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Stock-based Employee Compensation, Stock Option Plans, and Deferred Compensation Plan for Directors - Summary of Option Activity (Details) - USD ($)
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Number of Shares    
Outstanding at beginning of period (in shares) 1,820,000  
Granted (in shares) 0  
Exercised (in shares) (4,375) (4,375)
Expired/Forfeited (in shares) (475,125)  
Outstanding at end of period (in shares) 1,340,500  
Exercisable at end of period (in shares) 1,100,750  
Weighted Average Exercise Price per share    
Outstanding at beginning of period (in usd per share) $ 49.41  
Granted (in usd per share) 0  
Exercised (in usd per share) 33.79  
Expired/Forfeited (in usd per share) 51.01  
Outstanding at end of period (in usd per share) 48.89  
Exercisable at end of period (in usd per share) $ 50.75  
Aggregate Intrinsic Value    
Outstanding at beginning of period $ 1,197,380  
Granted 0  
Exercised 15,306  
Expired/Forfeited 0  
Outstanding at end of period 570,298  
Exercisable at end of period $ 213,815