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Net Income Per Ordinary Share (Tables) | 12 Months Ended
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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, 2021 | December 31, 2020 | December 31, 2019
Weighted average number of ordinary shares outstanding for basic net income per ordinary share | 67,110,186 |  | 52,859,911 |  | 53,859,537 |
Effect of dilutive share options outstanding | 958,125 |  | 423,674 |  | 473,924 |
Weighted average number of ordinary shares outstanding for diluted net income per ordinary share | 68,068,311 |  | 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, 2021 | December 31, 2020 | December 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, 2021 | December 31, 2020 | December 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 |

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- Definition Schedule of Adjusted Earnings Per Share, Basic and Diluted [Table Text Block] + References No definition available. + Details
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- References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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