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Financial Risk Management Objectives - Sensitivity of Profit Before Tax and Equity to a Reasonably Possible Change of Each Foreign Currency Exchange Rates (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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5% increase in rate [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Percentage of change of foreign currency exchange rates | 5.00% | 5.00%
Change in profit before tax due to change of foreign currency exchange rates | $ (2,161) | $ 126
5% increase in rate [Member] | Thai Baht (THB) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates |  | 22
5% increase in rate [Member] | Singapore dollars (SGD) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | 5 | 4
5% increase in rate [Member] | Taiwan dollar (TWD) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | 9 | (3)
5% increase in rate [Member] | Hong Kong, dollar (HKD) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | 68 | 52
5% increase in rate [Member] | Euro (EUR) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | $ (22) | $ (10)
5% decrease in rate [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Percentage of change of foreign currency exchange rates | (5.00%) | (5.00%)
Change in profit before tax due to change of foreign currency exchange rates | $ 2,161 | $ (126)
5% decrease in rate [Member] | Thai Baht (THB) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates |  | (22)
5% decrease in rate [Member] | Singapore dollars (SGD) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | (5) | (4)
5% decrease in rate [Member] | Taiwan dollar (TWD) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | (9) | 3
5% decrease in rate [Member] | Hong Kong, dollar (HKD) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | (68) | (52)
5% decrease in rate [Member] | Euro (EUR) [Member] |  |
Disclosure of nature and extent of risks arising from financial instruments [Line Items] |  |
Change in profit before tax due to change of foreign currency exchange rates | $ 22 | $ 10

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- Definition The amount of risk exposure associated with financial instruments with a shared characteristic that identifies a concentration of risks. [Refer: Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph B8 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_B8_c&doctype=Appendix&subtype=B -URIDate 2021-03-24 + Details
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