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Share-Based Compensation - Stock Options (Details) - USD ($)
9 Months Ended
Sep. 30, 2024
2020 plan  
Share-Based Compensation  
Number of shares registered 2,451,634
Plan 2004, 2012 or 2019  
Additional disclosures  
Granted (in shares) 0
Employee Stock Option  
Share-Based Compensation  
Vesting percentage 25.00%
Vesting period 4 years
Expiration period 10 years
Number of shares  
Outstanding at the beginning of the period (in shares) 107,592
Exercised (in shares) (50,155)
Outstanding at the end of the period (in shares) 57,437
Exercisable at the end of the period (in shares) 57,437
Weighted-Average Exercise Price  
Outstanding at the beginning of the period (in dollars per share) $ 72.60
Exercised (in dollars per share) 79.62
Outstanding at the end of the period (in dollars per share) 66.48
Exercisable at the end of the period (in dollars per share) $ 66.48
Weighted-Average Remaining Contractual Life  
Outstanding at the end of the period 2 years 14 days
Exercisable at the end of the period 2 years 14 days
Aggregate Intrinsic Value  
Outstanding at the end of the period $ 1,763,000
Exercisable at the end of the period $ 1,763,000
Additional disclosures  
Granted (in shares) 0
Total unrecognized compensation cost related to non vested stock option grants $ 0
Intrinsic value of stock option shares exercised $ 724,000