Post-effective amendment to a registration statement that is not immediately effective upon filing

Taxation - Additional Information (Detail)

v3.22.2.2
Taxation - Additional Information (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 21, 2021
Dec. 31, 2021
Dec. 31, 2020
Income Tax [Line Items]      
Unused tax losses as a percentage of taxable income 50.00%    
Unused tax losses carryback period 1 year    
Taxable income minimum limit beyond which tax shall be paid at a higher rate   € 395 € 245
Corporate income tax rate minimum   15.00%  
Unused tax losses   € 132,498 € 116,405
Bottom of range [member]      
Income Tax [Line Items]      
Corporate income tax rate on the income above a certain threshold limit   25.00%  
Top of range [member]      
Income Tax [Line Items]      
Corporate income tax rate on the income above a certain threshold limit     25.80%
Year Two Thousand And Twenty Five [Member]      
Income Tax [Line Items]      
Unused tax losses   € 132,498 € 44,246
Year Two Thousand And Twenty Six [Member]      
Income Tax [Line Items]      
Unused tax losses     30,208
Year Two Thousand And Twenty Seven [Member]      
Income Tax [Line Items]      
Unused tax losses     19,269
Indefinitely [Member]      
Income Tax [Line Items]      
Unused tax losses     € 22,682