Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Other financial assets - Additional Information (Detail)

v3.22.1
Other financial assets - Additional Information (Detail) - EUR (€)
€ in Thousands
 1 Months Ended 12 Months Ended
Sep. 28, 2021
Jul. 28, 2021
Mar. 26, 2021
Dec. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
May 13, 2019
Schedule Of Assets Pledged As Security [Line Items]                
Non current payables of interest and commitment fee         € 17,257 € 14,694    
Non-current trade payables         430 430    
Pledged Bank balance for security         € 1,200 1,200    
Percentage of voting equity interests acquired         100.00%      
Share premium contribution         € 61,888 36,947   € 6,089
Interest expense         386      
Gains on change in fair value of derivatives         593      
Losses on change in fair value of derivatives           208 € 75  
Credit derivative, fair value         695 102    
Payment for purchase of share capital     € 60,000          
The Target Company [Member]                
Schedule Of Assets Pledged As Security [Line Items]                
Consideration paid (received)     1,500          
Consideration transferred     30,300   3,200 0    
Option Agreement ,Maturity Date Feb. 28, 2022              
Gain loss on fair value of options         1,700      
Third Party Company [Member]                
Schedule Of Assets Pledged As Security [Line Items]                
Consideration transferred     € 100          
Mega E [Member]                
Schedule Of Assets Pledged As Security [Line Items]                
Percentage of voting equity interests acquired   100.00%            
Consideration paid (received)   € 0   € 0        
Consideration transferred         27,200 0    
Gain loss on fair value of options   26,000     1,200      
Share premium contribution   0     0      
Payment for purchase of call options   € 9,456            
Two Option Agreement [Member] | The Target Company [Member]                
Schedule Of Assets Pledged As Security [Line Items]                
Percentage of voting equity interests acquired     8.50%          
Percentage of remaining share capital acquired upon exercising its option rights     49.50%          
Two Option Agreement [Member] | Third Party Company [Member]                
Schedule Of Assets Pledged As Security [Line Items]                
Percentage of voting equity interests acquired     100.00%          
Two Option Agreement [Member] | Top of range [member] | The Target Company [Member]                
Schedule Of Assets Pledged As Security [Line Items]                
Percentage of voting equity interests acquired     42.00%          
Later than three months [member]                
Schedule Of Assets Pledged As Security [Line Items]                
Payment of interest and commitment fees         2,563      
Later than one year [member]                
Schedule Of Assets Pledged As Security [Line Items]                
Non current pledged bank balance         18,887 € 16,324    
Later than three months and not later than one year [member]                
Schedule Of Assets Pledged As Security [Line Items]                
Non current pledged bank balance         € 0