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Condensed Consolidated Statement of Equity Statement - USD ($)
shares in Thousands, $ in Thousands
Total
South African Joint Venture [Member]
Common Stock
Additional Paid-in Capital
Retained Earnings
AOCI Attributable to Parent
Treasury Stock, Common
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Treasury stock, common (in shares)             62,790  
Common stock, shares outstanding, beginning balance (in shares) at Dec. 31, 2023     73,681          
Balance, beginning of period at Dec. 31, 2023 $ 848,032   $ 7 $ 586,155 $ 1,679,500 $ (29,046) $ 1,407,018 $ 18,434
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common stock repurchased and net settlements of restricted stock awards (in shares)     (2,219)       (2,219)  
Common stock repurchased and net settlements of restricted stock awards $ 95,681           $ 95,681  
Exercise and net settlement of stock options (in shares) 54   34       20  
Exercise and net settlement of stock options $ 979     1,825     $ (846)  
Issuance of restricted stock, net of forfeitures (in shares)     696          
Stock-based compensation 19,531     19,531        
Foreign currency translation adjustment (9,446)         (9,574)   (128)
Cash flow hedge (net of tax) 361         361    
Dividends on common stock (45,880)       (45,880)      
Divestiture of business   $ 102           102
Distribution of noncontrolling interest 0              
Investment of noncontrolling interest 3,969             3,969
Net income $ 138,099       134,589     3,510
Common stock, shares outstanding, ending balance (in shares) at Sep. 30, 2024 72,192   72,192          
Balance, end of period at Sep. 30, 2024 $ 860,066   $ 7 607,511 1,768,209 (38,259) $ 1,503,545 26,143
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Treasury stock, common (in shares)             64,574  
Common stock, shares outstanding, beginning balance (in shares) at Jun. 30, 2024     72,606          
Balance, beginning of period at Jun. 30, 2024 832,356   $ 7 600,222 1,728,102 (36,746) $ 1,483,306 24,077
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common stock repurchased and net settlements of restricted stock awards (in shares)     (455)       (455)  
Common stock repurchased and net settlements of restricted stock awards 20,239           $ 20,239  
Exercise and net settlement of stock options (in shares)     8          
Exercise and net settlement of stock options 337     337        
Issuance of restricted stock, net of forfeitures (in shares)     33          
Stock-based compensation 6,952     6,952        
Foreign currency translation adjustment (81)         (735)   654
Cash flow hedge (net of tax) (778)         (778)    
Dividends on common stock (15,171)       (15,171)      
Divestiture of business   $ 102           102
Net income $ 56,588       55,278     1,310
Common stock, shares outstanding, ending balance (in shares) at Sep. 30, 2024 72,192   72,192          
Balance, end of period at Sep. 30, 2024 $ 860,066   $ 7 607,511 1,768,209 (38,259) $ 1,503,545 26,143
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Treasury stock, common (in shares) 65,029           65,029  
Treasury stock, common (in shares) 65,091           65,091  
Common stock, shares outstanding, beginning balance (in shares) at Dec. 31, 2024 72,157   72,157          
Balance, beginning of period at Dec. 31, 2024 $ 875,997   $ 7 614,381 1,787,851 (48,291) $ (1,506,229) 28,278
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common stock repurchased and net settlements of restricted stock awards (in shares)     (226)       (226)  
Common stock repurchased and net settlements of restricted stock awards 8,367           $ 8,367  
Issuance of restricted stock, net of forfeitures (in shares)     730          
Stock-based compensation 22,175     22,175        
Foreign currency translation adjustment 18,011         16,454   1,557
Cash flow hedge (net of tax) (2,922)         (2,922)    
Dividends on common stock (45,692)       (45,692)      
Distribution of noncontrolling interest 2,946             (2,946)
Investment of noncontrolling interest 5,513             5,513
Net income $ 24,366       21,474     2,892
Common stock, shares outstanding, ending balance (in shares) at Sep. 30, 2025 72,661   72,661          
Balance, end of period at Sep. 30, 2025 $ 886,135   $ 7 636,556 1,763,633 (34,759) $ (1,514,596) 35,294
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Treasury stock, common (in shares)             65,310  
Common stock, shares outstanding, beginning balance (in shares) at Jun. 30, 2025     72,651          
Balance, beginning of period at Jun. 30, 2025 863,363   $ 7 629,071 1,758,361 (39,782) $ (1,514,427) 30,133
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common stock repurchased and net settlements of restricted stock awards (in shares)     (7)       (7)  
Common stock repurchased and net settlements of restricted stock awards (169)           $ (169)  
Issuance of restricted stock, net of forfeitures (in shares)     17          
Stock-based compensation 7,485     7,485        
Foreign currency translation adjustment 4,546         4,175   371
Cash flow hedge (net of tax) 848         848    
Dividends on common stock (15,256)       (15,256)      
Investment of noncontrolling interest 3,500             3,500
Net income $ 21,818       20,528     1,290
Common stock, shares outstanding, ending balance (in shares) at Sep. 30, 2025 72,661   72,661          
Balance, end of period at Sep. 30, 2025 $ 886,135   $ 7 $ 636,556 $ 1,763,633 $ (34,759) $ (1,514,596) $ 35,294
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Treasury stock, common (in shares) 65,317           65,317