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Employee Stock Purchase Plan, Stock Options and Warrants - Changes in PSUs and RSUs (Details) - $ / shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Stock-Settled Performance-Based Restricted Stock Units      
Stock Units      
Beginning balance (in shares) 163,000    
Granted (in shares) 97,000    
rTSR adjustment (in shares) 8,000    
Vested (in shares) (44,000) (26,000) 0
Forfeited (in shares) (45,000)    
Balance at December 31 (in shares) 179,000 163,000  
Weighted Average Grant Date Fair Value      
Beginning balance (in dollars per share) $ 53.71    
Granted (in dollars per share) 64.54 $ 61.39 $ 43.63
rTSR adjustment (in dollars per share) 65.03    
Vested (in dollars per share) 65.03    
Forfeited (in dollars per share) 60.81    
Balance at December 31 (in dollars per share) $ 65.20 $ 53.71  
Stock-Settled Performance-Based Restricted Stock Units | rTSR      
Stock Units      
Multiplying factor 125.00%    
Stock-Settled Performance-Based Restricted Stock Units | rTSR | Minimum      
Stock Units      
Multiplying factor 75.00%    
Stock-Settled Performance-Based Restricted Stock Units | rTSR | Maximum      
Stock Units      
Multiplying factor 125.00%    
Restricted Stock Units      
Stock Units      
Beginning balance (in shares) 26,000    
Granted (in shares) 31,000 26,000 34,000
Vested (in shares) (26,000) (34,000) 0
Balance at December 31 (in shares) 31,000 26,000  
Weighted Average Grant Date Fair Value      
Beginning balance (in dollars per share) $ 61.77    
Granted (in dollars per share) 59.02 $ 61.77 $ 42.98
Vested (in dollars per share) 61.77    
Balance at December 31 (in dollars per share) $ 59.02 $ 61.77