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Share-Based Compensation - Activity for Nonvested Share Awards (Details) - $ / shares
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Restricted Stock      
Shares      
Nonvested at beginning of year (in shares) 91,574    
Granted (in shares) 18,967    
Vested (in shares) (29,030)    
Forfeited (in shares) (6,099)    
Nonvested at end of year (in shares) 75,412 91,574  
Weighted-Average Grant Date Fair Value      
Nonvested at beginning of year (in dollars per share) $ 59.30    
Granted (in dollars per share) 78.78    
Vested (in dollars per share) 58.32    
Forfeitures (in dollars per share) 79.45    
Nonvested at end of year (in dollars per share) $ 62.94 $ 59.30  
Performance Shares      
Shares      
Nonvested at beginning of year (in shares) 130,352    
Granted (in shares) 63,849    
Vested (in shares) (43,198) (43,621) (29,595)
Forfeited (in shares) (16,240)    
Nonvested at end of year (in shares) 134,763 130,352  
Weighted-Average Grant Date Fair Value      
Nonvested at beginning of year (in dollars per share) $ 73.96    
Granted (in dollars per share) 77.19    
Vested (in dollars per share) 63.69    
Forfeitures (in dollars per share) 77.99    
Nonvested at end of year (in dollars per share) $ 78.29 $ 73.96  
Restricted Stock Units (RSUs)      
Shares      
Nonvested at beginning of year (in shares) 90,971    
Granted (in shares) 52,477    
Vested (in shares) (15,673)    
Forfeited (in shares) (13,071)    
Nonvested at end of year (in shares) 114,704 90,971  
Weighted-Average Grant Date Fair Value      
Nonvested at beginning of year (in dollars per share) $ 78.06    
Granted (in dollars per share) 68.48    
Vested (in dollars per share) 83.57    
Forfeitures (in dollars per share) 72.59    
Nonvested at end of year (in dollars per share) $ 73.55 $ 78.06