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Directors' and key management remuneration (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure Of Information About Key Management Personnel [Abstract] |
Summary of aggregate remuneration | Aggregate remuneration, calculated in accordance with the UK Companies Act 2006, of the directors of the parent companies was as follows:
| 2019 US$'000 |  | 2018 US$'000 |  | 2017 US$'000 |
Emoluments | 7,524 |  | 9,069 |  | 8,339 |
Long-term incentive plans | 4,748 |  | 2,923 |  | 4,685 |
| 12,272 |  | 11,992 |  | 13,024 |
Pension contributions: defined contribution plans | 42 |  | 80 |  | 135 |
Gains made on exercise of share options | — |  | 107 |  | — |
Summary of aggregate compensation, representing the expense | Aggregate compensation, representing the expense recognised under IFRS, as defined in note 1, of the Group’s key management, including directors, was as follows:
| 2019 US$'000 |  | 2018 US$'000 |  | 2017 US$'000 |
Short-term employee benefits and costs | 22,075 |  | 23,978 |  | 23,095 |
Post-employment benefits | 477 |  | 629 |  | 415 |
Employment termination benefits | 310 |  | 69 |  | — |
Share-based payments | 17,632 |  | 14,916 |  | 8,033 |
Total | 40,494 |  | 39,592 |  | 31,543 |

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- Definition The disclosure of detailed information about aggregate expenses associated with remunerations to key management personnel. Includes short-term employee benefits, post-employment benefits, employment termination benefits, and share-based payments. + References No definition available. + Details
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- Definition The disclosure of detailed information about aggregate remuneration paid to key management personnel. Includes emoluments, long-term incentive plans, pension contributions to defined contribution plans, and gains / losses on exercise of share options. + References No definition available. + Details
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- Definition Disclosure Of Information About Key Management Personnel [Abstract] + References No definition available. + Details
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