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v3.19.1

Property, Plant and Equipment - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 01, 2019
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Impairment loss | $ 11,000 | $ 223,000 | $ 2,524,000 |
Carrying value of motor vehicles under financial leases | 2,184,000 |  |  | $ 4,882,000
Vehicles [Member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Carrying value of motor vehicles under financial leases | $ 66,000 | 50,000 | 71,000 |
Ningbo Pacific Cable Co., Ltd. [Member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Impairment loss |  | $ 223,000 | 1,131,000 |
Siam Fiber Optics Co., Ltd. [Member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Impairment loss |  |  | 1,393,000 |
Recoverable amount of CGU |  |  | $ 0 |
Key assumptions used in calculating the value in use, discount rate |  |  | 14.80% |

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- Definition The discount rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2018-01-01 -Paragraph 130 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2018-03-01&anchor=para_130_g&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2018-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_e_v&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_98_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of assets recognised by the entity, which are leased under finance leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2019-01-01 -Name IAS -Number 17 -IssueDate 2018-01-01 -Paragraph 31 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2018-03-02&anchor=para_31_a&doctype=Standard&book=b -URIDate 2018-03-16 + Details
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- Definition The higher of an asset’s (or cash-generating unit’s) fair value less costs of disposal and its value in use. [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2018-01-01 -Paragraph 130 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2018-03-01&anchor=para_130_e&doctype=Standard -URIDate 2018-03-16 + Details
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