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Share Capital (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 24, 2018
Disclosure of reserves within equity [line items]
Stock authorized for repurchase (in shares)		25,513,043
Public float authorization		10.00%
Repurchased and canceled (in shares)	2,748,352
Repurchased and canceled	$ 11.4
Repurchased and canceled (usd per share)	$ 4.17
Reduction of issued capital	$ 26.1
Gain recognized in deficit due to repurchased and cancelled shares	$ 14.7

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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The decrease in equity resulting from a reduction in issued capital. [Refer: Issued capital]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 106
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2019-03-27

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