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Income and Expenses Items - Additional Information (Detail) $ in Thousands, ¥ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 USD ($) | Mar. 31, 2017 CNY (¥) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Disclosure of Other Operating Income and Expense [Line Items] |  |  |  |
Gain on disposal of assets classified as held for sale |  |  |  | $ 4,525
Immediate Holding Company [Member] |  |  |  |
Disclosure of Other Operating Income and Expense [Line Items] |  |  |  |
Income from discharge of liability |  |  | $ 1,537 |
Reduction of Other Current Assets [Member] |  |  |  |
Disclosure of Other Operating Income and Expense [Line Items] |  |  |  |
Recognized other expenses - others |  |  | $ 749 |
Ningbo Pacific Cable Co., Ltd. [Member] |  |  |  |
Disclosure of Other Operating Income and Expense [Line Items] |  |  |  |
Consideration amount within agreement to sell its buildings and land use rights at its Ningbo Pacific subsidiary | $ 8,800 | ¥ 60.6 |  |
Tax expense related to sale of building and land use rights | $ 800 |  |  |
Gain on disposal of assets classified as held for sale |  |  |  | $ 4,525

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- Definition Disclosure of other operating income and expense. + References No definition available. + Details
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- Definition Tax expense related to sale of building and land use rights. + References No definition available. + Details
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- Definition The gain on disposals of non-current assets. [Refer: Non-current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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