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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]    
Total intrinsic value of options exercised $ 0 $ 84
Restricted Shares and Performance Based Shares    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Expected quarterly dividends per share (in dollars per share) $ 0.3275 $ 0.3075
Risk-free interest rate 0.32% 0.72%
Restricted Stock    
Restricted Stock, Shares    
Outstanding at beginning of period (in shares) 168,061  
Granted (in shares) 213,515  
Exercised (in shares) (210,572)  
Forfeited (in shares) (1,741)  
Outstanding at end of period (in shares) 169,263  
Restricted Stock, Weighted- Average Grant Date Fair Value    
Outstanding at beginning of period (in dollars per share) $ 40.77  
Granted (in dollars per share) 43.48 $ 36.73
Exercised (in dollars per share) 40.73  
Forfeited (in dollars per share) 43.72  
Outstanding at end of period (in dollars per share) 43.71  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]    
Weighted-average grant date fair value (in dollars per share) $ 43.48 $ 36.73
Total fair value of restricted shares that vested $ 10,018 $ 11,740
Market-Based Shares    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Risk-free interest rate 0.29% 0.72%
Dividend yield 2.76% 2.51%
Expected volatility 33.69% 19.41%