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Stock-Based Compensation (Summary of Unvested Stock Options) (Details) - $ / shares
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Shares      
Unvested, beginning of period (in shares) 20,865    
Granted (in shares) 0 0 32,750
Vested (in shares) (10,432)    
Canceled/Forfeited (in shares) 0    
Unvested, end of period (in shares) 10,433 20,865  
Weighted Average Grant Date Fair Value      
Unvested, beginning of period (in dollars per share) $ 11.93    
Granted (in dollars per share) 0 $ 0 $ 11.93
Vested (in dollars per share) 11.93    
Canceled/Forfeited (in dollars per share) 0    
Unvested, end of period (in dollars per share) $ 11.93 $ 11.93