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Investment Properties - Net Book Value of Investment Properties (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | $ 730 | $ 720 | $ 763
Gross carrying amount [Member] |  |  |
Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | 1,183 | 1,125 |
Accumulated depreciation [Member] |  |  |
Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | (453) | (405) |
Land [Member] |  |  |
Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | 467 | 430 |
Land [Member] | Gross carrying amount [Member] |  |  |
Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | 467 | 430 |
Office buildings for rent [Member] |  |  |
Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | 263 | 290 |
Office buildings for rent [Member] | Gross carrying amount [Member] |  |  |
Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | 716 | 695 |
Office buildings for rent [Member] | Accumulated depreciation [Member] |  |  |
Disclosure of detailed information about investment property [Line Items] |  |  |
Investment properties | $ (453) | $ (405) |

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- Definition The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee as a right-of-use asset) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2019-01-01 -Paragraph 76 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=40&code=ifrs-tx-2019-en-r&anchor=para_76&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2019-01-01 -Paragraph 79 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=40&code=ifrs-tx-2019-en-r&anchor=para_79_d&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Details
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- Details
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