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Events after the Reporting Period - Additional Information (Detail) - € / shares
 1 Months Ended 3 Months Ended
Jan. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Jun. 30, 2023
Dec. 31, 2022
Disclosure of non-adjusting events after reporting period [line items]          
Par value per share     € 3.05 € 2.58 € 5.32
Issued capital shares     50,352   45,769
Events After The Reporting Period [Member]          
Disclosure of non-adjusting events after reporting period [line items]          
Number of options converted into shares   454,865      
Number of warrants converted into shares 387        
Class A Ordinary Shares [Member] | Events After The Reporting Period [Member]          
Disclosure of non-adjusting events after reporting period [line items]          
Number of warrants converted to ordinary shares 387 454,865      
Par value per share € 0.12 € 0.12      
Issued capital shares 46.44 55,000