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Stock-Based Compensation - Restricted and Performance Stock Units Rollforward (Details) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restricted Stock Units      
Shares      
Nonvested at the beginning of the period (in shares) 51,276    
Granted (in shares) 313,502 0 37,235
Vested (in shares) (5,615)    
Forfeited (in shares) (3,729)    
Nonvested at the end of the period (in shares) 355,434 51,276  
Weighted Average Grant-Date Fair Value      
Nonvested at the beginning of the period (in dollars per share) $ 33.24    
Grants in period, weighted average grant date fair value 34.45   $ 33.61
Vested (in dollars per share) 26.71    
Forfeited (in dollars per share) 33.95    
Nonvested at the end of the period (in dollars per share) $ 34.40 $ 33.24  
Performance Shares      
Shares      
Nonvested at the beginning of the period (in shares) 200,218    
Granted (in shares) 50,868 96,056 125,232
Vested (in shares) 0    
Forfeited (in shares) (3,375)    
Expired (in shares) (112,328)    
Nonvested at the end of the period (in shares) 135,383 200,218  
Weighted Average Grant-Date Fair Value      
Nonvested at the beginning of the period (in dollars per share) $ 35.27    
Grants in period, weighted average grant date fair value 34.97 $ 37.89 $ 33.28
Forfeited (in dollars per share) 35.96    
Expired (in dollars per share) 33.28    
Nonvested at the end of the period (in dollars per share) $ 36.79 $ 35.27