XML 215 R202.htm IDEA: XBRL DOCUMENT v3.23.1
Earnings/(loss) per share - Summary of Basic and Diluted Earnings (Losses) per Share (Detail) - € / shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Earnings per share [abstract]      
Weighted average number of ordinary shares 54,899,456 54,853,045 54,853,045
Basic earnings/(loss) per share € (0.01) € 0.07 € (0.45)
Diluted earnings/(loss) per share € (0.01) € 0.07 € (0.45)