Earnings (Losses) per share - Schedule of diluted earning per share (Details) - EUR (€) € / shares in Units, € in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings per share [abstract]
Profit used to determine diluted earnings per share	€ (143,279)	€ (73,425)	€ (64,393)
Weighted average number of outstanding shares for diluted earnings (losses) per share (in shares)	115,473,914	97,619,320	90,757,173
Diluted earnings (losses) from continuing operations per share (in euro per share)	€ (1.24)	€ (0.75)	€ (0.71)
Potential dilutive securities excluded from computation of diluted weighted-average shares outstanding (in shares)	1,504,892	5,846,267	5,481,763

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The profit (loss) attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss)]

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Instruments With Potential Future Dilutive Effect Not Included In Calculation Of Diluted Earnings Per Share

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