Selling and distribution expenses - Summary of Selling and Distribution Expenses (Detail) - EUR (€) € in Thousands  | 
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021  | 
Dec. 31, 2020  | 
Dec. 31, 2019  | 
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| Disclosure of detailed information about selling and distribution expenses [Line Items] | |||
| Employee benefits expenses | € 106,923 | € 26,456 | € 26,915 | 
| Depreciation of right-of-use assets | 3,408 | 1,805 | 1,312 | 
| Selling and distribution Expenses [Member] | |||
| Disclosure of detailed information about selling and distribution expenses [Line Items] | |||
| Employee benefits expenses | 1,898 | 2,907 | 4,938 | 
| Depreciation of right-of-use assets | 92 | 153 | 240 | 
| Marketing and communication costs | 421 | 478 | 548 | 
| Housing and facility costs | 60 | 358 | 194 | 
| Travelling costs | 1 | 23 | 148 | 
| Total | € 2,472 | € 3,919 | € 6,068 | 
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- Definition Disclosure of detailed information about Selling and distribution expenses. No definition available. 
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- Definition Housing and facility costs. No definition available. 
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- Definition Marketing and communication costs. No definition available. 
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- Definition Selling and distribution expenses. No definition available. 
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- Definition The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets] Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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- Definition The amount of expense arising from travel. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Details 
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