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Equity and Cash Incentive Program - Performance Shares and RSU Activity (Details) - $ / shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Performance Shares      
Number of Shares      
Unvested, beginning balance (in shares) 96,129    
Granted (in shares) 40,087 50,371 49,056
Forfeited (in shares) (4,690)    
Vested (in shares) (45,719)    
Unvested, ending balance (in shares) 85,807 96,129  
Weighted Average Grant-Date Fair Value      
Unvested, beginning balance (in dollars per share) $ 156.88    
Granted (in dollars per share) 196.40 $ 148.29 $ 165.71
Forfeited (in dollars per share) 167.93    
Vested (in dollars per share) 165.71    
Unvested, ending balance (in dollars per share) $ 170.03 $ 156.88  
Restricted Stock Units (RSUs)      
Number of Shares      
Unvested, beginning balance (in shares) 202,682    
Granted (in shares) 79,556 87,177 83,512
Forfeited (in shares) (14,920)    
Vested (in shares) (119,642)    
Unvested, ending balance (in shares) 147,676 202,682  
Weighted Average Grant-Date Fair Value      
Unvested, beginning balance (in dollars per share) $ 107.03    
Granted (in dollars per share) 160.21 $ 122.73 $ 119.86
Forfeited (in dollars per share) 136.85    
Vested (in dollars per share) 101.41    
Unvested, ending balance (in dollars per share) $ 135.98 $ 107.03