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Share-Based Compensation And Other Related Information - Additional Information (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 $ / shares shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares
Disclosure of share-based payment arrangements [Abstract] |  |  |
Share-based compensation | $ |  | $ 4,448 | $ 2,957
Granted (shares) |  | 22,788 |
Granted (shares) |  |  | 149,163
Common shares issued in connection with exercise of stock options (shares) |  | 244,299 | 125,762
Granted pursuant to the Tahoe Acquisition (shares) |  | 835,874 |
Remaining contractual life of replacement options |  | 12 months |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Number of shares issued in lieu of directors fees (shares) |  | 22,335 | 10,338
Directors' remuneration expense | $ |  | $ 200 | $ 200
Number of shares authorised (shares) | 400,000,000 | 400,000,000 |
Bottom of range [member] |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price, share options granted (CAD$ per share) | $ / shares | $ 20.52 |  |
Top of range [member] |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Exercise price, share options granted (CAD$ per share) | $ / shares | $ 97.26 |  |

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- Definition The exercise price of share options granted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2019-03-27 + Details
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