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Net Income Per Ordinary Share (Tables)
 12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Reconciliation of Number of Shares Used in Computation of Basic and Diluted Net Income Per Ordinary Share
The reconciliation of the number of shares used in the computation of basic and diluted net income per ordinary share is as follows:
December 31, 2021December 31, 2020December 31, 2019
Weighted average number of ordinary shares outstanding for basic net income per ordinary share67,110,186 52,859,911 53,859,537 
Effect of dilutive share options outstanding958,125 423,674 473,924 
Weighted average number of ordinary shares outstanding for diluted net income per ordinary share68,068,311 53,283,585 54,333,461 
Reconciliation of Net Income Attributable to the Group Per the Statement of Operating Income and Net Income Used For Net Income Per Ordinary Share
The reconciliation between net income attributable to the Group per the Consolidated Statement of Operations and the net income used to calculate net income per ordinary share attributable to the Group is as follows:
December 31, 2021December 31, 2020December 31, 2019
(in thousands)
Net income attributable to the Group$153,185 332,331 $373,986 
Noncontrolling interest adjustment to redemption amount— (4,522)(5,048)
Net income attributable to the Group (including NCI redemption adjustment)153,185 327,809 368,938 
December 31, 2021December 31, 2020December 31, 2019
Net income per Ordinary Share attributable to the Group (including NCI redemption adjustment):
Basic $2.28 $6.20 $6.85 
Diluted $2.25 $6.15 $6.79