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Benefits Plans (Summary of Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Benefits Plans [Abstract]      
Outstanding, Beginning Balance - Number of Options 1,200,975 1,104,600  
Options Granted - Number of Options   98,875  
Options Exercised - Number of Options (500) (1,500)  
Options Forfeited - Number of Options (8,127) (1,000)  
Outstanding, Ending Balance - Number of Options 1,192,348 1,200,975 1,104,600
Outstanding, Range of Exercise Price, Lower Range Limit (per share) $ 8.93 $ 8.93 $ 8.93
Outstanding, Range of Exercise Price, Upper Range Limit (per share) 13.32 13.32 13.32
Options Shares Forfeited - Range of Exercise Prices, Lower Range Limit 11.26 10.55  
Options Shares Forfeited - Range of Exercise Prices, Upper Range Limit 12.46    
Options Granted, Exercise Price   12.46  
Options Exercised - Exercise Price 10.55    
Option Shares Exercised - Range of Exercise Prices, Lower Range Limit   10.55  
Outstanding Number of Options, Beginning Balance - Weighted Average Exercise Price 11.45 11.36  
Number of Options Granted - Weighted Average Exercise Price   12.46  
Number of Options, Exercised - Weighted Average Exercise Price 10.55 10.55  
Number of Options Forfeited - Weighted Average Exercise Price 11.68 10.55  
Outstanding Number of Options, Ending Balance - Weighted Average Exercise Price $ 11.45 $ 11.45 $ 11.36
Outstanding, Weighted Average Remaining Contractual Term 6 years 14 days 7 years 18 days 7 years 10 months 2 days
Options Outstanding, Intrinsic Value $ 333 $ 2,806 $ 194
Exercisable - Number of Options 817,536