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Share Capital - Disclosure of Number and Weighted Average Exercise Prices of Other Equity Instruments (Detail) - shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Restricted Share Units [member] |  |
Disclosure Of Number And Weighted Average Exercise Prices Of Other Equity Instruments Explanatory [Line Items] |  |
Outstanding | 543,277 | 143,363
Granted | 488,560 | 690,998
Exercised | (220,289) |
Settled |  | (287,634)
Forfeited | (8,500) | (3,450)
Outstanding | 803,048 | 543,277
Performance Based Restricted Share Units [member] |  |
Disclosure Of Number And Weighted Average Exercise Prices Of Other Equity Instruments Explanatory [Line Items] |  |
Outstanding | 1,142,544 | 441,994
Granted | 143,740 | 822,100
Exercised | (129,706) |
Settled |  | (121,550)
Forfeited | (44,200) |
Outstanding | 1,112,378 | 1,142,544

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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The number of other equity instruments (ie other than share options) forfeited in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 + Details
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