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Income Taxes (Schedule of Tax Losses Expiry Dates) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [line items]
Unused tax losses for which no deferred tax asset recognised	$ 72,156	$ 81,188
CANADA
Income Taxes [line items]
Unused tax losses for which no deferred tax asset recognised	$ 84,200	$ 81,000
CANADA | Bottom of range [member]
Income Taxes [line items]
Year of Expiry	2026	2026
CANADA | Top of range [member]
Income Taxes [line items]
Year of Expiry	2039	2038
ARGENTINA
Income Taxes [line items]
Unused tax losses for which no deferred tax asset recognised	$ 42,500	$ 11,900
ARGENTINA | Bottom of range [member]
Income Taxes [line items]
Year of Expiry	2020	2019
ARGENTINA | Top of range [member]
Income Taxes [line items]
Year of Expiry	2024	2023
MEXICO
Income Taxes [line items]
Unused tax losses for which no deferred tax asset recognised	$ 369	$ 349
MEXICO | Bottom of range [member]
Income Taxes [line items]
Year of Expiry	2021	2021
MEXICO | Top of range [member]
Income Taxes [line items]
Year of Expiry	2029	2028
PERU
Income Taxes [line items]
Year of Expiry	2021	2021
Unused tax losses for which no deferred tax asset recognised	$ 70	$ 238

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Expiry year of tax loss carryforwards.

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Income Taxes [line items].

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- Definition

The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2018-01-01
-Paragraph 81
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_e&doctype=Standard
-URIDate 2018-03-16

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