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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Total
Ordinary shares
Additional Paid-in Capital
Other Undenominated Capital
Accumulated Other Comprehensive Loss
Retained Earnings
Beginning balance (in shares) at Dec. 31, 2020   52,788,093        
Beginning balance at Dec. 31, 2020 $ 1,850,236 $ 4,580 $ 617,104 $ 1,134 $ (35,477) $ 1,262,895
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 97,122         97,122
Issue of restricted share units / performance share units (in shares)   70,097        
Issue of restricted share units / performance share units 5 $ 5        
Non-cash stock compensation expense 6,310   6,310      
Share issuance costs (5)   (5)      
Other comprehensive income (loss), net of tax (19,497)       (19,497)  
Ending balance (in shares) at Mar. 31, 2021   52,858,190        
Ending balance at Mar. 31, 2021 1,934,171 $ 4,585 623,409 1,134 (54,974) 1,360,017
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 73,865         73,865
Exercise of share options (in shares)   4,020        
Exercise of share options 170   170      
Issue of restricted share units / performance share units (in shares)   95,853        
Issue of restricted share units / performance share units 7 $ 7        
Non-cash stock compensation expense 8,495   8,495      
Share issuance costs (5)   (5)      
Other comprehensive income (loss), net of tax 11,240       11,240  
Ending balance (in shares) at Jun. 30, 2021   52,958,063        
Ending balance at Jun. 30, 2021 $ 2,027,943 $ 4,592 632,069 1,134 (43,734) 1,433,882
Beginning balance (in shares) at Dec. 31, 2021 81,554,683 81,554,683        
Beginning balance at Dec. 31, 2021 $ 8,066,827 $ 6,640 6,733,910 1,134 (90,937) 1,416,080
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 111,970         111,970
Exercise of share options (in shares)   84,090        
Exercise of share options 7,497 $ 6 7,491      
Issue of restricted share units / performance share units (in shares)   74,769        
Issue of restricted share units / performance share units 4 $ 4        
Non-cash stock compensation expense 18,840   18,840      
Share issuance costs (3)   (3)      
Share repurchase program (in shares)   (420,530)        
Share repurchase program (99,983) $ (28)   28   (99,983)
Share repurchase costs (17)         (17)
Other comprehensive income (loss), net of tax (35,818)       (35,818)  
Ending balance (in shares) at Mar. 31, 2022   81,293,012        
Ending balance at Mar. 31, 2022 $ 8,069,317 $ 6,622 6,760,238 1,162 (126,755) 1,428,050
Beginning balance (in shares) at Dec. 31, 2021 81,554,683 81,554,683        
Beginning balance at Dec. 31, 2021 $ 8,066,827 $ 6,640 6,733,910 1,134 (90,937) 1,416,080
Ending balance (in shares) at Jun. 30, 2022 81,526,607 81,526,607        
Ending balance at Jun. 30, 2022 $ 8,146,013 $ 6,637 6,787,365 1,162 (192,935) 1,543,784
Beginning balance (in shares) at Mar. 31, 2022   81,293,012        
Beginning balance at Mar. 31, 2022 8,069,317 $ 6,622 6,760,238 1,162 (126,755) 1,428,050
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 115,734         115,734
Exercise of share options (in shares)   75,671        
Exercise of share options 7,653 $ 4 7,649      
Issue of restricted share units / performance share units (in shares)   157,924        
Issue of restricted share units / performance share units 11 $ 11        
Non-cash stock compensation expense 19,478   19,478      
Other comprehensive income (loss), net of tax $ (66,180)       (66,180)  
Ending balance (in shares) at Jun. 30, 2022 81,526,607 81,526,607        
Ending balance at Jun. 30, 2022 $ 8,146,013 $ 6,637 $ 6,787,365 $ 1,162 $ (192,935) $ 1,543,784