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Consolidated Statements of Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common shares
Additional  Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2023   179,494,132      
Beginning balance, value at Dec. 31, 2023 $ 2,248,392 $ 1,789 $ 1,883,944 $ 1,085,209 $ (722,550)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common shares on exercise of options (in shares)   135,051      
Issuance of common shares on exercise of options (Note 15) 3,931 $ 1 3,930    
Issuance of common shares under the employee stock purchase plan (in shares)   261,281      
Issuance of common shares under the employee stock purchase plan (Note 15) 8,239 $ 3 8,236    
Net settlement on vesting of restricted share unit (in shares)   307,298      
Net settlement on vesting of restricted share units (Note 15) (4,428) $ 3 (4,431)    
Net settlement on vesting of performance units (in shares)   869,713      
Net settlement on vesting of performance units (Note 15) $ (16,904) $ 9 (16,913)    
Stock repurchased and retired (in shares) (4,720,308) (4,720,308)      
Stock repurchased and retired (Note 16) $ (167,562) $ (47)   (167,515)  
Expenses and taxes related to stock repurchased (Note 16) (294)     (294)  
Stock-based compensation expense (Note 15) 47,276   47,276    
Comprehensive income (loss):          
Net income 371,755     371,755  
Other comprehensive income (loss) (13,944)       (13,944)
Dividend (81,768)     (81,768)  
End balance (in shares) at Sep. 30, 2024   176,347,167      
End balance, value at Sep. 30, 2024 2,394,693 $ 1,758 1,922,042 1,207,387 (736,494)
Beginning balance (in shares) at Jun. 30, 2024   178,177,581      
Beginning balance, value at Jun. 30, 2024 2,337,759 $ 1,776 1,900,015 1,176,459 (740,491)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common shares under the employee stock purchase plan (in shares)   69,393      
Issuance of common shares under the employee stock purchase plan (Note 15) 2,450 $ 1 2,449    
Net settlement on vesting of restricted share unit (in shares)   35,513      
Net settlement on vesting of restricted share units (Note 15) (148)   (148)    
Stock repurchased and retired (in shares)   (1,935,320)      
Stock repurchased and retired (Note 16) (74,932) $ (19)   (74,913)  
Expenses and taxes related to stock repurchased (Note 16) (38)     (38)  
Stock-based compensation expense (Note 15) 19,726   19,726    
Comprehensive income (loss):          
Net income 132,818     132,818  
Other comprehensive income (loss) 3,997       3,997
Dividend (26,939)     (26,939)  
End balance (in shares) at Sep. 30, 2024   176,347,167      
End balance, value at Sep. 30, 2024 $ 2,394,693 $ 1,758 1,922,042 1,207,387 (736,494)
Beginning balance (in shares) at Dec. 31, 2024 174,661,943 174,661,943      
Beginning balance, value at Dec. 31, 2024 $ 2,389,611 $ 1,740 1,945,261 1,236,696 (794,086)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common shares on exercise of options (in shares) 185,920 185,920      
Issuance of common shares on exercise of options (Note 15) $ 6,753 $ 2 6,751    
Issuance of common shares under the employee stock purchase plan (in shares)   178,811      
Issuance of common shares under the employee stock purchase plan (Note 15) 7,594 $ 2 7,592    
Net settlement on vesting of restricted share unit (in shares)   563,166      
Net settlement on vesting of restricted share units (Note 15) (13,818) $ 6 (13,824)    
Net settlement on vesting of performance units (in shares)   738,490      
Net settlement on vesting of performance units (Note 15) $ (18,054) $ 7 (18,061)    
Stock repurchased and retired (in shares) (3,919,239) (3,919,239)      
Stock repurchased and retired (Note 16) $ (182,944) $ (39)   (182,905)  
Expenses and taxes related to stock repurchased (Note 16) (978)     (978)  
Stock-based compensation expense (Note 15) 64,055   64,055    
Comprehensive income (loss):          
Net income 409,400     409,400  
Other comprehensive income (loss) (28,388)       (28,388)
Dividend $ (88,701)     (88,701)  
End balance (in shares) at Sep. 30, 2025 172,409,091 172,409,091      
End balance, value at Sep. 30, 2025 $ 2,544,530 $ 1,718 1,991,774 1,373,512 (822,474)
Beginning balance (in shares) at Jun. 30, 2025   174,264,642      
Beginning balance, value at Jun. 30, 2025 2,586,611 $ 1,735 1,964,966 1,347,377 (727,467)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common shares on exercise of options (in shares)   90,000      
Issuance of common shares on exercise of options (Note 15) 2,681 $ 1 2,680    
Issuance of common shares under the employee stock purchase plan (in shares)   56,875      
Issuance of common shares under the employee stock purchase plan (Note 15) 2,321 $ 1 2,320    
Net settlement on vesting of restricted share unit (in shares)   17,340      
Net settlement on vesting of restricted share units (Note 15) (357) $ 1 (358)    
Net settlement on vesting of performance units (in shares)   1,463      
Net settlement on vesting of performance units (Note 15) (55) $ 0 (55)    
Stock repurchased and retired (in shares)   (2,021,229)      
Stock repurchased and retired (Note 16) (89,983) $ (20)   (89,963)  
Expenses and taxes related to stock repurchased (Note 16) (440)     (440)  
Stock-based compensation expense (Note 15) 22,221   22,221    
Comprehensive income (loss):          
Net income 145,831     145,831  
Other comprehensive income (loss) (95,007)       (95,007)
Dividend $ (29,293)     (29,293)  
End balance (in shares) at Sep. 30, 2025 172,409,091 172,409,091      
End balance, value at Sep. 30, 2025 $ 2,544,530 $ 1,718 $ 1,991,774 $ 1,373,512 $ (822,474)