable, aggregate intrinsic value $ 4,118