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

Reserves - Summary of Reserves (Detail)

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Reserves - Summary of Reserves (Detail) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of reserves within equity [line items]      
Beginning balance € (6,860) € 4,195 € 3,823
Exchange differences on translation of foreign operations (65) 98 (14)
Changes in the fair value of equity investments at fair value through other comprehensive income (14,832) (10,595) 0
Deferred tax on changes in the fair value of equity investments at fair value through other comprehensive income 461 328  
Reclassification (1,845) (886) 386
Ending balance (23,141) (6,860) 4,195
Legal reserve for capitalized development costs      
Disclosure of reserves within equity [line items]      
Beginning balance 3,312 4,198 3,812
Reclassification (1,845) (886) 386
Ending balance 1,467 3,312 4,198
Foreign currency translation reserve      
Disclosure of reserves within equity [line items]      
Beginning balance 95 (3) 11
Exchange differences on translation of foreign operations (65) 98 (14)
Reclassification 0 0 0
Ending balance 30 95 (3)
Reserve for financial assets at FVOCI      
Disclosure of reserves within equity [line items]      
Beginning balance (10,267) 0 0
Changes in the fair value of equity investments at fair value through other comprehensive income (14,832) (10,595)  
Deferred tax on changes in the fair value of equity investments at fair value through other comprehensive income 461 328  
Ending balance € (24,638) € (10,267) € 0