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Income Taxes (Schedule of Unrecognized Deductible Temporary Difference and Unused Tax Losses) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Income Taxes [line items] |  |
Non capital losses | $ 90,192 | $ 72,156
Provision | 14,488 | 5,074
Share issue costs | 3,894 | 2,174
Lease obligation | 555 | 656
Derivative liabilities | 1,111 | 894
Capital losses | 255 | 2,496
Investments in subsidiaries | 1,534 | 1,397
Unrecognized deductible temporary differences | 112,029 | 84,847
MEXICO |  |
Income Taxes [line items] |  |
Non capital losses | 367 | 369
Investments in subsidiaries | 248,880 | 198,214
PERU |  |
Income Taxes [line items] |  |
Non capital losses |  | 70
Investments in subsidiaries | $ 62,414 | $ 54,618

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- Definition The aggregate amount of temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements, for which deferred tax liabilities have not been recognised as a result of satisfying both of the following conditions: (a) the parent, investor, joint venturer or joint operator is able to control the timing of the reversal of the temporary difference; and (b) it is probable that the temporary difference will not reverse in the foreseeable future. [Refer: Associates [member]; Subsidiaries [member]; Temporary differences [member]; Investments in subsidiaries] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_f&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_e&doctype=Standard -URIDate 2020-01-01 + Details
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