Share-based compensation expense - Schedule of Fair Value Assumptions For Options Granted (Details) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2023 USD ($) shares $ / shares	Mar. 31, 2022 USD ($) shares $ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Expected dividends \| $	$ 0	$ 0
Minimum
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted average share price (in USD per share)	$ 1.99	$ 14.00
Strike price (in USD per share)	$ 1.99	$ 14.00
Expected volatility, in %	75.00%	70.00%
Award life, in years \| shares	6.08	6.08
Risk-free interest rate, in %	339.00%	1.46%
Maximum
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted average share price (in USD per share)	$ 5.45	$ 19.69
Strike price (in USD per share)	$ 5.45	$ 19.69
Expected volatility, in %	80.00%
Risk-free interest rate, in %	4.13%	1.73%

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 47
-Subparagraph a
-Clause i
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-URIDate 2022-03-24

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The option life of share options granted.

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- Definition

The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

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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

No definition available.

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- Definition

The exercise price of share options granted.

+ References

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- Definition

The amount of an expected dividend used to calculate the fair value of share options granted.

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- Definition

The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

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