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CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Total shareholders' equity
Common Stock
Additional paid-in capital
Accumulated other comprehensive income
Retained earnings
Treasury shares
Beginning balance (in shares) at Dec. 31, 2022     18,128        
Par value, beginning balance at Dec. 31, 2022     $ 25        
Beginning balance at Dec. 31, 2022 $ 1,220,698     $ 709,471 $ 1,257 $ 1,169,968 $ (660,023)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)     415        
Share-based compensation   $ 24,662 $ 1 24,661      
Shares repurchased by the Company and held as treasury shares (in shares)     (173)        
Shares repurchased by the Company and held as treasury shares   (16,853)         (16,853)
Stock issued under employee stock purchase plan (in shares)     41        
Stock issued under employee stock purchase plan   4,232         4,232
Cash dividends   (11,084)       (11,084)  
Other comprehensive income (loss)   1,938     1,938    
Net income   119,552       119,552  
Ending balance (in shares) at Sep. 30, 2023     18,411        
Par value, ending balance at Sep. 30, 2023     $ 26        
Ending balance at Sep. 30, 2023 1,343,145     734,132 3,195 1,278,436 (672,644)
Beginning balance (in shares) at Jun. 30, 2023     18,450        
Par value, beginning balance at Jun. 30, 2023     $ 26        
Beginning balance at Jun. 30, 2023 1,373,561     727,534 2,639 1,314,586 (671,224)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)     (23)        
Share-based compensation   6,598 6,598      
Shares repurchased by the Company and held as treasury shares (in shares)     (16)        
Shares repurchased by the Company and held as treasury shares   (1,420)         (1,420)
Cash dividends   (11,084)       (11,084)  
Other comprehensive income (loss)   556     556    
Net income   (25,066)       (25,066)  
Ending balance (in shares) at Sep. 30, 2023     18,411        
Par value, ending balance at Sep. 30, 2023     $ 26        
Ending balance at Sep. 30, 2023 1,343,145     734,132 3,195 1,278,436 (672,644)
Beginning balance (in shares) at Dec. 31, 2023     18,269        
Par value, beginning balance at Dec. 31, 2023 26   $ 26        
Beginning balance at Dec. 31, 2023 1,328,560     741,055 3,991 1,265,420 (681,932)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)     84        
Share-based compensation   16,420   16,420      
Shares repurchased by the Company and held as treasury shares (in shares)     (81)        
Shares repurchased by the Company and held as treasury shares   (4,756)         (4,756)
Stock issued under employee stock purchase plan (in shares)     90        
Stock issued under employee stock purchase plan   4,914         4,914
Cash dividends   (21,935)       (21,935)  
Other comprehensive income (loss)   705     705    
Net income   (24,008)       (24,008)  
Ending balance (in shares) at Sep. 30, 2024     18,362        
Par value, ending balance at Sep. 30, 2024 26   $ 26        
Ending balance at Sep. 30, 2024 1,299,900     757,475 4,696 1,219,477 (681,774)
Beginning balance (in shares) at Jun. 30, 2024     18,318        
Par value, beginning balance at Jun. 30, 2024     $ 26        
Beginning balance at Jun. 30, 2024 1,333,035     754,255 2,529 1,256,266 (680,041)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)     79        
Share-based compensation   3,220   3,220      
Shares repurchased by the Company and held as treasury shares (in shares)     (35)        
Shares repurchased by the Company and held as treasury shares   (1,733)         (1,733)
Other comprehensive income (loss)   2,167     2,167    
Net income   $ (36,789)       (36,789)  
Ending balance (in shares) at Sep. 30, 2024     18,362        
Par value, ending balance at Sep. 30, 2024 26   $ 26        
Ending balance at Sep. 30, 2024 $ 1,299,900     $ 757,475 $ 4,696 $ 1,219,477 $ (681,774)