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Employee Benefit - Maturity Profile of Defined Benefit Obligation (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of defined benefit plans [Line Items] |  |
Expected payments | $ 25,106 | $ 25,137
Weighted average duration of defined benefit obligation |  | 9 years
Bottom of range [Member] |  |
Disclosure of defined benefit plans [Line Items] |  |
Weighted average duration of defined benefit obligation | 9 years |
Top of range [Member] |  |
Disclosure of defined benefit plans [Line Items] |  |
Weighted average duration of defined benefit obligation | 10 years |
Within one year [Member] |  |
Disclosure of defined benefit plans [Line Items] |  |
Expected payments | $ 1,384 | $ 1,340
Between 2 and 5 years [Member] |  |
Disclosure of defined benefit plans [Line Items] |  |
Expected payments | 2,040 | 2,489
Between 6 and 10 years [Member] |  |
Disclosure of defined benefit plans [Line Items] |  |
Expected payments | 4,568 | 4,391
Beyond 10 years [Member] |  |
Disclosure of defined benefit plans [Line Items] |  |
Expected payments | $ 17,114 | $ 16,917

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- Definition The estimate of the expected contributions to be made to a defined benefit plan for the next annual reporting period. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 147 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_147_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 148 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_148_d_iii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The weighted average duration of a defined benefit obligation. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 147 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_147_c&doctype=Standard -URIDate 2020-01-01 + Details
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