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Loss per share - Schedule of loss per share (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings per share [line items]
Dilutive effect of convertible instruments on number of ordinary shares	10,181,654	8,442,172	1,922,394
Warrants
Earnings per share [line items]
Dilutive effect of convertible instruments on number of ordinary shares	6,956,795	6,749,109	467,451
Stock options
Earnings per share [line items]
Dilutive effect of share options on number of ordinary shares	3,224,859	1,693,063	1,454,943

X

- Definition

The number of dilutive potential ordinary shares that relate to the assumed conversion of the entity's convertible instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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X

- Definition

The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's share options.

+ References

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-URIDate 2021-03-24

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- Definition

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

+ References

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