Finance cost - Schedule of Finance Cost (Detail) - EUR (€) € in Thousands  | 
6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2022  | 
Jun. 30, 2021  | 
Dec. 31, 2021  | 
Dec. 31, 2020  | 
Dec. 31, 2019  | 
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| Schedule of Finance cost [Abstract] | |||||
| Interest expenses on shareholder loans | € 8,162 | € 7,530 | € 5,568 | ||
| Interest expenses on senior debt | 6,446 | 3,240 | 170 | ||
| Finance costs on borrowings | 14,608 | 10,770 | 5,738 | ||
| Interest expenses on lease liabilities | 527 | 294 | 198 | ||
| Interest accretion on provisions | 0 | 3 | 2 | ||
| Fair value (gains)losses on derivatives | (593) | 208 | 75 | ||
| Exchange differences – net | 877 | 7 | (66) | ||
| Finance costs | € (15,173) | € 7,261 | € 15,419 | € 11,282 | € 5,947 | 
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- Definition Fair value (gains)/losses on derivatives No definition available. 
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- Definition Finance costs on borrowings No definition available. 
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- Definition Interest accretion on provisions No definition available. 
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- Definition Interest expenses on lease liabilities No definition available. 
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- Definition Interest expenses on shareholder loans No definition available. 
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- Definition Net foreign exchange gain loss. No definition available. 
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- Definition Schedule of Finance cost No definition available. 
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- Definition The amount of costs associated with financing activities of the entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition The amount of interest expense on debt instruments issued. [Refer: Interest expense; Debt instruments issued] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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