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Net Income Per Common Share - Computation of Basic and Diluted Net Income Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Earnings Per Share [Abstract]    
Net income $ 40,348 $ 104,124
Computation of basic and diluted net income per common share    
Weighted average common shares outstanding during the period (for basic calculation) (in shares) 38,017 39,608
Dilutive effect of other potential common shares (in shares) 198 348
Weighted average common shares and potential common shares (for diluted calculation) (in shares) 38,215 39,956
Net income per common share - Basic (in dollars per share) $ 1.06 $ 2.63
Net income per common share - Diluted (in dollars per share) $ 1.06 $ 2.61